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1. Belowground Herbivory to Sweetpotato by Sweetpotato Weevil (Coleoptera: Brentidae) Alters Population Dynamics and Probing Behavior of Aboveground Herbivores

Author:
J. Chen; X. Chen; M. J. Stout; J. A. Davis
Source:
Journal of economic entomology 2022 v.115 no.4 pp. 1069-1075
ISSN:
0022-0493
Subject:
Aphis gossypii; Cylas formicarius elegantulus; Ipomoea batatas; Myzus persicae; Pseudoplusia includens; entomology; epidemiology; herbivores; ingestion; pest management; phloem; population dynamics; sap; summer; sweet potatoes; viruses; weight gain
Abstract:
... Aboveground and belowground herbivory can alter host quality and trophic interactions. However, little research has explored the impacts of belowground herbivory on plant virus epidemiology. To understand this interaction in sweetpotato, Ipomoea batatas L. (Lam), we studied the impact of herbivory by sweetpotato weevil, Cylas formicarius elegantulus (Summers), to storage roots on vector herbivore, ...
DOI:
10.1093/jee/toac098

2. Characterization, identification and virulence of Metarhizium species from Cuba to control the sweet potato weevil, Cylas formicarius Fabricius (Coleoptera: Brentidae)

Author:
Yamilé Baró; Christina Schuster; Yohana Gato; María Elena Márquez; Andreas Leclerque
Source:
Journal of applied microbiology 2022 v.132 no.5 pp. 3705-3716
ISSN:
1364-5072
Subject:
Cylas formicarius elegantulus; Lepidoptera; Metarhizium anisopliae; Metarhizium robertsii; biological control; conidia; economic feasibility; fungi; genes; integrated pest management; virulence; Cuba
Abstract:
... AIMS: Entomopathogenic Metarhizium fungi are widely recognized for their biological control potential. In Cuba, several fungus‐based bio‐insecticides have been developed and are produced as part of integrated pest management (IPM) programmes for economically relevant agricultural pests. Screening of fungal isolates from the INISAV strain collection was used for the development of bio‐insecticides ...
DOI:
10.1111/jam.15460

3. Eradication of sweetpotato weevil, Cylas formicarius, from Tsuken Island, Okinawa, Japan, under transient invasion of males

Author:
Yusuke Ikegawa; Futoshi Kawamura; Yasutsune Sadoyama; Kunio Kinjo; Dai Haraguchi; Atsushi Honma; Chihiro Himuro; Takashi Matsuyama
Source:
Journal of applied entomology 2022 v.146 no.7 pp. 850-859
ISSN:
0931-2048
Subject:
Curculionidae; Cylas formicarius elegantulus; Ryukyu Archipelago; entomology; host plants; males; sterile insect technique; surveys; sweet potatoes
Abstract:
... An eradication project against the sweetpotato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), one of the most important pests of sweet potato in the world, was initiated in Oct. 2007 on Tsuken Island, Okinawa Prefecture, Japan. The sterile insect technique (SIT) and male annihilation technique (MAT) were employed as the main control measures to suppress and ultimately eradicate wil ...
DOI:
10.1111/jen.13004

4. Identification of miRNAs in Response to Sweet Potato Weevil (Cylas formicarius) Infection by sRNA Sequencing

Author:
Jian Lei; Yuqin Mei; Xiaojie Jin; Yi Liu; Lianjun Wang; Shasha Chai; Xianliang Cheng; Xinsun Yang
Source:
Genes 2022 v.13 no.6 pp. -
ISSN:
2073-4425
Subject:
Cylas formicarius elegantulus; adults; cultivars; industry; insect resistance; microRNA; pests; sweet potatoes; transcriptome; China
Abstract:
... The sweet potato weevil (Cylas formicarius) is an important pest in the growing and storage of sweet potatoes. It is a common pest in the sweet potato production areas of southern China, causing serious harm to the development of the sweet potato industry. For the existing cultivars in China and abroad, there is no sweet potato variety with complete resistance to the sweet potato weevil. Thus, und ...
DOI:
10.3390/genes13060981

5. Impact of Host Plant Resistance on Emergence, Body Parameters, and Supercooling Point of Cylas formicarius elegantulus (Coleoptera: Brentidae)

Author:
Nupur Sarkar; Mark J. Murray; Michael J. Stout; Jeffrey A. Davis
Source:
Florida entomologist 2022 v.105 no.1 pp. 65-70
ISSN:
1938-5102
Subject:
Cylas formicarius elegantulus; antixenosis; body length; cold; cultivars; entomologists; females; host plants; insects; males; oviposition; storage pests; summer; sweet potatoes; terpenoids; Florida
Abstract:
... Sweetpotato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Brentidae), an in-field and storage pest of sweetpotato, is the primary insect constraint to sweetpotato production in tropical and subtropical regions. Feeding by adult and larval sweetpotato weevil induces terpenes, rendering storage roots unmarketable. To reduce storage root damage and sweetpotato weevil populations, the p ...
DOI:
10.1653/024.105.0110

6. Integrasi komponen pengendalian hama penggerek ubi jalar (Cylas formicarius Fab.) (Coleoptera: Curculionidae)

Author:
Yusmani Prayogo; Nurul Setyanignsih; Didik Hariyono; Nur Edy Suminarti
Source:
Jurnal Entomologi Indonesia 2022 v.19 no.1 pp. 42-54
ISSN:
2089-0257
Subject:
Beauveria bassiana; Curculionidae; Cylas formicarius elegantulus; Entisols; dry season; entomopathogenic fungi; farmers; insecticides; organic fertilizers; plastic film mulches; sweet potatoes; Indonesia
Abstract:
... Pest control component integration of sweetpotato weevil (Cylas formicarius Fab.) (Coleoptera: Curculionidae). Sweetpotato weevil Cylas formicarius Fabricius is major obstacle in increasing of sweet potato production in various countries. Tuber damage due to C. formicarius causes yield loss up to 80%. This study aims to examine the integration control of C. formicarius in entisol, each control com ...
DOI:
https://doi.org/10.5994/jei.19.1.42

7. The female Euscepes postfasciatus refractory period is induced by the male but length is determined by the female

Author:
Chihiro Himuro; Atsushi Honma; Yusuke Ikegawa; Norikuni Kumano
Source:
Journal of insect physiology 2022 pp. 104427
ISSN:
0022-1910
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; body size; ejaculation; females; insect physiology; males; polyandry; variance
Abstract:
... Females of many animals mate multiple times during their lives (i.e., polyandry). The period between matings (mating interval) is called the refractory period (RP). In the West Indian sweet potato weevil (Euscepes postfasciatus), males use the ejaculate to induce the RP in females to prevent re-mating. By measuring the RP, a large variation of 1–49 days was observed. This variation may be due to t ...
DOI:
10.1016/j.jinsphys.2022.104427

8. Effects of hydroxycinnamic acid esters on sweetpotato weevil feeding and oviposition and interactions with Bacillus thuringiensis proteins

Author:
Milton O. Anyanga; Dudley I. Farman; Gorrettie N. Ssemakula; Robert O. M. Mwanga; Philip C. Stevenson
Source:
Journal of pest science 2021 v.94 no.3 pp. 783-794
ISSN:
1612-4758
Subject:
Bacillus thuringiensis; Curculionidae; Cylas formicarius elegantulus; antifeedants; cortex; coumaric acids; genetic transformation; host plants; larvae; mortality; oviposition; pest control; pests; sweet potatoes; toxicity
Abstract:
... Sweetpotato weevil (SPW) pest management is challenging because the pest target is sub-terranean, so the application of pesticides is impractical and usually ineffective. Host plant resistance and the genetic transformation of sweetpotatoes to produce entomotoxic Bt proteins offer potential for environmentally benign pest control. Resistance can be conferred by naturally occurring hydroxycinnamic ...
DOI:
10.1007/s10340-020-01297-5

9. Evaluation of 12 Sweetpotato Clones in Coastal South Carolina for Yield and Insect Resistance Using Organic and Conventional Cultural Practices

Author:
Phillip A. Wadl; Livy H. Williams; Matthew I. Horry; Brian K. Ward
Source:
HortTechnology 2022 v.32 no.3 pp. 253-262
ISSN:
1943-7714
Subject:
Cylas formicarius elegantulus; Diabrotica; Elateridae; Ipomoea batatas; Systena; cultivars; insect resistance; insects; organic production; plastic film mulches; sweet potatoes; South Carolina
Abstract:
... The yield and insect resistance of 12 sweetpotato (Ipomoea batatas) clones grown in two different production systems (organic black plastic mulch and conventional bare ground) were evaluated in 2016 and 2017 in coastal South Carolina. Significant differences in total storage root yield, marketable storage root yield, U.S. No. 1 storage root yield, and percent of U.S. No. 1 storage roots in all tri ...
DOI:
10.21273/HORTTECH04979-21

10. Functional characteristic analysis of three odorant‐binding proteins from the sweet potato weevil (Cylas formicarius) in the perception of sex pheromones and host plant volatiles

Author:
Jinfeng Hua; Chao Pan; Yongmei Huang; Yanqing Li; Huifeng Li; Cuirong Wu; Tianyuan Chen; Daifu Ma; Zongyun Li
Source:
Pest management science 2021 v.77 no.1 pp. 300-312
ISSN:
1526-498X
Subject:
Cylas formicarius elegantulus; RNA interference; adults; females; fluorescence; gene expression; host plants; ligands; lymph; males; olfactory receptors; pest management; pests; phylogeny; reverse transcriptase polymerase chain reaction; sex pheromones; sweet potatoes
Abstract:
... BACKGROUND: The sweet potato weevil, Cylas formicarius, is the most serious pest of sweet potato worldwide. The molecular mechanism of sex pheromone recognition in C. formicarius has not been reported. Odorant‐binding proteins (OBPs) play a critical role in selectively binding and transporting pheromones or other odors to the surface of olfactory receptor neurons through the aqueous sensillar lymp ...
DOI:
10.1002/ps.6019

11. The Fungus Metarhizium sp. BCC 4849 Is an Effective and Safe Mycoinsecticide for the Management of Spider Mites and Other Insect Pests

Author:
Rudsamee Wasuwan; Natnapha Phosrithong; Boonhiang Promdonkoy; Duangjai Sangsrakru; Chutima Sonthirod; Sithichoke Tangphatsornruang; Somsak Likhitrattanapisal; Supawadee Ingsriswang; Chettida Srisuksam; Kewarin Klamchao; Malinee Suksangpanomrung; Thipmanee Hleepongpanich; Sareeya Reungpatthanaphong; Morakot Tanticharoen; Alongkorn Amnuaykanjanasin
Source:
Insects 2021 v.13 no.1 pp. -
ISSN:
2075-4450
Subject:
Aphis craccivora; Aphis fabae; Bactrocera dorsalis; Cylas formicarius elegantulus; Eutetranychus; Metarhizium; Phenacoccus manihoti; Tetranychus; acaricides; adhesion; appressoria; bioassays; blastospores; conidia; fungi; genome; germination; greenhouses; hemp; homeostasis; hyphae; mortality; mycelium; shelf life; spiders; toxicology; viability; virulence
Abstract:
... Five isolates of Metarhizium sp. were evaluated for their pathogenicity against the spider mite (Tetranychus truncatus Ehara) (Acari: Tetranychidae) and Metarhizium sp. BCC 4849 resulted in the highest mortality (82%) on the 5th day post-inoculation (DPI). Subsequent insect bioassay data indicated similar high virulence against five other insects: African red mites (Eutetranychus africanus Tucker) ...
DOI:
10.3390/insects13010042

12. Genetic variation of two weevil pests of sweet potato, Cylas formicarius (Coleoptera: Brentidae) and Euscepes postfasciatus (Coleoptera: Curculionidae), in Japan based on mitochondrial DNA

Author:
Hiraku Yoshitake; Makoto Arimoto; Norihide Hinomoto; Chi-Feng Lee; Sheng-Shan Lu; Sheryl A. Yap; Analyn A. Cabras
Source:
Applied entomology and zoology 2021 v.56 no.4 pp. 483-496
ISSN:
0003-6862
Subject:
Cylas formicarius elegantulus; DNA barcoding; Euscepes postfasciatus; Japan; entomology; genes; genetic variation; haplotypes; mitochondrial DNA; phylogeny; statistical analysis; sweet potatoes; Fiji; Samoa; Tonga
Abstract:
... We examined the genetic variation in the sequences of cytochrome c oxidase subunit I gene (DNA barcode region) and some other regions of mitochondrial DNA of sweet potato weevil, Cylas formicarius (Fabricius, 1798) (Coleoptera: Brentidae), and West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire, 1849) (Coleoptera: Curculionidae), in Japan. In the DNA barcode region of C. formicarius ...
DOI:
10.1007/s13355-021-00755-5

13. Laboratory and Greenhouse Evaluation of Melia volkensii Extracts for Potency against African Sweet Potato Weevil, Cylas puncticollis, and Fall Armyworm, Spodoptera frugiperda

Author:
Victor Jaoko; Clauvis Nji Tizi Taning; Simon Backx; Pierfrancesco Motti; Jackson Mulatya; Jan Vandenabeele; Titus Magomere; Florence Olubayo; Sven Mangelinckx; Stefaan P. O. Werbrouck; Guy Smagghe
Source:
Agronomy 2021 v.11 no.10 pp. -
ISSN:
2073-4395
Subject:
Cylas formicarius elegantulus; Melia; Spodoptera frugiperda; agronomy; antifeeding activity; bark; corn; greenhouse experimentation; greenhouses; insect control; leaves; pulp; sweet potatoes
Abstract:
... The African sweet potato weevil, Cylas puncticollis, and fall armyworm, Spodoptera frugiperda, are insect pests of economic importance that have a negative impact on sweet potato and maize production, respectively. In this study, we aimed to evaluate the potential of Melia volkensii extracts to protect sweet potato and maize plants against damage by both insect pests. We evaluated extracts from th ...
DOI:
10.3390/agronomy11101994

14. Male body size does not affect the refractory period of females in the West Indian sweet potato weevil Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae) and the seed bug Togo hemipterus (Scott) (Heteroptera: Lygaeidae)

Author:
Chihiro Himuro; Atsushi Honma; Yusuke Ikegawa; Tsuyoshi Ohishi; Takahisa Miyatake
Source:
Journal of ethology 2021 v.39 no.1 pp. 39-46
ISSN:
0289-0771
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; Lygaeidae; Togo hemipterus; animal behavior; body size; females; males; risk; risk reduction; sexual selection; sperm competition; variance
Abstract:
... Multiple mating by females increases both the risk and intensity of sperm competition for males. The ability to temporarily or permanently inhibit female receptivity to further mating represents a highly adaptive strategy to reduce the risk of sperm competition. Males of the West Indian sweet potato weevil Euscepes postfasciatus (Fairmaire) (Coleoptera: Curculionidae) and the seed bug Togo hemipte ...
DOI:
10.1007/s10164-020-00669-9

15. Breeding farmer and consumer preferred sweetpotatoes using accelerated breeding scheme and mother–baby trials

Author:
Ernest Baafi; Mavis Akom; Adelaide Agyeman; Cynthia Darko; Ted Carey
Source:
Open Agriculture 2020 v.5 no.1 pp. 548-557
ISSN:
2391-9531
Subject:
Cylas formicarius elegantulus; agriculture; beta-carotene; dry matter content; early development; ecological zones; farmers; food security; income; iron; sweet potatoes; taste; viruses; zinc; Ghana
Abstract:
... Increased sweetpotato utilization has become an important breeding objective recently, with much emphasis on the development of non-sweet sweetpotatoes for income and food security in Ghana. The objective of this study was to evaluate 26 elite non-sweet and less sweet sweetpotato genotypes with regard to their release as commercial varieties using mother–baby trial. The 26 sweetpotato genotypes we ...
DOI:
10.1515/opag-2020-0055

16. Effects of Storage Periods of an Artificial Larval Diet on the Yield and Quality of Mass-Reared West Indian Sweet Potato Weevil (Coleoptera: Curculionidae)

Author:
Kinjo Misa; Chihiro Himuro; Atsushi Honma; Yusuke Ikegawa; Tsuyoshi Ohishi
Source:
Journal of economic entomology 2020 v.113 no.6 pp. 2613-2618
ISSN:
0022-0493
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; Japan; artificial diets; body size; entomology; females; larvae; males; mass rearing; pests; storage time; sweet potatoes
Abstract:
... Artificial diets have been employed for the mass-rearing of numerous insects because of their ease of use and standardized quality. An ability to store artificial diets under nonrefrigerated conditions over the long term could improve the efficacy of mass-rearing systems considerably. However, it remains largely unknown how long artificial diets can be stored at such temperatures without any adver ...
DOI:
10.1093/jee/toaa190

17. Effects of high CO2 on mating success, mating duration, and sperm transfer in the West Indian sweet potato weevil, Euscepes postfasciatus

Author:
Ayame Nunohiro; Norikuni Kumano
Source:
Entomologia experimentalis et applicata 2020 v.168 no.5 pp. 387-397
ISSN:
0013-8703
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; air; carbon dioxide; caves; copulation; environmental factors; females; habitats; insect nests; males; mass rearing; oxygen; reproductive success; social insects; soil; sperm competition; spermatozoa; walking; wood
Abstract:
... Most terrestrial animals live in natural atmospheric conditions, but some are also adapted to low oxygen (hypoxic) or high‐carbon dioxide (hypercapnic) conditions, such as in social insect nests, soil, caves, wood, and decaying material. Although it is possible that individuals adapt their behaviour to the environmental condition of their habitats, mating behaviour under ecologically possible rang ...
DOI:
10.1111/eea.12885

18. Evaluation of the selected sweet potato genotypes tolerance to sweet potato weevil (Cylas puncticollis Boheman)

Author:
L. A. Ochieng
Source:
Journal of horticultural science & biotechnology 2020 v.95 no.2 pp. 192-202
ISSN:
2380-4084
Subject:
Curculionidae; Cylas formicarius elegantulus; breeding programs; genotype; insect resistance; larvae; parents; pests; starch; sucrose; sweet potatoes; Sub-Saharan Africa
Abstract:
... Sweet potato weevil (Cylas punticollis Boheman) is a serious pest throughout sub-Saharan Africa. A study to evaluate 51 sweet potato genotypes for their tolerance to the weevil was conducted in a controlled experiment of no-choice arena. Genotype Tainung was the most susceptible to C. puncticollis. Genotypes Obugi and 5 Nyandere were the most tolerant to C. puncticollis. Many of the genotypes that ...
Handle:
10113/6880874
DOI:
10.1080/14620316.2019.1652118

19. Three chemosensory proteins from the sweet potato weevil, Cylas formicarius, are involved in the perception of host plant volatiles

Author:
Jinfeng Hua; Yujie Fu; Qiaoling Zhou; Yongmei Huang; Huifeng Li; Tianyuan Chen; Daifu Ma; Zongyun Li
Source:
Pest management science 2021 v.77 no.10 pp. 4497-4509
ISSN:
1526-498X
Subject:
Cylas formicarius elegantulus; RNA interference; benzaldehyde; chemical communication; cineole; fluorescence; host plants; olfactometers; oviposition; pests; phenylethyl alcohol; sweet potatoes; vanillin
Abstract:
... BACKGROUND: Chemosensory proteins (CSPs) play important roles in chemical communication, but their precise physiological functions are still unclear. Cylas formicarius is the most serious pest attacking sweet potato around the world. At present, there is no effective way to control this pest. RESULTS: Our results showed that CforCSP1, 5 and 6 genes were highly expressed in the antennae of both sex ...
DOI:
10.1002/ps.6484

20. Trade-off Investment between Tonic Immobility and Mate Search in the Sweetpotato Weevil, Cylas formicarius (Coleoptera: Brentidae)

Author:
Haoyong Ouyang; Pengxiang Wu; Runzhi Zhang; Muhammad Haseeb
Source:
Insects 2020 v.11 no.11 pp. -
ISSN:
2075-4450
Subject:
Cylas formicarius elegantulus; artificial selection; females; males; mating behavior; olfactometers; tonic immobility
Abstract:
... Tonic immobility (TI) is a well-known anti-predator strategy adopted by diverse preys. Numerous studies on the cost–benefit involve in TI have been reported. Although, some studies have reported the effect of mating behavior on TI, few studies highlight the phases of mate search. In the present study, we investigated the relationship between mate search and TI behavior in the sweetpotato weevil (S ...
DOI:
10.3390/insects11110774

21. Development and characterization of microsatellites from the sweetpotato weevil, Cylas formicarius elegantulus

Author:
Phillip A. Wadl; Robert N. Trigiano; Sarah L. Boggess; Karen Harris‐Shultz; Livy H. Williams; Grant T. McQuate
Source:
Journal of applied entomology 2020 v.144 no.4 pp. 335-340
ISSN:
0931-2048
Subject:
Cylas formicarius elegantulus; Hawaii; cluster analysis; databases; entomology; microsatellite repeats; population genetics; sweet potatoes; transcriptome; Georgia; South Carolina
Abstract:
... To conduct population genetics analyses on sweetpotato weevils (Cylas formicarius elegantulus) collected from three populations in the United States, microsatellite loci were developed from sweetpotato weevil transcriptome sequences obtained from a publicly available database. Nineteen of 27 microsatellite loci tested were usable for population analyses. Sweetpotato weevil individuals from Georgia ...
DOI:
10.1111/jen.12738

22. Farmer Reported Pest and Disease Impacts on Root, Tuber, and Banana Crops and Livelihoods in Rwanda and Burundi

Author:
Joshua Sikhu Okonya; Walter Ocimati; Anastase Nduwayezu; Déo Kantungeko; Nicolas Niko; Guy Blomme; James Peter Legg; Jürgen Kroschel
Source:
Sustainability 2019 v.11 no.6 pp. -
ISSN:
2071-1050
Subject:
Aleyrodidae; Cosmopolites sordidus; Cylas formicarius elegantulus; Phytophthora infestans; Tuber (Tuberaceae); Xanthomonas; bananas; cassava; crop losses; crop production; cutworms; farmers; food security; households; integrated pest management; interviews; livelihood; potatoes; profitability; sweet potatoes; tubers; viruses; Burundi; Rwanda
Abstract:
... Biotic constraints cause major crop losses and, hence, food insecurity in sub-Saharan Africa. This study documented the popularity, production constraints, pests and diseases, farmers’ perceptions on the severity of biotic constraints and the impact of related crop losses on household food security for the key root, tuber and banana (RTB) crops (cassava, potato, sweetpotato and banana). Farm ...
DOI:
10.3390/su11061592

23. Method for DNA Isolation From Sweetpotato Weevil (Coleoptera: Curculionidae) Collected in Pheromone-Baited Traps

Author:
Phillip A Wadl; Livy H Williams; Karen R Harris-Shultz; Grant T McQuate
Source:
Journal of economic entomology 2019 v.112 no.2 pp. 1001-1003
ISSN:
1938-291X
Subject:
Curculionidae; Cylas formicarius elegantulus; DNA; bait traps; ethanol; funnel traps; gel electrophoresis; males; molecular weight; pheromone traps; polymerase chain reaction; summer
Abstract:
... This study provides a protocol for the isolation of high-quality DNA from sweetpotato weevils (Cylas formicarius elegantulus (Summers)) collected from pheromone-baited aerial funnel traps. This study was based on our discovery that a 2-wk collection interval of sweetpotato weevils from pheromone traps did not permit isolation of intact high-quality genomic DNA. To test the effect of collection met ...
DOI:
10.1093/jee/toy390

24. Nuclease activity decreases the RNAi response in the sweetpotato weevil Cylas puncticollis

Author:
Katterinne Prentice; Guy Smagghe; Godelieve Gheysen; Olivier Christiaens
Source:
Insect biochemistry and molecular biology 2019 v.110 pp. 80-89
ISSN:
0965-1748
Subject:
Cylas formicarius elegantulus; RNA interference; crop production; digestive system; double-stranded RNA; enzyme activity; eukaryotic cells; gene expression; insects; messenger RNA; mortality; nucleases; pest control; pests; quantitative polymerase chain reaction; reporter genes; sweet potatoes; transcriptome; Sub-Saharan Africa
Abstract:
... RNA interference (RNAi) refers to the process of suppression of gene expression in eukaryotes, which has a great potential for the control of pest and diseases. Unfortunately, the efficacy of this technology is limited or at best variable in some insects. In the African sweet potato weevil (SPW) Cylas puncticollis, a devastating pest that affects the sweet potato production in Sub-Saharan Africa ( ...
DOI:
10.1016/j.ibmb.2019.04.001

25. Origins, Divergence, and Contrasting Invasion History of the Sweet Potato Weevil Pests Cylas formicarius (Coleoptera: Brentidae) and Euscepes batatae (Coleoptera: Curculionidae) in the Asia-Pacific

Author:
Dean R. Brookes; James P. Hereward; Gimme H. Walter; Michael J. Furlong
Source:
Journal of economic entomology 2019 v.112 no.6 pp. 2931-2939
ISSN:
0022-0493
Subject:
Cylas formicarius elegantulus; Euscepes; Ipomoea batatas; entomology; genetic variation; geographical distribution; mitochondria; population structure; probability; sweet potatoes; India; South America
Abstract:
... Cylas formicarius F. and Euscepes batatae Waterhouse are the most damaging sweet potato insect pests globally. Both weevils are thought to have invaded the Pacific alongside the movement of sweet potato (Ipomoea batatas (L.) Lam. Convolvulaceae), with C. formicarius having originated in India and E. batatae in Central or South America. Here we compare the genetic relationships between populations ...
DOI:
10.1093/jee/toz198

26. Reduced Emergence of Cylas formicarius elegantulus (Coleoptera: Curculionidae) from Sweet Potato Roots by Heterorhabditis indica

Author:
Roxana Y. Myers; Charmaine D. Sylva; Cathy L. Mello; Kirsten A. Snook
Source:
Journal of economic entomology 2020 v.113 no.3 pp. 1129-1133
ISSN:
0022-0493
Subject:
Curculionidae; Cylas formicarius elegantulus; Hawaii (island); Heterorhabditis indica; Ipomoea batatas; abnormal development; bitterness; entomology; exports; inoculum density; mortality; pests; quarantine; sweet potatoes
Abstract:
... Okinawan sweet potato, Ipomoea batatas, is an important food staple and export crop for the Island of Hawaii. Cylas formicarius elegantulus, sweet potato weevil, is a major quarantine pest that causes severe destruction to the crop. Root malformation and a bitter taste occur when larvae feed and tunnel within the storage root. Off-grade roots are often left in the field after harvest and serve as ...
DOI:
10.1093/jee/toaa054

27. Screening barrier plants to reduce crop attack by sweet potato weevil (Cylas formicarius)

Author:
Taiwo E Dada; Jian Liu; Anne C Johnson; Mudassir Rehman; Geoff M Gurr
Source:
Pest management science 2020 v.76 no.3 pp. 894-900
ISSN:
1526-498X
Subject:
Curculionidae; Cylas formicarius elegantulus; Ipomoea batatas; Zea mays subsp. mays; basil; chives; habitats; imagos; immigration; leaves; mint; olfactometers; oviposition; pest management; pests; plant damage; roots; screening; stems; sweet potatoes; sweetcorn
Abstract:
... BACKGROUND: Sweet potato weevil, Cylas formicarius (Fabricius) attacks stems and storage roots of sweet potato, Ipomoea batatas, and is a major pest of this globally significant crop. To minimize the immigration of weevils into sweet potato fields from nearby donor habitat, we assessed scope for a barrier plant approach. Here, we report a novel, two‐stage, multiple choice olfactometer method to sc ...
DOI:
10.1002/ps.5594

28. Sweetpotato Cultivar Trials on Hawai‘i Island

Author:
Susan C. Miyasaka; Marisa Wall; Don LaBonte; Alton Arakaki
Source:
HortTechnology 2019 v.29 no.6 pp. 967-975
ISSN:
1063-0198
Subject:
Cylas formicarius elegantulus; Ipomoea batatas; anthocyanins; cultivars; fructose; glucose; growth habit; landraces; maltose; soil; sucrose; sweet potatoes; Louisiana
Abstract:
... Twelve sweetpotato (Ipomoea batatas var. batatas) accessions/cultivars/landraces (entries) were evaluated for yield, resistance to pests, and quality in five field trials planted at Pepe`ekeo, Hawai‘i Island, and replicated over time with blocks planted on May and Oct. 2014, Feb. and July 2015, and Jan. 2016. Plots were harvested at 4.5 to 6 months after planting. In the first two field trials, lo ...
DOI:
10.21273/HORTTECH04387-19

29. The virulence improvement of Beauveria bassiana in infecting Cylas formicarius modulated by various chitin based compounds

Author:
triono bagus saputro; YUSMANI PRAYOGO; FARADIBA LAZUARDI ROHMAN; NUR HIDAYATUL ALAMI
Source:
Biodiversitas 2019 v.20 no.9 pp. -
ISSN:
2085-4722
Subject:
Bassiana; Beauveria bassiana; Cylas formicarius elegantulus; Ipomoea batatas; biological control agents; chitin; conidia; culture media; feeds; food production; insects; molluscs; mortality; pests; sweet potatoes; viability; virulence
Abstract:
... Saputro TB, Prayogo Y, Rohman FL, Alami NH. 2019. The virulence improvement of Beauveria bassiana in infecting Cylas formicarius modulated by various chitin based compounds. Biodiversitas 20: 2486-2493. Sweet potato (Ipomoea batatas L.) is one of alternative carbohydrate source with an important role in food production, animal feed industries, and as raw materials for other derivatives. However, s ...
DOI:
10.13057/biodiv/d200909

30. Agronomic Performance and Susceptibility of Seven Ghanaian Improved Sweet Potato Varieties to the Sweet Potato Weevil, Cylas spp. (Coleoptera: Brentidae) in Coastal Savanna Zone of Ghana

Author:
M. Adom; K.O. Fening; D.D. Wilson; K. Adofo; A.Y. Bruce
Source:
African entomology 2019 v.27 no.2 pp. 312-321
ISSN:
1021-3589
Subject:
Curculionidae; Cylas formicarius elegantulus; Ipomoea batatas; agroecology; agronomic traits; crop production; farmers; field experimentation; food crops; insect infestations; root crown; savannas; sweet potatoes; wet season; Ghana
Abstract:
... Sweet potato (Ipomoea batatas (L.) Lam. is an important food crop adaptable to a broad range of agro-ecological conditions. The knowledge of the performance of the available varieties under a specific ecological condition is important to improve the production. A field experiment was carried out at the University of Ghana farm during the major and minor rainy seasons of 2015 to determine the yield ...
DOI:
10.4001/003.027.0312

31. Appropriate number of inoculated eggs for mass-rearing the West Indian sweet potato weevil, Euscepes postfasciatus (Coleoptera: Curculionidae)

Author:
Chihiro Himuro; Norikuni Kumano; Atsushi Honma; Yusuke Ikegawa; Tsuyoshi Ohishi
Source:
Applied entomology and zoology 2018 v.53 no.1 pp. 157-164
ISSN:
0003-6862
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; adults; body size; eggs; females; mass rearing; progeny; sterile insect technique
Abstract:
... It is necessary to establish an economical mass-rearing system for the West Indian sweet potato weevil Euscepes postfasciatus (Fairmaire) so that large numbers can be created for use in the sterile insect technique (SIT) to control wild infestations. Both the quality of offspring and the number of adult weevils produced are important. As an adult female with a dry weight of less than 1.4 mg has an ...
DOI:
10.1007/s13355-017-0536-6

32. Behavioral Repertory of Adult Cylas formicarius (Fabricius) (Coleoptera: Brentidae)

Author:
Christopher K. Starr; David D. Wilson; Stanley J. Kays
Source:
Coleopterists' bulletin 2018 v.72 no.1 pp. 85-92
ISSN:
0010-065X
Subject:
Cylas formicarius elegantulus; adults; females; grooming (animal behavior); males; sexual dimorphism
Abstract:
... Adult female and male sweetpotato weevils, Cylas formicarius (Fabricius), have repertories of at least 19 and 21 behavior patterns, respectively. These are described and named, including eight self-grooming patterns. Consistent with the species' slight sexual dimorphism, few behavior patterns are peculiar to one sex. The sequence of self-grooming movements is analyzed for each sex. Comparative ass ...
DOI:
10.1649/0010-065X-72.1.85

33. Effects of X-ray irradiation on male sperm transfer ability and fertility in the sweetpotato weevils Euscepes postfasciatus (Coleoptera: Curculionidae) and Cylas formicarius (Coleoptera: Brentidae)

Author:
Norikuni Kumano; Dai Haraguchi; Kaori Tsurui-Sato
Source:
Applied entomology and zoology 2018 v.53 no.4 pp. 485-492
ISSN:
0003-6862
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; X-radiation; gamma radiation; insect pests; irradiation; male sterility; males; physical properties; spermatozoa; sterile insect technique; Ryukyu Archipelago
Abstract:
... Gamma radiation from isotopic sources has been used in sterile insect technique (SIT) programs worldwide, but it might be difficult to continue using these sources in future SIT programs because of social issues. Therefore, an alternative sterilization source to gamma rays, such as X-rays, needs to be developed. The physical properties of radiation are different between gamma rays and X-rays: for ...
DOI:
10.1007/s13355-018-0578-4

34. Efficacy of Three Plant Powders in the Control of Cylas puncticollis (Boheman) (Coleoptera: Curculionidae) on Sweet Potato During Storage

Author:
A.I. Nta; S.I. Okweche; S.B. Umoetok
Source:
African entomology 2018 v.26 no.1 pp. 141-149
ISSN:
1021-3589
Subject:
Aframomum melegueta; Curculionidae; Cylas formicarius elegantulus; Dennettia tripetala; Xylopia aethiopica; adults; alkaloids; bioassays; carotenoids; flavonoids; fruits; leaves; mortality; pests; phenols; phytopharmaceuticals; powders; quantitative analysis; saponins; steroids; sweet potatoes; tannins; tubers; Nigeria
Abstract:
... Biological assays were carried out to determine the effectiveness of powders of three locally available plants, Dennettia tripetala (G. Backer), Xylopia aethiopica (A. Rich) and Aframomum melegueta (K. Schum), for the control of Cylas puncticollis a sweet potato weevil. Powders of the leaves and fruits of each plant were separately applied at concentrations of 1, 3 and 5% (w/w for powders) for bio ...
DOI:
10.4001/003.026.0141

35. Host preference of sweetpotato weevil, Cylas formicarius elegantulus (Summers): an example of Hopkins’ host-selection principle

Author:
Jie Chen; Michael J. Stout; Julien Beuzelin; Tara P. Smith; Don LaBonte; Jeff M. Murray; Jeffrey A. Davis
Source:
Arthropod-plant interactions 2019 v.13 no.5 pp. 779-786
ISSN:
1872-8855
Subject:
Cylas formicarius elegantulus; Ipomoea batatas; adults; cultivars; females; growers; host preferences; insect pests; insect resistance; larvae; oviposition; phytophagous insects; rearing; roots; summer; sweet potatoes
Abstract:
... Sweetpotato weevil (SPW), Cylas formicarius elegantulus (Summers), is the most damaging root-feeding insect of sweetpotato, Ipomoea batatas (L.) Poir., worldwide. Larval feeding on storage roots reduces yield and induces terpene production, rendering roots inedible. Selection of sweetpotato cultivars with resistance to insect pests has been carried out for over a century but no high yielding, prod ...
DOI:
10.1007/s11829-019-09704-0

36. A New System for Detecting Initial Colonization by Invasive Pests and Their Locations

Author:
Yusuke Ikegawa; Atsushi Honma; Chihiro Himuro; Takashi Matsuyama
Source:
Journal of economic entomology 2019 v.112 no.6 pp. 2976-2983
ISSN:
0022-0493
Subject:
Curculionidae; Cylas formicarius elegantulus; Ryukyu Archipelago; entomology; host plants; monitoring; pests; quarantine; sex pheromones
Abstract:
... Quarantine pests in plants can be a serious agricultural problem; many eradication programs using area-wide control measures have been implemented worldwide to combat this threat. Surveillance measures using sex pheromone (in general, male-attractant) traps are also widely implemented for rapid control and eradication of invasive pests. If initial pest colonization can be determined based on tempo ...
DOI:
10.1093/jee/toz228

37. A sex pheromone‐baited trapping system for management of sweetpotato weevil, Cylas formicarius (Coleoptera: Brentidae)

Author:
Masilamany Dilipkumar; Shari Erwan‐Shah; Abdullah Anuar; Annamalai Sivapragasam
Source:
Journal of applied entomology 2019 v.143 no.4 pp. 408-416
ISSN:
0931-2048
Subject:
Curculionidae; Cylas formicarius elegantulus; bait traps; canopy; color; cost effectiveness; crop damage; detergents; growers; leaves; males; monitoring; pheromone traps; polyethylene terephthalates; sex pheromones; sweet potatoes; trapping; Malaysia
Abstract:
... A potent male attractant of sweetpotato weevil helps in monitoring and control of sweetpotato weevil in many production areas around the world. At present, it has not been used in Malaysia. Cost of the components of a trapping system is a major constraint in the adoption of male lure‐baited trapping by growers in Malaysia. Seven field trapping experiments were conducted from February 2013 to Novem ...
DOI:
10.1111/jen.12602

38. Effects of Irradiation Dose on Sperm Production, Insemination, and Male Mating Possible Period in the Sweetpotato Weevil (Coleoptera: Brentidae)

Author:
Satoshi Hiroyoshi; Takayuki Mistunaga; Tsuguo Kohama; Gadi V P Reddy
Source:
Journal of economic entomology 2018 v.111 no.3 pp. 1151-1156
ISSN:
1938-291X
Subject:
Curculionidae; Cylas formicarius elegantulus; adults; insect pests; insemination; irradiation; males; spermatozoa; spermiogenesis; sterile insect technique; survival rate; sweet potatoes
Abstract:
... The sterile insect technique (SIT) has been used for the control or eradication of target insect pests. To successfully apply SIT, it is very important to clarify the effect of irradiation on male reproduction in the target pest, because their mating and spermiogenesis abilities affect the success of eradication program. The sweetpotato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae) ...
DOI:
10.1093/jee/tox363

39. Genotype Stability Index for Root Yield and Tolerance to Sweetpotato Weevil Cylas puncticolis: A Tool for Identifying Climate Smart Varieties

Author:
A. Chalwe; M. Chiona; S. Sichilima; J. Njovu; C. Chama; D. Ndhlovu
Source:
Open Agriculture 2017 v.2 no.1 pp. 166-174
ISSN:
2391-9531
Subject:
Curculionidae; Cylas formicarius elegantulus; analysis of variance; climate; environmental factors; genotype; pests; rain; selection index; sweet potatoes; temperature
Abstract:
... Despite the ability of sweetpotato to grow in marginal areas, large differential genotypic responses have been reported under varying environmental conditions. Differences in pest and disease pressure contribute significantly to inconsistencies in performance of genotypes in various environments. Using a randomized complete block design, eight sweetpotato genotypes were evaluated in one location s ...
DOI:
10.1515/opag-2017-0017

40. Identification of simple sequence repeat markers for sweetpotato weevil resistance

Author:
Benard Yada; Agnes Alajo; Gorrettie N. Ssemakula; Gina Brown-Guedira; Milton Anyanga Otema; Philip C. Stevenson; Robert O. M. Mwanga; G. Craig Yencho
Source:
Euphytica 2017 v.213 no.6 pp. 129
ISSN:
0014-2336
Subject:
Curculionidae; Cylas formicarius elegantulus; Ipomoea batatas; coumaric acids; cultivars; esters; genotype; genotyping; germplasm; heritability; landraces; loci; microsatellite repeats; plant breeding; progeny; sweet potatoes; transgressive segregation
Abstract:
... The development of sweetpotato [Ipomoea batatas (L.) Lam] germplasm with resistance to sweetpotato weevil (SPW) requires an understanding of the biochemical and genetic mechanisms of resistance to optimize crop resistance. The African sweetpotato landrace, ‘New Kawogo’, was reported to be moderately resistant to two species of SPW, Cylas puncticollis and Cylas brunneus. Resistance has been associa ...
DOI:
10.1007/s10681-017-1917-1

41. Modeling the impact of sweetpotato weevils on storage root yield

Author:
Daniel A. Akansake; Putri E. Abidin; E. E. Carey
Source:
Open Agriculture 2018 v.3 no.1 pp. 319-325
ISSN:
2391-9531
Subject:
Curculionidae; Cylas formicarius elegantulus; Diplopoda; Ipomoea batatas; attainable yield; crop yield; genotype; linear models; regression analysis; roots; sweet potatoes; Ghana
Abstract:
... This study estimated the amount of loss in storage roots caused by various levels of damage caused by sweetpotato weevils (Cylas spp). Seven varieties of sweetpotato (Ipomoea batatas L. (Lam)) were evaluated in three production sites in northern Ghana for two years (2014 and 2015). Yield data for each experimental plot were collected. A regression analysis was carried out using the generalized lin ...
DOI:
10.1515/opag-2018-0035

42. Preliminary observations on use of Beauveria bassiana for the control of the sweet potato weevil (Cylas sp.) in South Africa

Author:
Igenicious Hlerema; Sunette Laurie; Bahlebi Eiasu
Source:
Open Agriculture 2017 v.2 no.1 pp. 595-599
ISSN:
2391-9531
Subject:
Beauveria bassiana; Cylas formicarius elegantulus; Hyphomycetes; control methods; cultivars; dipping; experimental design; insects; leaves; pest management; pests; planting; roots; spraying; sweet potatoes; South Africa
Abstract:
... Sweet potato weevils (Cylas puncticollis and C. formicarius) are notorious pests of sweet potato and cause severe losses in marketable yield. The study tested the use of Beauveria bassiana ((Balsamo) Vuillemin) (Deuteromycota: Hyphomycetes) for controlling sweet potato weevils. An experiment was conducted using four treatments: 1) dipping sweet potato cuttings in solution of 1 g/litre B. bassiana ...
DOI:
10.1515/opag-2017-0063

43. RNAi‐based gene silencing through dsRNA injection or ingestion against the African sweet potato weevil Cylas puncticollis (Coleoptera: Brentidae)

Author:
Katterinne Prentice; Olivier Christiaens; Ine Pertry; Ana Bailey; Chuck Niblett; Marc Ghislain; Godelieve Gheysen; Guy Smagghe
Source:
Pest management science 2017 v.73 no.1 pp. 44-52
ISSN:
1526-498X
Subject:
Cylas formicarius elegantulus; Diabrotica virgifera virgifera; RNA interference; digestive system; double-stranded RNA; essential genes; ingestion; insecticidal properties; nucleases; pest control; pests; plant protection; toxicity; Sub-Saharan Africa
Abstract:
... BACKGROUND: RNA interference (RNAi) technology can potentially serve as a suitable strategy to control the African sweet potato weevil Cylas puncticollis (SPW), which is a critical pest in sub‐Saharan Africa. Important prerequisites are required to use RNAi in pest control, such as the presence of an efficient RNAi response and the identification of suitable target genes. RESULTS: Here we evaluate ...
DOI:
10.1002/ps.4337

44. Soil insect crop pests and their integrated management in East Africa: A review

Author:
I. Nyamwasa; K. Li; A. Rutikanga; D.N.T. Rukazambuga; S. Zhang; J. Yin; C. Ya-zhong; X.X. Zhang; X. Sun
Source:
Crop protection 2018 v.106 pp. 163-176
ISSN:
0261-2194
Subject:
Agrotis segetum; Apoininae; Cosmopolites sordidus; Cylas formicarius elegantulus; Ophiomyia phaseoli; Scarabaeidae; Termitidae; beans; crops; cutworms; insect biology; insect larvae; insecticides; integrated pest management; monitoring; plant pests; soil insects; Eastern Africa
Abstract:
... Soil-dwelling pests are generally poorly documented in East Africa due to their cryptic nature, which complicates monitoring, so the aim of this review is to compile and elucidate the current soil insect pest and management situation in this region. Fifty-five (55) soil insect pests are reported from across East Africa, and twenty (36%) and seventeen (30%) species of Scarabaeidae and Termitidae, r ...
DOI:
10.1016/j.cropro.2017.11.017

45. Sweetpotato weevil, Cylas formicarius (Fab.) (Coleoptera: Brentidae) avoids its host plant when a virulent Metarhizium anisopliae isolate is present

Author:
Ronnie Dotaona; Bree A.L. Wilson; Gavin J. Ash; Joanne Holloway; Mark M. Stevens
Source:
Journal of invertebrate pathology 2017 v.148 pp. 67-72
ISSN:
0022-2011
Subject:
Curculionidae; Cylas formicarius elegantulus; Metarhizium anisopliae; adults; agar; females; host plants; insects; males; olfactometers; roots; smell; sweet potatoes; virulence; virulent strains
Abstract:
... Metarhizium anisopliae has a wide range of coleopteran hosts, including weevils. Some susceptible insects are known to modify their behavior to prevent infection, typically detecting virulent strains by olfaction, and avoiding physical contact with sources of infection. Laboratory olfactometer assays were conducted on the sweetpotato weevil Cylas formicarius to test the hypothesis that insects wou ...
DOI:
10.1016/j.jip.2017.05.010

46. Chronic effects and horizontal transmission of Metarhizium anisopliae strain QS155 infection in the sweet potato weevil, Cylas formicarius (Coleoptera: Brentidae)

Author:
Ronnie Dotaona; Bree A.L. Wilson; Mark M. Stevens; Joanne Holloway; Gavin J. Ash
Source:
Biological control 2017 v.114 pp. 24-29
ISSN:
1049-9644
Subject:
Curculionidae; Cylas formicarius elegantulus; Metarhizium anisopliae; adults; conidia; eggs; fecundity; females; host plants; long term effects; males; maternal exposure; mortality; pests; plant tissues; reproductive success; sweet potatoes; Papua New Guinea
Abstract:
... Cylas formicarius is a major pest of sweetpotato in Papua New Guinea. In this study, the chronic effects of infection with Metarhizium anisopliae strain QS155 in adult C. formicarius were investigated. Female fecundity was significantly reduced in treatments where females were infected directly and maintained in pairs with either infected or uninfected males, and to a statistically equivalent leve ...
DOI:
10.1016/j.biocontrol.2017.07.008

47. Reduced dispersal and survival in the sweet potato weevil (Euscepes postfasciatus) after irradiation

Author:
Katsuya Ichinose; Keiji Yasuda; Nobuo Yamashita; Masaya Matsumura; Yoshihiro Okada
Source:
Agricultural and forest entomology 2016 v.18 no.2 pp. 157-166
ISSN:
1461-9555
Subject:
sterile insect technique; Cylas formicarius elegantulus; longevity; autumn; Euscepes postfasciatus; sweet potatoes; winter; spring; summer; irradiation; Japan
Abstract:
... In southern Japan, sweet potato weevils Euscepes postfasciatus (Fairmaire) are being eradicated using the sterile insect technique because of their damaging effects on sweet potato crops. However, the effect of irradiation on the dispersal and survival of this species needs to be evaluated. We observed the dispersal of normal and irradiated weevils for 21 days after their release in a sweet potato ...
DOI:
10.1111/afe.12149

48. Age-Related Sperm Production, Transfer, and Storage in the Sweet Potato Weevil, Cylas formicarius (Fabricius) (Coleoptera: Curculionidae)

Author:
Satoshi Hiroyoshi; Tsuguo Kohama; Gadi V. P. Reddy
Source:
Journal of insect behavior 2016 v.29 no.6 pp. 689-707
ISSN:
0892-7553
Subject:
Curculionidae; Cylas formicarius elegantulus; females; insect behavior; insemination; males; spermatheca; spermatogenesis; spermatozoa
Abstract:
... The relationship between sperm production, insemination rate, and sperm transfer were studied in the sweet potato weevil, Cylas formicarius. Older adult males retained more sperm in the testes-seminal vesicle complex (TSC) and thus more was ejaculated into females at first mating. Number of matings per day for males was relatively constant across different ages, and frequent mating resulted in a r ...
DOI:
10.1007/s10905-016-9590-0

49. Invertebrate pests and diseases of sweetpotato (Ipomoea batatas): a review and identification of research priorities for smallholder production

Author:
A.C. Johnson; G.M. Gurr
Source:
Annals of applied biology 2016 v.168 no.3 pp. 291-320
ISSN:
0003-4746
Subject:
diagnostic techniques; Cylas formicarius elegantulus; sweet potatoes; drought; pheromone traps; crop yield; food security; burning; population growth; roots; decision making; postharvest losses; Ipomoea batatas; viruses; planting; industrialization; pathogens; harvesting; invertebrates; crop residues; developing countries; fallow; climate change; livestock; pests; risk reduction; pesticides; inoculum; Curculionidae; biological control; plant protection; soil nutrients; farmers; nutrition; Formicidae; composting; developed countries
Abstract:
... Sweetpotato has been the subject of little research worldwide compared with other major crop staples, and this is especially so for less developed countries where sweetpotato is critical for food security. This review synthesises information on plant protection issues that affect smallholder sweetpotato farmers in less developed countries to identify major issues and suggest research priorities. T ...
DOI:
10.1111/aab.12265

50. Screening of tropical isolates of Metarhizium anisopliae (Hypocreales: Clavicipitaceae) for virulence to the sweet potato weevil, Cylas formicarius (Coleoptera: Brentidae)

Author:
Ronnie Dotaona; Bree A.L. Wilson; Mark M. Stevens; Joanne Holloway; Gavin J. Ash
Source:
International journal of tropical insect science 2015 v.35 no.4 pp. 153-163
ISSN:
1742-7592
Subject:
Cylas formicarius elegantulus; Metarhizium anisopliae; adults; bioassays; germination; greenhouses; internal transcribed spacers; lethal concentration 50; mortality; pests; screening; soil sampling; sweet potatoes; temperature; transcription (genetics); virulence; Australia
Abstract:
... The sweet potato weevil (SPW), Cylas formicarius, is a serious pest of sweet potato in Australia and Papua New Guinea. Ten strains of Metarhizium sp. isolated from Australian soil samples were evaluated for their growth characteristics and screened for virulence to adult SPW under laboratory conditions. All isolates except QD62 (48.6%) had moderate to high germination (66–97%), and all took 2 to 4 ...
DOI:
10.1017/S1742758415000211

51. Sweet potato cultivar and harvest date influence on Cylas formicarius damage

Author:
T. W. Zimmerman; C. Montilla; S. M. A. Crossman
Source:
Acta horticulturae 2016 no.1118 pp. 153-156
ISSN:
0567-7572
Subject:
Curculionidae; Cylas formicarius elegantulus; Ipomoea batatas; cultivars; farmers; growing season; harvest date; leaves; males; pests; pheromones; roots; row spacing; soil; stems; sweet potatoes; traps; Caribbean; Virgin Islands
Abstract:
... Sweet potato weevil (Cylas formicarius) is the most serious pest of sweet potato (Ipomoea batatas), not only in the Virgin Islands but also throughout the Caribbean. It causes damage in the field to leaves, stems and tuberous roots. Our objective was to evaluate harvest date and weevil damage in 18 sweet potato cultivars. Twelve sweet potato cultivars were from in vitro virus-free material and six ...
DOI:
10.17660/ActaHortic.2016.1118.22

52. Biology of sweet potato weevil, Cylas formicarius F. on sweet potato

Author:
M. Devi; K. Indira Kumar; R.F. Niranjana
Source:
Journal of entomological research 2014 v.38 no.1 pp. 53-57
ISSN:
0974-4576
Subject:
Cylas formicarius elegantulus; eggs; larvae; pupae; research; sweet potatoes
Abstract:
... The life stages of Cylas formicarius in sweet potato tubers were assessed during first and second generations. In first generation, the highest egg period was recorded in Co-3 (White) (5.50 days). The lowest larval period was recorded in Kanjangad (24.16 days) while highest pupal period was recorded in Kanaka (Red) (7.56 days) and the total life cycle period in days was highest in Co-3 (White) (42 ...

53. An Insight into Sweet Potato Weevils Management: A Review

Author:
Hue Seow-Mun; Low Min-Yang
Source:
Psyche 2015 v.2015 pp. -
ISSN:
0033-2615
Subject:
Curculionidae; Cylas formicarius elegantulus; bacteria; biotechnology; entomopathogenic fungi; financial economics; food crops; genomics; integrated pest management; intercropping; mechanism of action; pesticides; pests; plantations; sex pheromones; subtropics; sweet potatoes
Abstract:
... Sweet potato is an important food crop that is grown widely in tropical and subtropical regions. Sweet potato weevil is the most disastrous pest affecting sweet potato plantations, causing millions of dollars losses annually. An effective integrated pest management (IPM) method will help to prevent economic losses, and it is crucial to understand the factors that contribute to weevil infestation a ...
DOI:
10.1155/2015/849560

54. Laboratory adaptation reduces female mating resistance in the sweet potato weevil

Author:
Takashi Kuriwada; Norikuni Kumano; Keiko Shiromoto; Dai Haraguchi
Source:
Entomologia experimentalis et applicata 2014 v.152 no.1 pp. 77-86
ISSN:
0013-8703
Subject:
Curculionidae; Cylas formicarius elegantulus; animals; beneficial organisms; biological control agents; females; foraging; male sterility; males; mass rearing; mating behavior; mating competitiveness; pests; spermatozoa; sterile insect technique; summer; tropics; Japan
Abstract:
... Selection for genetic adaptation might occur whenever an animal colony is maintained in the laboratory. The laboratory adaptation of behavior such as foraging, dispersal ability, and mating competitiveness often causes difficulties in the maintenance of biological control agents and other beneficial organisms used in procedures such as the sterile insect technique (SIT). Sweet potato weevil, Cylas ...
DOI:
10.1111/eea.12202

55. Mass‐rearing conditions do not affect responsiveness to sex pheromone and flight activity in sweetpotato weevils

Author:
T. Kuriwada; N. Kumano; K. Shiromoto; D. Haraguchi
Source:
Journal of applied entomology 2014 v.138 no.4 pp. 254-259
ISSN:
0931-2048
Subject:
Curculionidae; Cylas formicarius elegantulus; flight; mass rearing; sex pheromones; sterile insect technique
Abstract:
... For ensuring the effectiveness of sterile insect technique (SIT) programmes, maintaining the reproductive competitiveness and dispersal ability of mass‐reared sterile males is essential. Inadvertent selection is an important genetic process that frequently occurs during mass rearing to produce sterile males. We investigated the effect of mass‐rearing conditions on the responsiveness to sex pheromo ...
DOI:
10.1111/jen.12087

56. Are Sweetpotato Weevils (Coleoptera: Brentidae) Differentially Attracted to Certain Colors?

Author:
Nirupa Gadi; G.V.P. Reddy
Source:
Annals of the Entomological Society of America 2014 v.107 no.1 pp. 274-278
ISSN:
0013-8746
Subject:
Curculionidae; Cylas formicarius elegantulus; behavior change; color; field experimentation; growers; insects; pesticides; pheromone traps; population; sweet potatoes; toxicity; trapping; tubers
Abstract:
... The sweetpotato weevil Cylas formicarius (F.) (Coleoptera: Brentidae) is one of the most serious insects causing damage to sweetpotatoes in the world. Small populations of these insects can cause severe damage to tubers of the crop. Without proper and effective control, weevil populations are likely to cause a huge or complete loss of sweetpotato production in sweetpotato growing areas. Consequent ...
DOI:
10.1603/AN13135

57. Isolation of proline-based cyclic dipeptides from Bacillus sp. N strain associated with rhabitid entomopathogenic nematode and its antimicrobial properties

Author:
Nishanth Kumar; C. Mohandas; Bala Nambisan; D. R. Soban Kumar; Ravi S. Lankalapalli
Source:
World journal of microbiology & biotechnology 2013 v.29 no.2 pp. 355-364
ISSN:
0959-3993
Subject:
Bacillus (bacteria); Cylas formicarius elegantulus; Fusarium oxysporum; Rhabditis; Thanatephorus cucumeris; antimicrobial properties; apples; bacteria; biological control agents; carbendazim; cell free system; crops; dipeptides; entomopathogenic nematodes; farms; fungi; fungicides; insect larvae; oranges; plant pathogens; secondary metabolites
Abstract:
... Entomopathogenic nematodes (EPN) are well-known as biological control agents and are found to have associated bacteria which can produce a wide range of bioactive secondary metabolites. We report herewith isolation of six proline containing cyclic dipeptides cyclo(D-Pro-L-Leu), cyclo(L-Pro-L-Met), cyclo(D-Pro-L-Phe), cyclo(L-Pro-L-Phe), cyclo(L-Pro-L-Tyr) and cyclo(L-Pro-D-Tyr) from ethyl acetate ...
DOI:
10.1007/s11274-012-1189-9
PubMed:
23065379

58. Laboratory and field efficacy of entomopathogenic fungi for the management of the sweetpotato weevil, Cylas formicarius (Coleoptera: Brentidae)

Author:
Gadi V.P. Reddy; Zihua Zhao; Richard A. Humber
Source:
Journal of invertebrate pathology 2014 v.122 pp. 10-15
ISSN:
0022-2011
Subject:
Beauveria bassiana; Cylas formicarius elegantulus; Metarhizium brunneum; adults; azadirachtin; biological control; biological control agents; entomopathogenic fungi; larvae; nocturnal activity; pests; spinosad; sweet potatoes; tubers; Mariana Islands
Abstract:
... The sweetpotato weevil, Cylas formicarius (F.) (Coleoptera: Brentidae), is one of the most important pests of sweet potatoes in the world. With free trade between the United States and the U.S.-controlled Mariana Islands, C. formicarius has spread along with this commodity. Because of the cryptic nature of the larvae and nocturnal activity of the adults, and the cancellation of long-residual pesti ...
DOI:
10.1016/j.jip.2014.07.009

59. Sweet Potato Resistance to Euscepes postfasciatus (Coleoptera: Curculionidae): Larval Performance Adversely Effected by Adult's Preference to Tuber for Food and Oviposition

Author:
Okada Y.; Yasuda K.; Sakai T.; Ichinose K.
Source:
Journal of economic entomology 2014 v.107 no.4 pp. 1662-1673
ISSN:
0022-0493
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; Ipomoea batatas; Tuber (Tuberaceae); adults; body size; cluster analysis; cultivars; eclosion; eggs; immatures; larvae; larval development; oviposition; sweet potatoes; tubers
Abstract:
... The preferences of the West Indian sweet potato weevil, Euscepes postfasciatus (Fairmaire), to tubers of sweet potato, Ipomoea batatas (L.), for food and for oviposition were evaluated, and correlated to sweet potato's resistance to immatures. Adults (parent) were released in a plastic box containing tubers of sweet potato cultivars and maintained for 5 d, after which the adults on each tuber were ...

60. Bioactivity of Selected Eco-Friendly Pesticides Against Cylas formicarius (Coleoptera: Brentidae)

Author:
Leng Peter H.; Reddy Gadi V. P.
Source:
Florida entomologist 2012 v.95 no.4 pp. 1040-1047
ISSN:
0015-4040
Subject:
Azadirachta indica; Beauveria bassiana; Cylas formicarius elegantulus; Morinda citrifolia; adults; azadirachtin; clove oil; extracts; ingredients; insecticidal properties; malathion; neurotoxins; oils; peppermint oil; petroleum; risk; rosemary; spinosad; thyme
Abstract:
... Seven low risk pesticides including 1.2% azadirachtin (Azadirachta indica), extracts from Morinda citrifolia, petroleum oil 97%, Beauveria bassiana strain GHA, mixed essential oils (rosemary oil: 0.25%, peppermint oil: 0.25%, thyme oil: 0.25%, clove oil: 0.25% and other ingredients: 99.00%), spinosad and malathion, were evaluated against adults of the sweetpotato weevil, Cylas formicarius (Fabrici ...
DOI:
10.1653/024.095.0433

61. Efficient Sex Pheromone Trapping: Catching The Sweetpotato Weevil, Cylas formicarius

Author:
G. V. P. Reddy; Nirupa Gadi; Anthony J. Taianao
Source:
Journal of chemical ecology 2012 v.38 no.7 pp. 846-853
ISSN:
0098-0331
Subject:
Cylas formicarius elegantulus; canopy; chemical control; color; larvae; natural enemies; pests; quarantine; red light; sex pheromones; sweet potatoes; trapping; traps; tubers; vines
Abstract:
... The sweetpotato weevil, Cylas formicarius (Fabricius) (Coleoptera: Brentidae), is the most serious pest of sweetpotato around the world, damaging sweetpotatoes in the field and in storage, as well as being a quarantine pest. Because the larval period is spent within vines or tubers, and the adults are nocturnal, chemical control frequently is not effective. In addition, there are few natural enemi ...
DOI:
10.1007/s10886-012-0160-4
PubMed:
22782300

62. Insect Resistance in Traditional and Heirloom Sweetpotato Varieties

Author:
Jackson D. Michael; Harrison Howard F.
Source:
Journal of economic entomology 2013 v.106 no.3 pp. 1456-1462
ISSN:
0022-0493
Subject:
Agricultural Research Service; Chaetocnema confinis; Cylas formicarius elegantulus; Diabrotica; Elateridae; Phyllophaga; Systena; beetle infestations; breeding programs; cultivars; field experimentation; genotype; germplasm; insect larvae; insect pests; insect resistance; roots; soil insects; sweet potatoes; South Carolina
Abstract:
... Fifty-nine sweetpotato cultivars, including 16 heirlooms, 11 near-heirlooms (developed in the 1960s and 1970s), 19 cultivars from the 1980s, and 13 modern varieties (since 1990), were evaluated for resistance to soil insects in field experiments during 2010–2011 at the U.S. Department of Agriculture-Agriculture Research Service, U.S. Vegetable Laboratory (USDA-ARS, USVL), Charleston, SC. These exp ...

63. Sweetpotato weevil (Cylas spp.) resistance in African sweetpotato germplasm

Author:
Harriet Muyinza; Herbert L. Talwana; Robert O.M. Mwanga; Philip C. Stevenson
Source:
International journal of pest management 2012 v.58 no.1 pp. 73-81
ISSN:
1366-5863
Subject:
Curculionidae; Cylas formicarius elegantulus; cracking; cultivars; field experimentation; germplasm; insect pests; laboratory experimentation; landraces; plant breeding; progeny; resistance mechanisms; rooting; roots; screening; soil; sweet potatoes; Africa
Abstract:
... Host-plant resistance could be a useful tool for managing the weevils Cylas puncticollis and C. brunneus, which are major insect pests of sweetpotato in Africa. There is currently little information on existing resistance mechanisms against Cylas spp. in African cultivars, except where lower levels of weevil damage were attributed to escape due to deep rooting and reduced soil cracking, limiting t ...
DOI:
10.1080/09670874.2012.655701

64. Weevil resistant sweetpotato through biotechnology

Author:
Ghislain, M.; Tovar, J.; Prentice, K.; Ormachea, M.; Manrique, S.; Kreuze, J.; Rukarwa, R.; Sefasi, A.; Mukasa, S.; Ssemakula, G.; Wamalwa, L.; Machuka, J.
Source:
Acta horticulturae 2013 no.974 pp. 91-98
ISSN:
0567-7572
Subject:
Agrobacterium radiobacter; Bacillus thuringiensis; Curculionidae; Cylas formicarius elegantulus; bioassays; biotechnology; breeding; control methods; crop losses; cultivars; field experimentation; food security; gene expression; genes; genetic engineering; income; integrated pest management; larvae; lethal concentration 50; pests; petioles; protein content; regulatory sequences; reverse transcriptase polymerase chain reaction; roots; screening; somatic embryos; sporamin; sweet potatoes; toxicity; Sub-Saharan Africa
Abstract:
... African sweetpotato weevils (SPW), Cylas puncticollis and C. brunneus, pose a major threat to sweetpotato, which plays a vital role in food security and income generation for both the urban and rural poor in Sub-Saharan Africa (SSA). SPW can limit sweetpotato production causing total crop loss. Control methods such as integrated pest management and breeding have not succeeded satisfactorily in cur ...

65. The Effect of Inbreeding on Mating Behaviour of West Indian Sweet Potato Weevil Euscepes postfasciatus

Author:
Takashi Kuriwada; Norikuni Kumano; Keiko Shiromoto; Dai Haraguchi
Source:
Ethology 2011 v.117 no.9 pp. 822-828
ISSN:
0179-1613
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; body weight; copulation; inbreeding; inbreeding depression; prediction; progeny; reproductive performance; roots; sweet potatoes
Abstract:
... When there is an inbreeding depression, mating with a kin individual is generally considered maladaptive behaviour. However, in some conditions, the inclusive fitness benefits from inbreeding may outweigh the costs of inbreeding depression, and thus, inbreeding tolerance is often adaptive. Inbreeding depression and the effect of relatedness on mating behaviour in the West Indian sweet potato weevi ...
DOI:
10.1111/j.1439-0310.2011.01937.x

66. Inbreeding avoidance or tolerance? Comparison of mating behavior between mass-reared and wild strains of the sweet potato weevil

Author:
Takashi Kuriwada; Norikuni Kumano; Keiko Shiromoto; Dai Haraguchi
Source:
Behavioral ecology and sociobiology 2011 v.65 no.7 pp. 1483-1489
ISSN:
0340-5443
Subject:
Curculionidae; Cylas formicarius elegantulus; inbreeding; inbreeding depression; insemination; life history; mating behavior; prediction
Abstract:
... Inadvertent selection is an important genetic process that frequently occurs during laboratory culture. The mass-reared strain of the sweet potato weevil Cylas formicarius exhibits stronger inbreeding depression than the wild strain does. When inbreeding depression occurs in a population, mating with a close relative is often considered maladaptive; however, in some contexts, the inclusive fitness ...
DOI:
10.1007/s00265-011-1158-6

67. Is Elytral Color Polymorphism in Sweetpotato Weevil (Coleoptera: Brentidae) a Visible Marker for Sterile Insect Technique?: Comparison of Male Mating Behavior

Author:
Shiromoto, Keiko; Kumano, Norikuni; Kuriwada, Takashi; Haraguchi, Dai
Source:
Journal of economic entomology 2011 v.104 no.2 pp. 420-424
ISSN:
0022-0493
Subject:
Curculionidae; Cylas formicarius elegantulus; artificial selection; behavior change; color; dyes; elytra; inbreeding depression; insect pests; males; mating behavior; monitoring; sterile insect technique; survival rate; Japan
Abstract:
... The sterile insect technique (SIT) is widely used for suppressing or eradicating target pest insect populations. In the eradication programs using the SIT, a large number of sterile insects are marked and released in the field. In Japan, Cylas formicarius (F.) group (Coleoptera: Brentidae) weevils are marked with a fluorescent powder dye to monitor the progress of such programs. However, this moni ...
DOI:
10.1603/EC10341
PubMed:
21510188

68. Pre-exposure to sex pheromone did not affect mating behavior in the sweetpotato weevil Cylas formicarius

Author:
Kuriwada, Takashi; Kumano, Norikuni; Shiromoto, Keiko; Haraguchi, Dai
Source:
Journal of pest science 2011 v.84 no.1 pp. 93-97
ISSN:
1612-4758
Subject:
Cylas formicarius elegantulus; adsorption; males; mass rearing; mating behavior; sex pheromones; sterile insect technique
Abstract:
... In sterile insect technique (SIT) programs, the released sterile males are important for their effectiveness. The use of sex pheromones to collect males is economical; however, pre-exposure to sex pheromones may affect male mating behavior, and would thus reduce the effectiveness of the SIT programs. Males exposed to sex pheromone may become attractive to other males due to pheromone adsorption on ...
DOI:
10.1007/s10340-010-0331-4

69. Prolongation of the effective copulation period by fractionated‐dose irradiation in the sweet potato weevil, Cylas formicarius

Author:
Norikuni Kumano; Takashi Kuriwada; Keiko Shiromoto; Dai Haraguchi; Tsuguo Kohama
Source:
Entomologia experimentalis et applicata 2011 v.141 no.2 pp. 129-137
ISSN:
0013-8703
Subject:
Curculionidae; Cylas formicarius elegantulus; copulation; ecology; females; gamma radiation; germ cells; insect pests; irradiation; longevity; male sterility; males; reproductive performance; somatic cells; sterile insect technique; summer; Ryukyu Archipelago
Abstract:
... The sterile insect technique (SIT), based on the principles of population and behavioral ecology, is widely used to suppress or eradicate target pest insect populations. The effectiveness of SIT depends on the ability of released sterile males to mate with and inseminate wild females; however, the use of gamma radiation to induce sterility negatively affects both somatic cells as well as reproduct ...
DOI:
10.1111/j.1570-7458.2011.01181.x

70. Sweetpotato indigenous knowledge and adaptation to climate change in Malawi

Author:
Chipungu, F.P.; Ambali, A.J.D.; Saka, J.D. Kalenga; Mahungu, N.M.; Mkumbira, J.
Source:
Acta horticulturae 2012 v. no.938 pp. 467-473
ISSN:
0567-7572
Subject:
Curculionidae; Cylas formicarius elegantulus; climate change; early development; farmers; food security; foods; harvest date; indigenous knowledge; market prices; market value; markets; shelf life; sweet potatoes; Malawi
Abstract:
... A survey to document indigenous knowledge associated with sweetpotato production was conducted in Chitipa, Karonga and Mzimba in the North and Mulanje, Phalombe, Chikhwawa and Nsanje Districts of Malawi in 2003. The study aimed to better understand the knowledge associated with farmers’ varieties for potential use in the development of improved and acceptable varieties. In total, 268 varieties wer ...

71. Age-dependent investment in death-feigning behaviour in the sweetpotato weevil Cylas formicarius

Author:
KURIWADA, TAKASHI; KUMANO, NORIKUNI; SHIROMOTO, KEIKO; HARAGUCHI, DAI
Source:
Physiological entomology 2011 v.36 no.2 pp. 149-154
ISSN:
0307-6962
Subject:
Curculionidae; Cylas formicarius elegantulus; avoidance behavior; life history; longevity; longitudinal studies; prediction; virgin females
Abstract:
... Because life-history theory predicts that risky behaviours such as mating should increase as life expectancy decreases, predatory avoidance is expected to decrease with age. However, this prediction has not been examined. In the present study, the effect of age on death-feigning behaviour, a form of predatory avoidance behaviour in the sweetpotato weevil Cylas formicarius (Summers) (Coleoptera: Br ...
DOI:
10.1111/j.1365-3032.2010.00777.x

72. Intensive resistance by females before copulation induces insemination failure in the West Indian sweet potato weevil Euscepes postfasciatus

Author:
Kumano, Norikuni; Kuriwada, Takashi; Shiromoto, Keiko; Haraguchi, Dai; Kohama, Tsuguo
Source:
Population ecology 2011 v.53 no.1 pp. 111-117
ISSN:
1438-3896
Subject:
Cylas formicarius elegantulus; Euscepes postfasciatus; animals; copulation; eggs; energy expenditure; females; insemination; males; spermatozoa
Abstract:
... Persistent mating attempts by males (sexual harassment) are frequently observed among animals. For females, resisting persistent males can be costly because vigorous resistance increases both energy expenditure and the possibility of injury. Although one tactic for coping with male harassment is to cease resistance and mate with the persistent partner, the females of several species are able to pr ...
DOI:
10.1007/s10144-010-0217-6

73. Assessment of Effect of Partial Sterility on Mating Performance in Sweetpotato Weevil (Coleoptera: Curculionidae)

Author:
Kumano, N.; Kuriwada, T.; Shiromoto, K.; Haraguchi, D.; Kohama, T.
Source:
Journal of economic entomology 2010 v.103 no.6 pp. 2034–2041
ISSN:
0022-0493
Subject:
Curculionidae; Cylas formicarius elegantulus; females; gamma radiation; germ cells; insect pests; irradiation; males; mating competitiveness; reproductive performance; somatic cells; sterile insect technique; Ryukyu Archipelago
Abstract:
... The sterile insect technique (SIT) is widely used to suppress or eradicate target pest insect populations. Although the effectiveness of SIT depends on the ability of released sterile males to mate with and inseminate wild females, the use of gamma radiation to induce sterility negatively impacts reproductive cells as well as somatic cells. Consequently, sterilization by irradiation drastically di ...
DOI:
10.1603/EC10044

74. Effect of Mass Rearing on Life History Traits and Inbreeding Depression in the Sweetpotato Weevil (Coleoptera: Brentidae)

Author:
Kuriwada, T.; Kumano, N.; Shiromoto, K.; Haraguchi, D.
Source:
Journal of economic entomology 2010 v.103 no.4 pp. 1144-1148
ISSN:
0022-0493
Subject:
insect pests; Cylas formicarius elegantulus; insect breeding; strain differences; plant pests; inbreeding; risk assessment; mass rearing; inbred lines; inbreeding depression; insectaries; progeny; life cycle (organisms); insect rearing
Abstract:
... Inadvertent selection is an important genetic process that frequently occurs during laboratory culture and maintenance of biological control agents and other beneficial organisms used in procedures such as the sterile insect technique (SIT). We investigated effects of mass rearing and inbreeding depression on life history traits (number of progeny emerging from host plants, body weight, developmen ...
DOI:
10.1603/EC09361
PubMed:
20857721

75. Chemical composition and insecticidal activity of the essential oils from Bursera hollickii (Britton) found in Jamaica

Author:
Junor, Grace-Ann O.; Porter, Roy B.R.; Yee, Trevor H.; Williams, Lawrence A.D.
Source:
Journal of essential oil research 2008 v.20 no.6 pp. 560-565
ISSN:
1041-2905
Subject:
Cylas formicarius elegantulus; beta-pinene; essential oils; beta-caryophyllene; Bursera; mass spectrometry; aqueous solutions; humulene; alpha-pinene; extraction; terpinolene; imagos; alpha-terpineol; leaves; pesticidal plants; insect pests; insecticidal properties; distillation; chemical composition; gas chromatography; bark; Jamaica
DOI:
10.1080/10412905.2008.9700088

76. Effect of Irradiation on Mating Ability in the Male Sweetpotato Weevil (Coleoptera: Curculionidae)

Author:
Kumano, N.; Haraguchi, D.; Kohama, T.
Source:
Journal of economic entomology 2008 v.101 no.4 pp. 1198-1203
ISSN:
0022-0493
Subject:
Cylas formicarius elegantulus; males; irradiation; gamma radiation; mating behavior; mating competitiveness; male fertility; sterile insect technique
Abstract:
... The sterile insect technique (SIT) is widely used for suppressing or eradicating target pest insect populations. The effectiveness of SIT depends on the ability of released sterile males to mate with and inseminate wild females. Irradiation is the effective manner to sterilize mass-reared insects. The negative impacts of this procedure are not limited to damage on reproductive cells. Gamma-radiati ...
DOI:
10.1603/0022-0493(2008)101[1198:EOIOMA]2.0.CO;2
PubMed:
18767728

77. Virulence of the entomopathogenic fungi Beauveria bassiana and Metarhizium anisopliae to sweet potato weevil Cylas puncticollis and effects on fecundity and egg viability

Author:
Ondiaka, S.; Maniania, N.K.; Nyamasyo, G.H.N.; Nderitu, J.H.
Source:
Annals of applied biology 2008 v.153 no.1 pp. 41-48
ISSN:
0003-4746
Subject:
Beauveria bassiana; Curculionidae; Cylas formicarius elegantulus; Metarhizium anisopliae; adults; bioassays; conidia; dose response; eggs; entomopathogenic fungi; fecundity; females; insect physiology; insects; lethal concentration 50; mortality; sweet potatoes; viability; virulence
Abstract:
... The virulence of eight isolates of Metarhizium anisopliae and four isolates of Beauveria bassiana (Ascomycota: Hypocreales) to adult Cylas puncticollis (Coleoptera: Curculionidae) was tested in the laboratory. Insects were sprayed with a standard concentration of 1.0 x 10⁷ conidia mL⁻¹ using Burgerjon's spray tower. All the isolates tested were pathogenic to C. puncticollis. Mortality varied betwe ...
DOI:
10.1111/j.1744-7348.2008.00236.x

78. Assessment of Risk of Introduction of Cylas formicarius elegantulus (Coleoptera: Brentidae) into Weevil-Free Areas in the Southern United States

Author:
Addo-Bediako, A.; Tameru, B.; Jackai, L.E.N.; Bonsi, C.K.
Source:
Journal of economic entomology 2007 v.100 no.2 pp. 315-321
ISSN:
0022-0493
Subject:
Monte Carlo method; simulation models; Cylas formicarius elegantulus; sweet potatoes; food transport; introduced species; imports; Ipomoea batatas; quantitative risk assessment; risk reduction; probabilistic models; Southeastern United States
Abstract:
... We assessed the risk associated with introduction of sweet potato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Brentidae), from infested areas to noninfested areas via shipment of sweet potato, Ipomoea batatas (L.), roots within the southern United States. Our study quantifies the effectiveness of risk mitigation procedures of sweet potatoes before shipment in relation to introduct ...
DOI:
10.1603/0022-0493(2007)100[315:AOROIO]2.0.CO;2
PubMed:
17461052

79. A new species of Bracon (Hymenoptera: Braconidae) parasitic on alien sweetpotato weevils in the south-west islands of Japan

Author:
MAETO, Kaoru; UESATO, Takumi
Source:
Entomological science 2007 v.10 no.1 pp. 55-63
ISSN:
1343-8786
Subject:
Bracon; Cylas formicarius elegantulus; Euscepes postfasciatus; Ipomoea batatas; islands; larvae; new species; parasitism; rearing; vines; Japan; Philippines
Abstract:
... A new species of braconid, Bracon yasudai Maeto et Uesato sp. nov., is described here from the south-west islands of Japan. It is a solitary idiobiont ectoparasitoid of the larvae of the West Indian sweetpotato weevil, Euscepes postfasciatus (Curculionidae), and the sweetpotato weevil, Cylas formicarius (Brentidae), both feeding on Ipomoea batatas (L.) (Convolvulaceae). The percentage parasitism o ...
DOI:
10.1111/j.1479-8298.2006.00198.x

80. Effect of Irradiation on Dispersal Ability of Male Sweetpotato Weevils (Coleoptera: Brentidae) in the Field

Author:
Kumano, N.; Kohama, T.; Ohno, S.
Source:
Journal of economic entomology 2007 v.100 no.3 pp. 730-736
ISSN:
0022-0493
Subject:
Cylas formicarius elegantulus; irradiation; gamma radiation; sublethal effects; males; dispersal behavior; pheromone traps; sex pheromones; mark-recapture studies; sterile insect technique; Japan
Abstract:
... We used the mark-and-recapture method in the field to test the effect of gamma radiation on the dispersal ability of the male sweetpotato weevil, Cylas formicarius elegantulus (Summers) (Coleoptera: Brentidae), a serious sweetpotato pest in Japan. To evaluate the dispersal ability of male sweetpotato weevil, we released 27,218 males (13,302 males irradiated with a dose of 200 Gy and 13,916 nonirra ...
DOI:
10.1603/0022-0493(2007)100[730:EOIODA]2.0.CO;2
PubMed:
17598532

81. Electrophysiological and Behavioral Responses of a Cuban Population of the Sweet Potato Weevil to its Sex Pheromone

Author:
Sureda,T.; Quero, C.; Bosch, M.P.; Aviles, R.; Coll, F.; Renou, M.; Guerrero, A.
Source:
Journal of chemical ecology 2006 v.32 no.10 pp. 2177-2190
ISSN:
0098-0331
Subject:
Cylas formicarius elegantulus; sex pheromones; chemical composition; synthesis; antennae; sensilla; electrophysiology; electroantennography; stereoisomers; olfactometry; mating behavior; pheromone traps; Cuba
Abstract:
... The sex pheromone of feral sweet potato weevils Cylas formicarius elegantulus from Cuba was found, via solid-phase microextraction analysis, to be identical to (Z)-3-dodecenyl (E)-2-butenoate, a previously reported compound. Females emitted 20 pg pheromone d-1. In scanning electron microscopy studies carried out on the male antenna, we identified several types of sensilla: sensilla trichoidea of t ...
DOI:
10.1007/s10886-006-9138-4
PubMed:
16977491

82. Biological activity and chemical composition of the essential oil from Jamaican Hyptis verticillata Jacq

Author:
Facey, P.C.; Porter, R.B.R.; Reese, P.B.; Williams, L.A.D.
Source:
Journal of agricultural and food chemistry 2005 v.53 no.12 pp. 4774-4777
ISSN:
0021-8561
Subject:
Hyptis; chemical composition; sesquiterpenoids; insect pests; Cylas formicarius elegantulus; oviposition; Rhipicephalus microplus; insecticidal properties; essential oils; insect growth regulators; acaricidal properties; mass spectrometry; gas chromatography; insect reproduction; shoots
Abstract:
... The chemical composition of the essential oil obtained by hydrodistillation from the aerial parts of Hyptis verticillata Jacq. was elucidated by a combination of GC and GC-MS analyses. The oil was dominated by the sesquiterpenoids cadina-4,10(15)-dien-3-one (15.1%) (1) and aromadendr-1(10)-en-9-one (squamulosone) (30.7%) (2). The oil exhibited chemosterilant activities against the cattle tick, Boo ...
DOI:
10.1021/jf050008y

83. Sweetpotato for food and health: R&D issues on production, food quality, processing and marketing in India

Author:
Edison, S.
Source:
Acta horticulturae 2002 v. no.583 pp. 231-237
ISSN:
0567-7572
Subject:
acetates; Cylas formicarius elegantulus; sweet potatoes; sex pheromones; urban areas; tubers; integrated pest management; rural areas; health foods; kairomones; sales; starch; food quality; pickles; wholesale marketing; research programs; Fusarium oxysporum; pests; Rhizopus oryzae; periderm; markets; Curculionidae; farmers; syrups; soft drinks; germplasm conservation; India
Abstract:
... Sweetpotato is grown in India in 0.11 million hectares, with an annual production of 1.0 million tons and productivity of 8.8 t ha-1. The major constraints in the production and processing front for sweet potato in India are inconsistency in tuberization, seasonal instability in yield and lack of (i) weevil-resistant sweet potato varieties, (ii) adequate technological innovations on stable marketa ...
DOI:
10.17660/ActaHortic.2002.583.26

84. Sweetpotato weevil control

Author:
Nottingham, Stephen F.; Kays, Stanley J.
Source:
Acta horticulturae 2002 v. no.583 pp. 155-161
ISSN:
0567-7572
Subject:
Curculionidae; Cylas formicarius elegantulus; alternative hosts; biological control; breeding; chemical control; chemical ecology; cultivars; cultural control; larvae; monitoring; mulching; pests; sanitation; sex pheromones; sweet potatoes
Abstract:
... The sweetpotato weevil (Cylas formicarius) is the major pest of sweetpotato worldwide. Yield losses of up to 80% can occur. A range of control strategies are available. Cultural control methods, including sanitation, mulching and the destruction of alternative hosts, are widely practised. However, chemical control is constrained by the internal feeding of the larvae, while biological control strat ...
DOI:
10.17660/ActaHortic.2002.583.17

85. Biology of the African Sweetpotato Weevil Species Cylas puncticollis (Boheman) and C. brunneus (Fabricius) (Coleoptera: Apionidae)

Author:
N. E. J. M. Smit; A. van Huis
Source:
International journal of tropical insect science 1998 v.18 no.2 pp. 93-100
ISSN:
1742-7592
Subject:
Apoininae; Curculionidae; Cylas formicarius elegantulus; adults; egg production; eggs; females; laboratory experimentation; longevity; oviposition; oviposition sites; photophase; sex ratio; sweet potatoes; tubers
Abstract:
... The biology of two African sweetpotato weevil species, Cylas puncticollis and C. brunneus (Fabricius) (Coleoptera: Apionidae), was studied in laboratory experiments carried out at 27 ± 1°C, 45 ± 5% RH, and a 12 h photophase. Cylas puncticollis females lived longer than C. brunneus (141 ± 10 and 92±12 days respectively), developed faster (egg to adult 20–28 days, and 32–41 days respectively) and ha ...
DOI:
10.1017/S1742758400007712

86. Dispersal of male sweetpotato weevils (Coleoptera: Curculionidae) in fields with or without sweet potato plants

Author:
Miyatake, T.; Kawasaki, K.; Kohama, T.; Moriya, S.; Shimoji, Y.
Source:
Environmental entomology 1995 v.24 no.5 pp. 1167-1174
ISSN:
0046-225X
Subject:
Ipomoea batatas; Cylas formicarius elegantulus; fields; males; mark-recapture studies; Ryukyu Archipelago
Abstract:
... Dispersal distance of the male sweetpotato weevil, Cylas formicarius elegantulus (Summers), was estimated in the field. Two experiments were conducted. In experiment 1, release and capture were replicated 3 times from September to October in the same locality consisting mainly of sweet potato fields. Approximately 8,000 marked males were released and approximately 30% of released males were captur ...
DOI:
10.1093/ee/24.5.1167

87. Replacement of carcinogenic alkylating agent ethylene oxide in the synthesis of (Z)-3-dodecen-1-yl (E)-2-butenoate, sex pheromone of sweet-potato weevil, Cylas formicarius elegantulus (Summers) and Cylas formicarius formicarius (F.)

Author:
Lo, C.C.; Hung, M.D.; Liu, C.J.
Source:
Journal of chemical ecology 1992 v.18 no.2 pp. 95-103
ISSN:
0098-0331
Subject:
Cylas formicarius elegantulus; sex pheromones; toxic substances; butanol; insect control; synthesis
Abstract:
... An alternative synthesis of (Z)-3-dodecen-l-yl (E)-2-butenoate without use of carcinogenic ethylene oxide and HMPA is described. By coupling of the tetrahydropyranyl (THP) ether of 3-butyn-1-ol with 1-bromooctane with sodamide in liquid ammonia, 12-(2-tetrahydropyranyloxy)-9-dodecyne was obtained; subsequent hydrolysis and semihydrogenation afforded (Z)-3-dodecen-1-ol. The alcohol was then reacted ...
DOI:
10.1007/BF00993745
PubMed:
24254901

88. Isolation and characterization of pentacyclic triterpene ovipositional stimulant for the sweet potato weevil from Ipomoea batatas (L.) Lam

Author:
Son, K.C.; Severson, R.F.; Arrendale, R.F.; Kays, S.J.
Source:
Journal of agricultural and food chemistry 1990 v.38 no.1 pp. 134-137
ISSN:
0021-8561
Subject:
Ipomoea batatas; tubers; extraction; chemical composition; Cylas formicarius elegantulus; triterpene acids; oviposition attractants; chemical constituents of plants
Abstract:
... A methylene chloride extract from the surface of sweet potato storage roots (cultivar Centennial) was fractionated on silicic acid and eluted with hexane, 1:3 methylene chloride-hexane, and 1:1 methylene chloride-hexane. The 1:3 methylene chloride-hexane fraction yielded compound I: > 96% purity, the most dominant compound present; mp 238-239.5 degrees C; IR, 1730, 1250 cm-1. The mass spectrum of ...
DOI:
10.1021/jf00091a028

89. Potential of entomopathogenic nematodes as biological control agents of sweetpotato weevil (Coleoptera: Curculionidae)

Author:
Jansson, R.K.; Lecrone, S.H.; Gaugler, R.R.; Smart, G.C. Jr.
Source:
Journal of economic entomology 1990 v.83 no.5 pp. 1818-1826
ISSN:
0022-0493
Subject:
Ipomoea batatas; Cylas formicarius elegantulus; biological control; entomopathogenic nematodes; Heterorhabditis bacteriophora; Steinernema carpocapsae
Abstract:
... The entomopathogenic nematodes Heterorhabditisbacteriophora Poinar (=H. heliothidis Khan, Brooks, & Hirschmann) (HP88 strain) andSteinernema (=Neoaplectana) carpocapsae Weiser (All and G-13 strains) were evaluated asbiological control agents of the sweetpotato weevil, Cylas formicarius elegantulus (Summers). InPetri dish bioassays, all three strains were pathogenic to larvae and pupae of C. f.eleg ...
DOI:
10.1093/jee/83.5.1818

90. Sampling plans for the sweetpotato weevil (Coleoptera: Curculionidae) on sweet potato in southern Florida

Author:
Jansson, R.K.; McSorley, R.
Source:
Journal of economic entomology 1990 v.83 no.5 pp. 1901-1906
ISSN:
0022-0493
Subject:
Ipomoea batatas; Cylas formicarius elegantulus; cultivars; incidence; population density; sampling; Florida
Abstract:
... Sampling programs for the sweet potato weevil, Cylas formicarius elegantulus (Summers), were developed for 0.2-ha and 0.4-ha plots of sweetpotato (Ipomoea batatas (L.) Lam.). Taylor's power law was fit to data on spatialdispersion of sweetpotato weevil, and results were used to develop relationships between numbers ofsample units and levels of precision for selected mean densities per plant. Resul ...
DOI:
10.1093/jee/83.5.1901

91. Characterization of an oviposition stimulant from the surface of sweet potato Ipomoea batatas storage roots for the sweet potato weevil, Cylas formicarius elegantulus

Author:
Wilson, D.D.; Son, K.-C.; Nottingham, S.F.; Severson, R.F.; Kays, S.J.
Source:
Entomologia experimentalis et applicata 1989 v.51 no.1 pp. 71-75
ISSN:
0013-8703
Subject:
Cylas formicarius elegantulus; Ipomoea batatas; bioassays; cultivars; methylene chloride; oviposition; roots; solvents; sweet potatoes; triterpenoids
Abstract:
... An improved laboratory bioassay was used to characterize an oviposition stimulant from the surface of sweet potato Ipomoea batatas (L.) Lam. storage roots for the sweetpotato weevil, Cylas formicarius elegantulus (Summers). Filter paper discs impregnated with a methylene chloride surface extract of sweet potato storage roots induced significantly (p < 0.05) higher oviposition on root cores than th ...
DOI:
10.1111/j.1570-7458.1989.tb01215.x

92. Feeding by adult sweet potato weevils, Cylas formicarius elegantulus, on sweet potato leaves

Author:
Nottingham, S.F.; Son, K.-C.; Wilson, D.D.; Severson, R.F.; Kays, S.J.
Source:
Entomologia experimentalis et applicata 1988 v.48 no.2 pp. 157-163
ISSN:
0013-8703
Subject:
Cylas formicarius elegantulus; Ipomoea batatas; adults; bioassays; cultivars; feeding behavior; females; leaves; males; sweet potatoes
Abstract:
... A bioassay was developed to quantify the feeding of adult sweet potato weevils, Cylas formicarius elegantulus (Summers) (Coleoptera; Curculionidae) on the foliage of four cultivars (Centennial, Jewel, Resisto and Regal) of sweet potato (Ipomoea batatas (L.) Lam.) (Convolvulaceae). Weevils fed along the leaf veins, preferring the lower to the upper leaf surface. Males and females had similar levels ...
DOI:
10.1111/j.1570-7458.1988.tb01159.x

93. Feeding and oviposition preferences of the Sweet Potato Weevil, Cylas formicarius elegantulus, on the outer periderm and exposed inner core of storage roots of selected Sweet Potato cultivars

Author:
Nottingham, S.F.; Wilson, D.D.; Severson, R.F.; Kays, S.J.
Source:
Entomologia experimentalis et applicata 1987 v.45 no.3 pp. 271-275
ISSN:
0013-8703
Subject:
Curculionidae; Cylas formicarius elegantulus; Ipomoea batatas; cages; cultivars; females; oviposition; periderm; roots; sweet potatoes
Abstract:
... Cores from sweet potato (Ipomoea batatas L.) storage roots, with either the outer periderm or inner core exposed, were presented to female sweet potato weevils, Cylas formicarius elegantulus (Summers) (Coleoptera: Curculionidae) in cage preference tests. Tests with weevils of different ages showed that feeding was constant 21 to 76 days after emergence, while oviposition showed a slight peak betwe ...
DOI:
10.1111/j.1570-7458.1987.tb01094.x

94. Distribution of proteinases and carbohydrases in the midgut of larvae of the sweetpotato weevil Cylas formicarius elegantulus and response of proteinases to inhibitors from sweet potato

Author:
Baker, J.E.; Woo, S.M.; Mullen, M.A.
Source:
Entomologia experimentalis et applicata 1984 v.36 no.2 pp. 97-105
ISSN:
0013-8703
Subject:
Curculionidae; Cylas formicarius elegantulus; alpha-galactosidase; alpha-glucosidase; aminopeptidases; amylases; beta-galactosidase; beta-glucosidase; carboxypeptidases; cultivars; electrophoresis; endo-1,4-beta-glucanase; enzyme activity; field experimentation; larvae; midgut; oligopeptides; oligosaccharides; polymers; proteinases; starch; sweet potatoes; trypsin inhibitors
Abstract:
... Endoproteinase activity was confined to luminal fluid from anterior and posterior ventricular regions of midguts of larvae of the sweetpotato weevil, Cylas formicarius elegantulus (Summers). Aminopeptidase was found in luminal fluid (18%) but was primarily associated with insoluble fractions from cells of the posterior ventriculus (82%). Depending on substrate, carboxypeptidase activity was about ...
DOI:
10.1111/j.1570-7458.1984.tb03414.x