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1. Within-tree distribution of Ricania shantungensis (Hemiptera: Ricaniidae) eggs on chestnuts

Author:
Baek, Sunghoon; Lee, Joon-Ho; Park, Dug-Kee; Park, Yujeong; Kim, Min-Jung; Kim, Kyusoon; Seo, Hwa-Young; Choi, Yong-Seok
Source:
Journal of Asia-Pacific entomology 2020 v.23 no.2 pp. 536-539
ISSN:
1226-8615
Subject:
egg masses,   etc   ; Castanea; Hemiptera; branches; chestnuts; eggs; insect pests; trees; Korean Peninsula;     Show all 9 Subjects
Abstract:
... Within-tree distribution of an insect pest is useful to determine sample unit, sampling location, and required sample number for this pest within a tree. This study was conducted to characterize the within-tree distribution pattern and determine an efficient sample unit for eggs of Ricania shantungensis (Hemiptera: Ricaniidae) on a chestnut tree. A total of 60 chestnut trees were randomly selected ...
DOI:
10.1016/j.aspen.2020.03.013

2. Influence of cold temperature and exposure time on egg overwintering survival in the white-whiskered grasshopper (Orthoptera: Acrididae)

Author:
Branson, David H.
Source:
Journal of orthoptera research 2020 v.29 no.1 pp. 63-65
ISSN:
1937-2426
Subject:
egg masses,   etc   ; cold; eggs; exposure duration; grasshoppers; hatching; overwintering; snow; temperature;     Show all 9 Subjects
Abstract:
... The effect of cold temperatures and exposure time on egg survival and hatching success were examined in the white-whiskered grasshopper, Ageneotettixdeorum. Temperature treatments ranged from 4°C to -35°C, with treatment times ranging from 48 to 240 hours. Both decreasing temperatures and exposure time negatively affected egg survival, with a temperature below -25°C being lethal. Similar lethal te ...
DOI:
10.3897/jor.29.46967

3. The Effects of Relative Humidity on Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) Egg Hatch, Nymph Survival, and Adult Reproduction

Author:
Khadka, Arjun; Hodges, Amanda C.; Leppla, Norman C.; Tillman, Patricia G.
Source:
TheFlorida entomologist 2020 v.103 no.1 pp. 136-138
ISSN:
1938-5102
Subject:
egg masses,   etc   ; Halyomorpha halys; eggs; females; imagos; instars; nymphs; relative humidity; Florida;     Show all 9 Subjects
Abstract:
... Eggs, nymphs, and adults of Halyomorpha halys were exposed to 15%, 35%, 55%, 75%, or 90% RH provided by glycerol-water solutions. Although egg hatch and nymphal survival occurred at all concentrations, they were highest at 55% to 90% RH. Nymphs exposed at the second instar reached the adult stage only at 55% to 90% RH. Females laid the greatest number of egg clutches at 55% RH. Therefore, we belie ...
DOI:
10.1653/024.103.0424

4. Embryonic development of the false limpet Siphonaria lateralis from Atlantic Patagonia

Author:
Zabala, Soledad; Averbuj, Andrés; Bigatti, Gregorio; Penchaszadeh, Pablo E.
Source:
Invertebrate biology 2020 v.139 no.1 pp. e12276
ISSN:
1077-8306
Subject:
egg masses,   etc   ; Gastropoda; coasts; eggs; embryogenesis; habitats; hatching; juveniles; larvae; limpets; littoral zone; sympatry; Argentina;     Show all 13 Subjects
Abstract:
... Siphonariids are pulmonate gastropods inhabiting rocky intertidal habitats, and many studies have focused on these false limpets around the world. In the southern South Atlantic, studies on reproduction and development in species of Siphonaria are scarce. We studied the embryonic development and egg masses of Siphonaria lateralis at its northernmost distribution in Atlantic Patagonia. In S. latera ...
DOI:
10.1111/ivb.12276

5. Assessing the Impacts of Methoxychlor Exposure on the Viability, Reproduction, and Locomotor Behavior of the Seminole Ramshorn Snail (Planorbella duryi)

Author:
Frankel, Tyler E.; Bohannon, Meredith E.; Frankel, Jack S.
Source:
Environmental toxicology and chemistry 2020 v.39 no.1 pp. 220-228
ISSN:
0730-7268
Subject:
egg masses,   etc   ; Planorbella; adults; aquatic invertebrates; computer software; ecotoxicology; eggs; gas chromatography; methoxychlor; mortality; snails; viability;     Show all 12 Subjects
Abstract:
... In the present study, the effects of short‐term methoxychlor exposure on the viability, reproduction, and locomotor behavior of adult seminole ramshorn snails (Planorbella duryi) was assessed. To examine impacts on viability and behavior, individuals were exposed to a water control, vehicle control, or 12.5, 50, 100, 250, 500, or 1000 μg/L of methoxychlor for 48 h; and differences in mortality and ...
DOI:
10.1002/etc.4613

6. The effect of mating on female reproduction across hermaphroditic freshwater snails

Author:
Swart, Elferra M.; Starkloff, Naima C.; Ypenburg, Sanne; Ellers, Jacintha; van Straalen, Nico M.; Koene, Joris M.
Source:
Invertebrate biology 2020 v.139 no.1 pp. e12275
ISSN:
1077-8306
Subject:
egg masses,   etc   ; Biomphalaria alexandrina; Lymnaea stagnalis; eggs; fecundity; females; hermaphroditism; males; progeny; proteins; reproductive success; resource allocation; snails;     Show all 13 Subjects
Abstract:
... Sexual conflicts often arise between mating partners because each sex tries to maximize its own reproductive success. One major male strategy to influence a partner's resource allocation is the transfer of accessory gland proteins. This has been shown to occur in simultaneous hermaphrodites as well as in organisms with separate sexes. Although accessory gland proteins affect the investment of reso ...
DOI:
10.1111/ivb.12275

7. Warming alone increased exotic snail reproduction and together with eutrophication influenced snail growth in native wetlands but did not impact plants

Author:
Meza-Lopez, Maria M.; Siemann, Evan
Source:
The Science of the total environment 2020 v.704 pp. 135271
ISSN:
0048-9697
Subject:
egg masses,   etc   ; Pomacea maculata; biomass; eggs; environmental factors; eutrophication; herbivores; indigenous species; introduced plants; nutrients; snails; temperature; trophic levels; wetlands;     Show all 14 Subjects
Abstract:
... Warming and eutrophication can have varying effects on exotic species performance and their interactions. These effects can vary with trophic level, but are rarely investigated simultaneously on exotic species from multiple trophic levels. To address this, we manipulated temperature, nutrients, and plant origin (native vs. exotic) in snail invaded wetland communities. Warming increased exotic appl ...
DOI:
10.1016/j.scitotenv.2019.135271

8. Pre‐cold acclimation promotes cryoprotectant accumulation and enhances freezing tolerance of Meloidogyne incognita

Author:
Wang, Yuanzheng; Liu, Chen; Ren, Ping; Li, Yingmei
Source:
Phytopathologische Zeitschrift 2020 v.168 no.6 pp. 337-341
ISSN:
0931-1785
Subject:
egg masses,   etc   ; Meloidogyne incognita; acclimation; cold tolerance; cold treatment; cryoprotectants; freezing; frost injury; glycerol; hatching; juveniles; larvae; pathogenicity; survival rate; trehalose;     Show all 15 Subjects
Abstract:
... Strong evidence suggests that cryoprotectant accumulation during pre‐cold acclimation protects cells against freezing injuries caused by cellular dehydration. In this study, the concentrations of trehalose and glycerol were measured in Meloidogyne incognita and it was found that both cryoprotectants were significantly accumulated in second‐stage juveniles (J2) of M. incognita after acclimation at ...
DOI:
10.1111/jph.12897

9. The oviposition behavior of fall armyworm moths is unlikely to compromise the refuge strategy in genetically modified Bt crops

Author:
Gonçalves, Jaciara; Rodrigues, João Victor C.; Santos-Amaya, Oscar F.; Paula-Moraes, Silvana V.; Pereira, Eliseu José G.
Source:
Journal of pest science 2020 v.93 no.3 pp. 965-977
ISSN:
1612-4758
Subject:
egg masses,   etc   ; Bacillus thuringiensis; Spodoptera frugiperda; corn; crops; field experimentation; greenhouses; intensive farming; larvae; moths; pests; resistance management; selection pressure; transgenic plants; Brazil;     Show all 15 Subjects
Abstract:
... Non-random oviposition preference by target pest species on Bt and non-Bt refuge plants may increase the proportion of the population under selection pressure, reducing the value of the refuge strategy for resistance management. Here, we tested the oviposition preference for Bt over non-Bt plants and the damage-avoiding oviposition behavior of moths of the fall armyworm (FAW), Spodoptera frugiperd ...
DOI:
10.1007/s10340-020-01219-5

10. Effect of plant-derived organic amendments on Meloidogyne incognita infecting okra, Abelmoschus esculentus L.

Author:
Premachandra, W. T. S. Dammini; Damithri, W. H. D. P. I.; Neilson, Roy
Source:
Archiv für Phytopathologie und Pflanzenschutz 2020 v.53 no.9-10 pp. 414-424
ISSN:
1477-2906
Subject:
egg masses,   etc   ; Abelmoschus esculentus; Lantana camara; Meloidogyne incognita; Morinda citrifolia; females; galls; leaves; nematode control; okra; plant parasitic nematodes; root diseases; root systems; soil; soil amendments;     Show all 15 Subjects
Abstract:
... Pot trials were conducted to determine the efficacy of incorporating fresh leaves of Morinda citrifolia, Lantana camara and Palm pressed fiber into soil, to manage Meloidogyne incognita, infecting okra, Abelmoschus esculentus L. All the amendments were effective against M. incognita with significantly reduced gall formation and multiplication, the greatest effect recorded was associated with plant ...
DOI:
10.1080/03235408.2020.1728019

11. Cricotopus lebetis Intraspecific Competition and Damage to Hydrilla

Author:
Baniszewski, Julie; Miller, Nicole; Kariuki, Eutychus M.; Cuda, James P.; Weeks, Emma N.I.
Source:
TheFlorida entomologist 2020 v.103 no.1 pp. 32-37
ISSN:
1938-5102
Subject:
egg masses,   etc   ; Cricotopus; Hydrilla verticillata; adults; aquatic insects; biological control agents; eclosion; eggs; females; intraspecific competition; larvae; life history; mass rearing; monitoring; prediction; pupae; pupation; survival rate; Florida;     Show all 19 Subjects
Abstract:
... Cricotopus lebetis Sublette (Diptera: Chironomidae) is an aquatic insect adventive in Florida. Evidence from previous studies suggest the insect may have value as an augmentative biological control agent for hydrilla, Hydrilla verticillata (L.f.) Royle (Hydrocharitaceae), but there are gaps in knowledge of the biology and life history traits. To increase understanding of this insect, this study wa ...
DOI:
10.1653/024.103.0405

12. Analysis of Cotton Chromosome 11 and 14 Root-Knot Nematode Resistance Quantitative Trait Loci Effects on Root-Knot Nematode Postinfection Development, Egg Mass Formation, and Fecundity

Author:
Wubben, Martin J.; Gaudin, Amanda G.; McCarty, Jack C.; Jenkins, Johnie N.
Source:
Phytopathology 2020 v.110 no.4 pp. 927-932
ISSN:
0031-949X
Subject:
egg masses,   etc   ; Gossypium hirsutum; Meloidogyne incognita; adults; cotton; eggs; fecundity; females; isogenic lines; juveniles; loci; quantitative trait loci; root-knot nematodes;     Show all 13 Subjects
Abstract:
... Cotton (Gossypium hirsutum) resistance to root-knot nematode (RKN) (Meloidogyne incognita) is controlled by quantitative trait loci (QTLs) on chromosomes 11 (CHR11) and 14 (CHR14). The individual contributions of these QTLs to resistance are not completely understood. We developed near isogenic lines susceptible at both loci (null), having CHR11 or CHR14 alone, and having both QTLs (CHR11/CHR14). ...
DOI:
10.1094/PHYTO-09-19-0370-R

13. Population growth correlates with increased fecundity in three-spined stickleback populations in a human-disturbed environment

Author:
Candolin, Ulrika; Voigt, Heinz-Rudolf
Source:
Aquatic sciences 2020 v.82 no.2 pp. 21
ISSN:
1015-1621
Subject:
egg masses,   etc   ; Gasterosteus aculeatus; algae; anthropogenic activities; biomass; body size; eutrophication; fecundity; food intake; gravid females; mortality; population growth; predators; spawning; time series analysis; Baltic Sea;     Show all 16 Subjects
Abstract:
... Human activity is altering the dynamics of populations through effects on fecundity, mortality and migration. An increased abundance of three-spined stickleback (Gasterosteus aculeatus) in the Baltic Sea has been attributed to a human-caused decline of top predators. However, recent research indicates that a top-down effect cannot fully explain the population growth, but the contribution of a bott ...
DOI:
10.1007/s00027-020-0695-3

14. Bottom-trawl catch composition in a highly polluted coastal area reveals multifaceted native biodiversity and complex communities of fouling organisms on litter discharge

Author:
Crocetta, Fabio; Riginella, Emilio; Lezzi, Marco; Tanduo, Valentina; Balestrieri, Liliana; Rizzo, Lucia
Source:
Marine environmental research 2020 v.155 pp. 104875
ISSN:
0141-1136
Subject:
egg masses,   etc   ; anthropogenic activities; biodiversity; biomass; catch composition; coasts; community structure; fauna; fish; fouling; indigenous species; invertebrates; remediation; trawl nets; water pollution; Tyrrhenian Sea;     Show all 16 Subjects
Abstract:
... Areas subjected to anthropogenic impacts are important to test the effect of stressors on local biota. We assessed with trawl net the composition and abundance of megafauna, litter, and litter-fouling communities in the soft bottoms of the National Interest Priority Site (NIPS) of Bagnoli-Coroglio (Gulf of Naples, Tyrrhenian Sea) at different depths. The megafauna accounted for 3444 specimens refe ...
DOI:
10.1016/j.marenvres.2020.104875

15. Attraction of Chelonus insularis to host and host habitat volatiles during the search of Spodoptera frugiperda eggs

Author:
Roque-Romero, Linnet; Cisneros, Juan; Rojas, Julio C.; Ortiz-Carreon, Fabian R.; Malo, Edi A.
Source:
Biological control 2020 v.140 pp. 104100
ISSN:
1049-9644
Subject:
egg masses,   etc   ; Chelonus; Spodoptera frugiperda; Zea mays; biological control; corn; eggs; females; habitats; hosts; insect pests; larvae; olfactometers; parasitoids; seedlings; sex pheromones; wasps;     Show all 17 Subjects
Abstract:
... Egg parasitoids use different strategies than do larval parasitoids to locate hosts. The wasp Chelonus insularis Cresson is a key egg parasitoid of the fall armyworm (FAW), Spodoptera frugiperda (J. E. Smith), one of the main insect pests of maize (Zea mays L.). Using a Y-glass tube olfactometer, in this study we determined the roles of chemical cues from host and host habitats used by C. insulari ...
DOI:
10.1016/j.biocontrol.2019.104100

16. A 3-year survey on parasitism of Halyomorpha halys by egg parasitoids in northern Italy

Author:
Moraglio, Silvia T.; Tortorici, Francesco; Pansa, Marco G.; Castelli, Gabriele; Pontini, Marianna; Scovero, Sara; Visentin, Sara; Tavella, Luciana
Source:
Journal of pest science 2020 v.93 no.1 pp. 183-194
ISSN:
1612-4758
Subject:
egg masses,   etc   ; Anastatus bifasciatus; Halyomorpha halys; Nearctic region; Telenomus; Trissolcus basalis; adults; biological control; eggs; host range; hyperparasitoids; insect control; parasitism; surveys; Italy;     Show all 15 Subjects
Abstract:
... A 3-year survey was carried out to assess the impact of egg parasitoids on Halyomorpha halys in northern Italy. In total, 1826 H. halys egg masses were collected in the 3 years, and parasitoid adults emerged from 12% of eggs in 2016 and 2017, and from 21% in 2018. Anastatus bifasciatus was the main species emerging from H. halys eggs at all sites and years, confirming its ability to develop on fre ...
DOI:
10.1007/s10340-019-01136-2

17. Perspective: shedding light on spotted lanternfly impacts in the USA

Author:
Urban, Julie M
Source:
Pest management science 2020 v.76 no.1 pp. 10-17
ISSN:
1526-498X
Subject:
egg masses,   etc   ; Lycorma delicatula; economic impact; excreta; insects; pest management; pests; photosynthesis; quarantine; sooty molds; trade; tree health; vineyards; Delaware; Maryland; New Jersey; Pennsylvania; Virginia;     Show all 18 Subjects
Abstract:
... Spotted lanternfly (SLF), Lycorma delicatula (Hemiptera: Fulgoridae) is an invasive phloem‐feeding planthopper currently being quarantined in a 24 000 km² area in eastern Pennsylvania, New Jersey, Maryland, and Delaware, with a second population under quarantine in a 46 km² area in Virginia. Because this insect feeds on over 70 species of plants, it has the potential to impact a wide range of sect ...
DOI:
10.1002/ps.5619

18. Direct development in the intertidal South American shell-less Onchidella marginata (Couthouy in Gould, 1852) (Gastropoda: Heterobranchia: Onchidiidae)

Author:
Dalton, María Cecilia; Penchaszadeh, Pablo Enrique
Source:
Molluscan research 2019 v.39 no.4 pp. 373-376
ISSN:
1448-6067
Subject:
egg masses,   etc   ; Onchidiidae; adults; ancestry; encapsulation; littoral zone; mussels; water currents; Argentina; New Zealand;     Show all 10 Subjects
Abstract:
... This work shows evidence of complete encapsulated development of Onchidella marginata for the first time in South America. Recent common ancestry was suggested for geographically separated New Zealand sub-Antarctic and South American populations of Onchidella. This could be explained as driven by passive rafting mediated by circumpolar ocean currents. In samples from mussel- and algal-beds in inte ...
DOI:
10.1080/13235818.2019.1644712

19. Active parental care in the peppermint shrimp Lysmata boggessi: the effect of embryo age and circadian cycle

Author:
Baeza, J. Antonio; Liu, Xiaomi; Kostecka, Laurie; Wortham, Jennifer
Source:
Marine biology 2019 v.166 no.10 pp. 132
ISSN:
0025-3162
Subject:
egg masses,   etc   ; Lysmata; appendages; aquariums; eggs; embryogenesis; hermaphroditism; oxygen; scanning electron microscopy; shrimp; ultrastructure; Florida;     Show all 12 Subjects
Abstract:
... The presence/absence of active parental care (APC) was tested in the simultaneously hermaphroditic shrimp Lysmata boggessi. Lysmata boggessi was predicted to engage in APC given that the egg masses spawned by hermaphrodites are > 1 mm thick, the theoretical limit that allows sufficient oxygen supply by diffusion in living tissue. Furthermore, APC was predicted to increase in intensity with embryo ...
DOI:
10.1007/s00227-019-3579-0

20. The scale of effect of landscape context varies with the species’ response variable measured

Author:
Moraga, Andrew D.; Martin, Amanda E.; Fahrig, Lenore
Source:
Landscape ecology 2019 v.34 no.4 pp. 703-715
ISSN:
0921-2973
Subject:
egg masses,   etc   ; Lithobates sylvaticus; fecundity; landscapes; ponds; surveys; eggs; prediction; forests; Ontario;     Show all 10 Subjects
Abstract:
... CONTEXT: To detect an effect of landscape context on a species’ response, the landscape variables need to be measured within the appropriate distance from the species’ response, i.e. at the scale of effect. However, it is not clear what factors determine the scale of effect. OBJECTIVE: Our objective was to test the prediction that the scale of effect should be smallest when the species’ response i ...
DOI:
10.1007/s10980-019-00808-9