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1. Costly sexual harassment in a beetle

Author:
GAY, LAURÉNE; EADY, PAUL E.; VASUDEV, RAM; HOSKEN, DAVID J.; TREGENZA, TOM
Source:
Physiological entomology 2009 v.34 no.1 pp. 86-92
ISSN:
0307-6962
Subject:
Callosobruchus maculatus; copulation; egg production; eggs; females; male genitalia; males; mating frequency; progeny; sexual selection; toxic substances
Abstract:
... The optimal number of mating partners for females rarely coincides with that for males, leading to sexual conflict over mating frequency. In the bruchid beetle Callosobruchus maculatus, the fitness consequences to females of engaging in multiple copulations are complex, with studies demonstrating both costs and benefits to multiple mating. However, females kept continuously with males have a lower ...
DOI:
10.1111/j.1365-3032.2008.00656.x

2. Diel behaviour and time budget of the adult pine weevil Hylobius abietis

Author:
Fedderwitz, Frauke; Björklund, Niklas; Ninkovic, Velemir; Nordlander, Göran
Source:
Physiological entomology 2014 v.39 no.2 pp. 103-110
ISSN:
0307-6962
Subject:
Hylobius abietis; Picea abies; adults; egg production; females; forest regeneration; girdling; locomotion; males; plant response; seedlings; Europe
Abstract:
... The pine weevil [Hylobius abietis (L.); Coleoptera: Curculionidae] has a high economic impact on forest regeneration in Europe. The general biology of the pine weevil has received considerable attention, although there is insufficient knowledge about its diel behaviour and time budget. Therefore, in the present study, the feeding and locomotion behaviour of individual adult weevils on Norway spruc ...
DOI:
10.1111/phen.12053

3. Effect of bacteria on nutritional status and reproductive success of the Mediterranean fruit fly Ceratitis capitata

Author:
BEN-YOSEF, MICHAEL; JURKEVITCH, EDOUARD; YUVAL, BOAZ
Source:
Physiological entomology 2008 v.33 no.2 pp. 145-154
ISSN:
0307-6962
Subject:
Ceratitis capitata; bacterial communities; ciprofloxacin; diet; digestive system; eclosion; egg production; eggs; females; food consumption; ingestion; intestinal microorganisms; lipids; males; minerals; nitrogen-fixing bacteria; nutritional status; oviposition; parents; peptides; piperacillin; progeny; reproductive success; sugars; weight gain
Abstract:
... Mediterranean fruit flies (Ceratitis capitata Wiedemann, Diptera: Tephritidae) harbor a community of diazotrophic bacteria in their digestive system. The present study aims to test the hypothesis that bacteria contribute to fly fitness by enhancing copulatory success and egg production in males and females, respectively. After eclosion, flies were fed a full diet containing peptides, sugar and min ...
DOI:
10.1111/j.1365-3032.2008.00617.x

4. Effects of multiple mating on the fecundity of an invasive pest (Octodonta nipae): the existence of an intermediate optimal female mating rate

Author:
Li, Jinlei; Zhang, Xiang; Hou, Youming; Tang, Baozhen
Source:
Physiological entomology 2014 v.39 no.4 pp. 348-354
ISSN:
0307-6962
Subject:
Chrysomelidae; copulation; egg production; eggs; fecundity; females; hatching; insects; longevity; males; mating frequency; oviposition; paternity; pests; population growth; reproductive efficiency; resource allocation
Abstract:
... Multiple mating is found in many insect taxa where both of the sexes can mate more than once. For males, this leads to the advantage of increasing their paternity by fertilizing more females. However, there is a trade‐off of resource allocation between reproduction and other life‐history characters. In the present study, the impact of increased mating rate on reproductive fitness of the invasive n ...
DOI:
10.1111/phen.12081

5. Impacts of temperature on metabolic rates of adult Extatosoma tiaratum reared on different host plant species

Author:
Hill, Sarah J.; Silcocks, Sarah C.; Andrew, Nigel R.
Source:
Physiological entomology 2020 v.45 no.1 pp. 7-15
ISSN:
0307-6962
Subject:
Eucalyptus; Extatosoma tiaratum; Rubus plicatus; adulthood; diet; egg production; fecundity; females; host plants; imagos; insects; landscapes; leaves; longevity; males; metabolism; rearing; temperature; thermal stress
Abstract:
... Access to balanced nutrition enables optimum health and development, body repair, fat storage, increased fecundity and longevity. In the present study, we assessed the responses of a generalist leaf feeder (the phasmid Extatosoma tiaratum) reared continuously on one of three host plants, tree lucerne (Chamaecyisus palmensis), bramble (Rubus fruticosus) and Eucalyptus species, in a low fluctuating ...
DOI:
10.1111/phen.12310

6. Life‐history and demographic traits of the marula fruit fly Ceratitis cosyra: potential consequences of host specialization

Author:
Roets, Petrus D.; Bosua, Henrika; Ruth Archer, C.; Weldon, Christopher W.
Source:
Physiological entomology 2018 v.43 no.4 pp. 259-267
ISSN:
0307-6962
Subject:
Ceratitis cosyra; Sclerocarya birrea subsp. caffra; asymmetry; copulation; courtship; egg production; eggs; evolution; fecundity; females; fruit flies; life history; longevity; males; reproductive success; spermatozoa
Abstract:
... Life‐history strategies are diverse both across and within species, although the factors shaping this diversity are not fully understood. In the present study, we investigate the life‐history strategies of the marula fruit fly Ceratitis cosyra (Walker) (Diptera: Tephritidae) and how they differ between the sexes. We measure lifespan and age‐dependent reproductive effort in both sexes. In females, ...
DOI:
10.1111/phen.12255

7. Linking larval nutrition to adult reproductive traits in the European corn borer Ostrinia nubilalis

Author:
Bonoan, Rachael E.; Al‐Wathiqui, Nooria; Lewis, Sara
Source:
Physiological entomology 2015 v.40 no.4 pp. 309-316
ISSN:
0307-6962
Subject:
Ostrinia nubilalis; adults; animal breeding; carbon; diet; egg production; eggs; fecundity; females; larvae; males; moths; nitrogen; nitrogen content; nutrients; rearing; reproductive fitness; reproductive traits; somatic cells; spermatophores
Abstract:
... Throughout an organism's lifetime, resources are strategically allocated to many different functions, including reproduction. Reproduction can be costly for both sexes; females produce nutrient‐rich eggs, whereas males of many species produce large and complex ejaculates. In capital breeding insects, nutrients are mainly acquired during the larval period, yet allocation decisions impact the reprod ...
DOI:
10.1111/phen.12116

8. Sexually dimorphic immune response in the harem polygynous Wellington tree weta Hemideina crassidens

Author:
KELLY, CLINT D.; JENNIONS, MICHAEL D.
Source:
Physiological entomology 2009 v.34 no.2 pp. 174-179
ISSN:
0307-6962
Subject:
Hemideina; adults; body condition; egg production; encapsulation; fecundity; females; immune response; insects; longevity; males; polygyny; reproductive traits; sexual dimorphism; sexual selection; testes
Abstract:
... Adult males are often less immunocompetent than females. One explanation for this is that intense sexual selection causes males to trade-off investment in immunity with traits that increase mating success. This hypothesis is tested in the Wellington tree weta (Hemideina crassidens), a large, sexually dimorphic orthopteran insect in which males possess enormous mandibular weaponry used during fight ...
DOI:
10.1111/j.1365-3032.2009.00671.x