Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
Möchten Sie über diese Zeitschrift informiert bleiben? Klicken Sie bitte auf die Buttons, um unsere Alerts zu abonnieren.
Food stress, fluctuating asymmetry and reproductive performance in the gryllid crickets Gryllus bimaculatus and Gryllodes sigillatus
in BehaviourSearch for other papers by Samantha Mallard in
Current site
Google Scholar
Search for other papers by C.J. Barnard in
Current site
Google Scholar
Abstract
While associations between sexual selection, developmental stress and fluctuating asymmetry (FA) remain controversial, this does not necessarily undermine the more general hypothesis that FA reflects developmental instability and functional competence. This applies as much to reproductive processes as to any other. If this is the case, however, we should expect FA and measures of performance to covary under conditions of developmental stress. Using an established association between morphometric FA and reproductive performance in the gryllid crickets Gryllus bimaculatus and Gryllodes sigillatus, we looked at the effect of food stress on covariation between FA and measures of performance (vigour of locomotion and interaction, mating speed, sperm transfer, egg production and offspring weight). The results showed a clear effect of food treatment in males and females of both species, with composite measures reflecting greater FA and reduced performance being greatest when crickets were reared on impoverished food. Inspection of independent means suggested FA may have been most influenced by a relaxation of food stress under high quality feeding conditions, while reproductive performance was more susceptible to the reduction in food quality under low quality conditions.
Kauf
Sofortzugang erwerben (PDF-Download und unbegrenzter Online-Zugang):
Institutszugang
Melden Sie sich mit Open Athens, Shibboleth oder Ihren institutionellen Anmeldedaten an.
Persönliche Anmeldung
Melden Sie sich mit Ihrem brill.com-Konto an
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 869 | 106 | 11 |
| Gesamttextansichten | 163 | 12 | 0 |
| PDF-Downloads | 132 | 18 | 0 |
Food stress, fluctuating asymmetry and reproductive performance in the gryllid crickets Gryllus bimaculatus and Gryllodes sigillatus
in BehaviourSearch for other papers by Samantha Mallard in
Current site
Google Scholar
PubMed
Search for other papers by C.J. Barnard in
Current site
Google Scholar
PubMed
Abstract
While associations between sexual selection, developmental stress and fluctuating asymmetry (FA) remain controversial, this does not necessarily undermine the more general hypothesis that FA reflects developmental instability and functional competence. This applies as much to reproductive processes as to any other. If this is the case, however, we should expect FA and measures of performance to covary under conditions of developmental stress. Using an established association between morphometric FA and reproductive performance in the gryllid crickets Gryllus bimaculatus and Gryllodes sigillatus, we looked at the effect of food stress on covariation between FA and measures of performance (vigour of locomotion and interaction, mating speed, sperm transfer, egg production and offspring weight). The results showed a clear effect of food treatment in males and females of both species, with composite measures reflecting greater FA and reduced performance being greatest when crickets were reared on impoverished food. Inspection of independent means suggested FA may have been most influenced by a relaxation of food stress under high quality feeding conditions, while reproductive performance was more susceptible to the reduction in food quality under low quality conditions.
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 869 | 106 | 11 |
| Gesamttextansichten | 163 | 12 | 0 |
| PDF-Downloads | 132 | 18 | 0 |
