Integrating behaviour with life history: boldness of the field cricket, Gryllus integer, during ontogeny
نویسندگان
چکیده
منابع مشابه
The role of neurohormonal octopamine during 'fight or flight' behaviour in the field cricket Gryllus bimaculatus.
Octopamine has been called the 'fight or flight' hormone of insects. We tested this hypothesis by measuring octopamine levels in the haemolymph of field crickets after fighting, flying, courting and escape behaviours. Octopamine levels in the cricket Gryllus bimaculatus increased during aggressive (agonistic) behaviour from baseline levels of 4.5 +/- 2.1 pg microliters-1 haemolymph to 24.3 +/- ...
متن کاملQuantitative Genetics of Sexual Selection in the Field Cricket, Gryllus Integer.
Major theories of sexual selection predict heritable variation in female preferences and male traits and a positive genetic correlation between preference and trait. Here we show that female Texas field crickets, Gryllus integer, have heritable genetic variation for the male calling song stimulus level that produces the greatest phonotactic response. Approximately 34% of the variation in female...
متن کاملNew microsatellite loci isolated from the field cricket Gryllus bimaculatus characterized in two cricket species, Gryllus bimaculatus and Gryllus campestris.
We have developed a new set of 27 polymorphic markers for each of two cricket species, Gryllus bimaculatus and Gryllus campestris. Initially, 14 published G. bimaculatus loci were tested in G. campestris; however, only five loci were polymorphic. Therefore, we isolated an additional 50 new microsatellite loci from G. bimaculatus and tested these in both species. In a minimum of 20 individuals, ...
متن کاملThe effect of changing juvenile nutritional conditions and compensatory growth on life history traits in a field cricket, Gryllus texensis
An organism’s juvenile environment can have significant effects on its adult phenotype. If an animal grows up in a resource-poor environment, but the conditions improve, the organism can compensate for its reduced development. Although compensation is beneficial, a fast growth rate can be costly. To test for evidence of compensatory growth and its costs in Gyllus texensis crickets, I raised cri...
متن کاملEmbryonic development of the cricket Gryllus bimaculatus.
Extensive research into Drosophila melanogaster embryogenesis has improved our understanding of insect developmental mechanisms. However, Drosophila development is thought to be highly divergent from that of the ancestral insect and arthropod in many respects. We therefore need alternative models for arthopod development that are likely to be more representative of basally-branching clades. The...
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ژورنال
عنوان ژورنال: Functional Ecology
سال: 2011
ISSN: 0269-8463
DOI: 10.1111/j.1365-2435.2011.01939.x