COPULATING WITH MULTIPLE MATES ENHANCES FEMALE FECUNDITY BUT NOT EGG-TO-ADULT SURVIVAL IN THE BRUCHID BEETLE CALLOSOBRUCHUS MACULATUS
نویسندگان
چکیده
منابع مشابه
Why Do Female Callosobruchus maculatus Kick Their Mates?
Sexual conflict is now recognised as an important driver of sexual trait evolution. However, due to their variable outcomes and effects on other fitness components, the detection of sexual conflicts on individual traits can be complicated. This difficulty is exemplified in the beetle Callosobruchus maculatus, where longer matings increase the size of nutritious ejaculates but simultaneously red...
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In insects and many other organisms, males can provide considerable nutrients to females via ejaculates, spermatophores or nuptial gifts (Thornhill 1976; Thornhill & Alcock 1983; Gwynne 1997). These nutritive contributions can impact an animal’s life-history and reproductive strategies (Trivers 1972; Dewsbury 1982) by influencing female fecundity, offspring size or quality, female mating behavi...
متن کاملEgg-Dumping Behavior Is Not Correlated With Wider Host Acceptance in the Seed Beetle Callosobruchus maculatus (Coleoptera: Chrysomelidae: Bruchinae)
If typical host plants are absent, some herbivorous insects “dump” eggs on unsuitable substrates, even though this can cause complete larval mortality and reduced maternal life span. In the seedbeetleCallosobruchusmaculatus (F.) (Coleoptera:Chrysomelidae: Bruchinae), the tendency to dump eggs varies genetically both within and between populations. A previous study hypothesized that egg-dumping ...
متن کاملRNase reverses segment sequence in the anterior of a beetle egg (Callosobruchus maculatus, Coleoptera).
The genetic regulation of anterior-posterior segment pattern development has been elucidated in detail for Drosophila, but it is not canonical for insects. A surprising diversity of regulatory mechanisms is being uncovered not only between insect orders, but also within the order of the Diptera. The question is whether the same diversity of regulatory mechanisms exists within other insect order...
متن کاملCondition dependence of male and female genital structures in the seed beetle Callosobruchus maculatus (Coleoptera: Bruchidae).
Theory predicts that costly secondary sexual traits will evolve heightened condition dependence, and many studies have reported strong condition dependence of signal and weapon traits in a variety of species. However, although genital structures often play key roles in intersexual interactions and appear to be subject to sexual or sexually antagonistic selection, few studies have examined the c...
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ژورنال
عنوان ژورنال: Evolution
سال: 2000
ISSN: 0014-3820,1558-5646
DOI: 10.1111/j.0014-3820.2000.tb01259.x