Larval Competition Reduces Body Condition in the Female Seed Beetle,Callosobruchus maculatus
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چکیده
منابع مشابه
Larval Competition Reduces Body Condition in the Female Seed Beetle, Callosobruchus maculatus
Early body condition may be important for adult behavior and fitness, and is impacted by a number of environmental conditions and biotic interactions. Reduced fecundity of adult females exposed to larval competition may be caused by reduced body condition or shifts in relative body composition, yet these mechanisms have not been well researched. Here, body mass, body size, scaled body mass inde...
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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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...
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The seed parasite Callosobruchus maculatus generally disperses eggs uniformly among seeds. We used cowpeas (Vigna unguiculata) of two class sizes (large and small) to test predictions based on a simple resource threshold model that females will distribute eggs among seeds in a manner that maximizes the amount of resources allocated to each offspring. When females were presented with multiple se...
متن کاملSexual conflict and correlated evolution between male persistence and female resistance traits in the seed beetle Callosobruchus maculatus.
Traumatic mating (or copulatory wounding) is an extreme form of sexual conflict whereby male genitalia physically harm females during mating. In such species females are expected to evolve counter-adaptations to reduce male-induced harm. Importantly, female counter-adaptations may include both genital and non-genital traits. In this study, we examine evolutionary associations between harmful ma...
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ژورنال
عنوان ژورنال: Journal of Insect Science
سال: 2012
ISSN: 1536-2442
DOI: 10.1673/031.012.3501