The Role of Despotism and Heritability in Determining Settlement Patterns in the Colonial Lesser Kestrel
The Role of Despotism and Heritability in Determining Settlement Patterns in the Colonial Lesser Kestrel
复制标题
专制主义和遗传力在决定殖民地小红隼定居模式中的作用
作者：
D. Serrano;J. Tella
Avian colony size variation is an evolutionary puzzle in terms of unequal fitness payoffs. We used a long‐term marked lesser kestrel (Falco naumanni) population, where individual fitness increases with colony size, to test whether subordinates are evicted despotically from the largest colonies. Yearlings were smaller and lighter, were more attacked than expected, and lost most disputes over nest holes with older birds. Agonistic interactions increased with colony size; consequently, most first breeders recruited in colonies smaller than those at which they first tried to settle. As expected when subordination is a transient state, birds dispersed to a larger colony as they got older even after breeding successfully. The population consequences of these behavioral processes were that the relative frequency of yearlings and first breeders decreased with colony size. At the same time, breeding colony size was repeatable within individuals, so we estimated the amount of heritable variation in this trait. Estimates of heritability derived from parent‐offspring and full‐sib analyses were consistently high (
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$$h^{2}=0.53$$
\end{document} ) when individuals reached asymptotic morphological values and presumably overcame subordinate transient states. Age‐related dominance asymmetries masked resemblance among relatives in colony size, but both phenomena seem to coexist in this population and explain a considerable proportion of colony size variation.
Avian colony size variation is an evolutionary puzzle in terms of unequal fitness payoffs. We used a long‐term marked lesser kestrel (Falco naumanni) population, where individual fitness increases with colony size, to test whether subordinates are evicted despotically from the largest colonies. Yearlings were smaller and lighter, were more attacked than expected, and lost most disputes over nest holes with older birds. Agonistic interactions increased with colony size; consequently, most first breeders recruited in colonies smaller than those at which they first tried to settle. As expected when subordination is a transient state, birds dispersed to a larger colony as they got older even after breeding successfully. The population consequences of these behavioral processes were that the relative frequency of yearlings and first breeders decreased with colony size. At the same time, breeding colony size was repeatable within individuals, so we estimated the amount of heritable variation in this trait. Estimates of heritability derived from parent‐offspring and full‐sib analyses were consistently high (
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\usepackage{amsbsy}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{bm}
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$$h^{2}=0.53$$
\end{document} ) when individuals reached asymptotic morphological values and presumably overcame subordinate transient states. Age‐related dominance asymmetries masked resemblance among relatives in colony size, but both phenomena seem to coexist in this population and explain a considerable proportion of colony size variation.
交叉饲养的雌性恒河猴与其亲生母亲在亲缘关系和攻击性方面的相似之处。
影响因子：
2.2
作者：
Maestripieri,Dario
通讯作者：
Maestripieri,Dario