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雄性豆象交配持续时间与寿命之间的负表型和遗传关联。

Negative phenotypic and genetic associations between copulation duration and longevity in male seed beetles.

作者信息

Brown E A, Gay L, Vasudev R, Tregenza T, Eady P E, Hosken D J

机构信息

Centre for Ecology and Conservation, University of Exeter, Cornwall Campus, Tremough, Penryn, UK.

出版信息

Heredity (Edinb). 2009 Oct;103(4):340-5. doi: 10.1038/hdy.2009.80. Epub 2009 Jul 29.

DOI:10.1038/hdy.2009.80
PMID:19639006
Abstract

Reproduction can be costly and is predicted to trade-off against other characters. However, while these trade-offs are well documented for females, there has been less focus on aspects of male reproduction. Furthermore, those studies that have looked at males typically only investigate phenotypic associations, with the underlying genetics often ignored. Here, we report on phenotypic and genetic trade-offs in male reproductive effort in the seed beetle, Callosobruchus maculatus. We find that the duration of a male's first copulation is negatively associated with subsequent male survival, phenotypically and genetically. Our results are consistent with life-history theory and suggest that like females, males trade-off reproductive effort against longevity.

摘要

繁殖可能代价高昂,并且预计会与其他特征进行权衡。然而,虽然这些权衡在雌性中已有充分记录,但对雄性繁殖方面的关注较少。此外,那些研究雄性的研究通常只调查表型关联,而常常忽略潜在的遗传学。在此,我们报告了豆象Callosobruchus maculatus雄性繁殖努力中的表型和遗传权衡。我们发现,雄性首次交配的持续时间与随后的雄性存活在表型和遗传上呈负相关。我们的结果与生活史理论一致,表明与雌性一样,雄性在繁殖努力和寿命之间进行权衡。

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