Mammalian sperm and oviducts are sexually selected: evidence for co-evolution
Mammalian sperm and oviducts are sexually selected: evidence for co-evolution
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DOI：
10.1111/j.1469-7998.2006.00173.x
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发表时间：
2006-12-01
影响因子：
2
通讯作者：
Dixson, A. F.
中科院分区：
文献类型：
--
作者：
Anderson, M. J.;Dixson, A. S.;Dixson, A. F.
输卵管长度进行了测量，在48种代表33属的哺乳动物，以检查女性的形态和精子竞争的发生，由于与多个男性交配之间的可能关系。多元回归分析表明，输卵管长度的残差与睾丸重量的残差和精子中段体积的研究属和种呈正相关。这些相关性仍然显着的应用程序后，独立对比的比较分析，以控制可能的系统发育偏差的数据集。这些结果表明，性选择（与精子竞争和隐性雌性选择有关）影响了哺乳动物输卵管长度、睾丸大小和精子形态的共同进化。
Oviduct length was measured in 48 species representing 33 genera of mammals in order to examine possible relationships between female morphology and the occurrence of sperm competition due to matings with multiple males. Multiple regression analyses revealed that residuals of oviduct length were positively correlated both with residuals of testes weight and with sperm midpiece volume in the genera and species studied. These correlations remained significant after application of comparative analysis of independent contrasts to control for possible phylogenetic biases in the data set. These results indicate that sexual selection (relating to sperm competition and cryptic female choice) has influenced co-evolution of oviduct length, testes size and sperm morphology in mammals.