Moving to mate: the evolution of separate and combined sexes in multicellular organisms
Moving to mate: the evolution of separate and combined sexes in multicellular organisms
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DOI：
10.1111/j.1420-9101.2008.01524.x
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发表时间：
2008-05-01
影响因子：
2.1
通讯作者：
Jesson, L. K.
中科院分区：
文献类型：
--
作者：
Eppley, S. M.;Jesson, L. K.
哪些条件有利于雌雄同体或两性分离的进化？一个经典的假说认为，生物体在寻找配偶时的运动模式（如果有的话）应该会影响繁殖系统的进化。我们使用已发表的遗传学来重建多细胞生物中成体求偶效率和繁殖系统的进化变化。采用最大似然分析，我们发现，成年人的求偶效率的变化显着相关的变化，在育种系统，这一结果是强大的不确定性的遗传。这些数据提供了第一个统计支持，在广泛的分类群，为假设，繁殖系统和择偶效率没有独立进化。我们讨论了我们的结果与其他因果关系的因素，如避免近亲繁殖和性专业化，可能会影响育种系统的进化。
Which conditions favour the evolution of hermaphroditism or separate sexes? One classical hypothesis states that an organism's mode of locomotion (if any) when searching for a mate should influence breeding system evolution. We used published phylogenies to reconstruct evolutionary changes in adult mate-search efficiency and breeding systems among multicellular organisms. Employing maximum-likelihood analyses, we found that changes in adult mate-search efficiency are significantly correlated with changes in breeding system, and this result is robust to uncertainties in the phylogenies. These data provide the first statistical support, across a broad range of taxa, for the hypothesis that breeding systems and mate-search efficiency did not evolve independently. We discuss our results in context with other causal factors, such as inbreeding avoidance and sexual specialization, likely to affect breeding system evolution.