精子竞争作为驯化过程中被低估的一个因素。
Sperm competition as an under-appreciated factor in domestication.
机构信息
Department of Archaeology, Classics and Egyptology, University of Liverpool, Liverpool L69 7WZ, UK
School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool L3 3AF, UK.
出版信息
Biol Lett. 2018 Mar;14(3). doi: 10.1098/rsbl.2018.0043.
Humans created an environment that increased selective pressures on subgroups of those species that became domestic. We propose that the domestication process may in some cases have been facilitated by changes in mating behaviour and resultant sperm competition. By adapting to sperm competition, proto-domestic animals could potentially have outcompeted their wild counterparts in human-constructed niches. This could have contributed to the restriction of gene flow between the proto-domesticates and their wild counterparts, thereby promoting the fixation of other domestication characteristics. Further to this novel perspective for domestication, we emphasize the general potential of postcopulatory sexual selection in the restriction of gene flow between populations, and urge more studies.
人类创造了一个环境，增加了那些成为家养动物的物种亚群的选择压力。我们提出，交配行为的改变和由此产生的精子竞争可能在某些情况下促进了驯化过程。通过适应精子竞争，原始家养动物可能在人类构建的小生境中胜过它们的野生同类。这可能导致原始家养动物与其野生同类之间的基因流受到限制，从而促进了其他驯化特征的固定。除了这一新颖的驯化观点，我们还强调了交配后性选择在限制种群间基因流动方面的普遍潜力，并敦促进行更多的研究。
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