Asymmetrical reproductive character displacement in the house mouse
Asymmetrical reproductive character displacement in the house mouse
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DOI：
10.1111/j.1420-9101.2005.00944.x
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发表时间：
2005-11
影响因子：
2.1
通讯作者：
Carole M. Smadja;G. Ganem
中科院分区：
文献类型：
--
作者：
Carole M. Smadja;G. Ganem
我们的研究解决了两个亚种的家鼠，小家鼠和小家鼠在欧洲杂交，沿沿着的选择，对杂交是已知发生的生殖特性位移。基于多种群的方法，我们研究了这两个类群交配偏好差异的空间格局。配偶偏好显着高于在两个亚种的接触区比在异地，这表明生殖特征位移发生。此外，M. M.肌肉比M. M.这表明两者之间存在不对称的分歧。在对杂交选择的背景下，我们的研究结果可能会提供实证支持的假设，在parapatric杂交区的强化。我们讨论的因素，可以解释的不对称模式的分歧和可能产生的影响，一个单峰结构的维持交配前的分歧两个亚种之间。
Our study addressed reproductive character displacement between two subspecies of the house mouse, Mus musculus musculus and Mus musculus domesticus that hybridize in Europe along a zone where selection against hybridization is known to occur. Based on a multi‐population approach, we investigated spatial patterns of divergence of mate preference in the two taxa. Mate preference was significantly higher in the contact zone than in allopatry in both subspecies, suggesting that reproductive character displacement occurs. Moreover, patterns of preference were stronger in M. m. musculus than in M. m. domesticus, indicating an asymmetrical divergence between the two. In the context of selection against hybridization, our results may provide empirical support for the hypothesis of reinforcement in a parapatric hybrid zone. We discuss factors that could explain the asymmetrical pattern of divergence and the possible impact of a unimodal structure on the maintenance of premating divergence between the two subspecies.