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首页> 美国卫生研究院文献>Proceedings of the Royal Society B: Biological Sciences >Female-biased dispersal in the monogamous mammal Crocidura russula: evidence from field data and microsatellite patterns.
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Female-biased dispersal in the monogamous mammal Crocidura russula: evidence from field data and microsatellite patterns.

机译：一夫一妻制的克鲁西鳄（Crocidura russula）中的女性偏向扩散：来自实地数据和微卫星模式的证据。

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摘要

We investigated dispersal patterns in the monogamous Crocidura russula, based both on direct field observations (mark-recapture data) and on genetic analyses (microsatellite loci). Natal dispersal was found to be low. Most juveniles settled within their natal territory or one immediately adjacent. Migration rate was estimated to two individuals per year and per population. The correlation between genetic and geographical distances over a 16 km transect implies that migration occurs over short ranges. Natal dispersal was restricted to first-litter juveniles weaned in early May; this result suggests a direct dependence of dispersal on reproductive opportunities. Natal dispersal was highly female biased, a pattern unusual among mammals. Its association with monogamy provides support for the resource-competition model of dispersal. Our results demonstrate that a state-biased dispersal can be directly inferred from microsatellite genotype distributions, which opens new perspectives for empirical studies in this area.
机译：我们基于直接的实地观察（标记捕获数据）和遗传分析（微卫星基因座）研究了一夫一妻制的罗氏杂种的分散模式。发现纳塔尔散布很低。大多数青少年定居在其本国领土内或紧邻的地方。估计每年和每个人口有两个人迁移。在16 km的样带上遗传距离和地理距离之间的相关性意味着迁移发生在短距离内。纳塔尔散播仅限于5月初断奶的初生仔。这一结果表明，传播直接依赖于生殖机会。纳塔尔散布是高度女性偏见的，这在哺乳动物中是异常的。它与一夫一妻制的联系为分散的资源竞争模型提供了支持。我们的结果表明，可以从微卫星基因型分布中直接推断出有状态偏差的扩散，这为该领域的实证研究提供了新的视角。

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