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首页> 外文期刊>Ecology and Evolution >Asymmetrical gene flow of the recently delisted passerine black‐capped vireo ( Vireo atricapilla ) indicates source‐sink dynamics in central Texas
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Asymmetrical gene flow of the recently delisted passerine black‐capped vireo ( Vireo atricapilla ) indicates source‐sink dynamics in central Texas

机译：最近被除名的雀形目黑冠病毒（Vireo atricapilla）的不对称基因流动表明得克萨斯州中部的源库动态

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Habitat fragmentation can produce metapopulations or source‐sink systems in which dispersal in crucial for population maintenance. Our objective was to investigate connectivity among black‐capped vireo ( Vireo atricapilla ) populations in tandem with a demographic study (Biological Conservation, 2016, 203, 108–118) to elucidate if central Texas populations act as a source‐sink system. We genotyped 343 individuals at 12 microsatellite loci to elucidate the movement ecology of the black‐capped vireo in central Texas surrounding Fort Hood; the largest and most stable breeding population of black‐capped vireos inhabit Fort Hood. To gain insight into gene flow among populations, we analyzed genetic differentiation, migration rates, number of migrants, and parentage. We found statistically significant, but low levels of genetic differentiation among several populations, suggesting some limited restriction to gene flow. Across approaches to estimate migration, we found consistent evidence for asymmetrical movement from Fort Hood to the other central Texas sites consistent with source‐sink dynamics. Our results are complementary to black‐capped vireo demographic studies done in tandem showing that portions of Fort Hood are acting as a source population to smaller central Texas populations.
机译：栖息地的碎片化可能会产生散居种群或源汇系统，其中分散对维持种群至关重要。我们的目标是通过人口统计学研究（Biological Conservation，2016，203，108-118）调查黑冠病毒种群之间的连通性，以阐明德克萨斯州中部种群是否充当源汇系统。我们对12个微卫星基因座上的343个人进行了基因分型，以阐明德克萨斯州中部胡德堡周围黑冠病毒的运动生态学。黑冠vi的最大和最稳定的繁殖种群居住在胡德堡。为了深入了解人群之间的基因流动，我们分析了遗传分化，迁移率，移民人数和父母身份。我们发现具有统计学意义，但几个人群之间的遗传分化水平较低，表明对基因流的限制有限。在估算迁移的各种方法中，我们发现了从胡德堡到得克萨斯州中部其他地点的非对称移动的一致证据，与源汇动态一致。我们的结果与串联进行的黑顶病毒人口统计学研究相辅相成，该研究表明，胡德堡的部分地区正在成为德克萨斯州中部较小人群的来源人群。

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