• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Heredity >Impact of population expansion on genetic diversity and structure of river otters (Lontra canadensis) in central North America
【24h】

Impact of population expansion on genetic diversity and structure of river otters (Lontra canadensis) in central North America

机译：人口增加对北美中部水獭（Lontra canadensis）遗传多样性和结构的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Populations of North American river otters (Lontra canadensis) declined throughout large portions of the continent during the early 1900s due to habitat degradation and unregulated trapping. River otters had been extirpated in North Dakota (ND), but the Red River Valley has since been recolonized, with potential source populations including the neighboring states of Minnesota or South Dakota, or the Canadian province of Manitoba (MB). We genotyped 9 microsatellite loci in 121 samples to determine the source population of river otters in the Red River Valley of ND, as well as to assess population structure and diversity of river otters in central North America. Overall, genetic diversity was high, with an average observed heterozygosity of 0.58. Genetic differentiation was low (FST 0.05) between river otters in ND and those of Minnesota, suggesting that eastern ND was recolonized by river otters from Minnesota. River otters from MB were genetically distinct from all other sampled populations. Low genetic differentiation (FST = 0.044) between South Dakota and Louisiana (LA) suggested that reintroductions using LA stock were successful. The genetic distinctiveness of river otters from different geographic regions should be considered when deciding on source populations for future translocations.
机译：1900年代初，由于栖息地退化和不受管制的诱捕，整个北美大部分地区的北美水獭（Lontra canadensis）种群减少。在北达科他州（北达科他州）已经灭绝了水獭，但此后红河谷已被重新定殖，潜在的水源种群包括邻近的明尼苏达州或南达科他州，或加拿大的曼尼托巴省（MB）。我们对121个样本中的9个微卫星基因座进行了基因分型，以确定北达科他州红河谷中水獭的来源种群，并评估北美中部水獭的种群结构和多样性。总体而言，遗传多样性很高，平均杂合度为0.58。北达科他州和明尼苏达州的水獭之间的遗传分化很低（FST <0.05），这表明北达拉斯东部的水獭已被明尼苏达州的水獭重新定殖。 MB的水獭在遗传上与所有其他采样种群不同。南达科他州和路易斯安那州（LA）之间的遗传分化程度较低（FST = 0.044），表明使用LA种质成功导入。在决定未来易位的来源种群时，应考虑不同地理区域的水獭的遗传特征。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号