...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Global Ecology and Conservation >A methodological approach to the genetic identification of native Brook Trout (Salvelinus fontinalis) populations for conservation purposes
【24h】

A methodological approach to the genetic identification of native Brook Trout (Salvelinus fontinalis) populations for conservation purposes

机译：为了保护目的，对本地布鲁克鳟鱼（Salvelinus fontinalis）种群进行遗传鉴定的方法学方法

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

As biodiversity is transformed on a global scale, identifying and protecting populations unaffected by habitat disturbances is essential to ensuring natural genetic diversity is not irretrievably lost. Furthermore, knowledge of the interactions between endemic populations and human-introduced conspecifics is imperative to the creation of management strategies that conserve and enhance population viability. In this study, these issues were examined for Brook Trout ( Salvelinus fontinalis ) populations from the Northeastern United States through the characterization of the spatial genetic structure of over 2000 wild fish, collected from 83 different sampling locations, and encompassing 18 individual watersheds. Population genetic analyses of microsatellite data at 13 loci demonstrate that, despite centuries-long stocking practices, roughly half of the populations examined exhibit genetic structure consistent with native origins. In addition, when examining the populations that revealed influence from stocked con-specifics, only a limited proportion of ancestry was attributed to stocked fish in the majority of cases. The methodological approach presented in this study for identifying native populations demonstrated strong population subdivision within and among populations, watersheds, and drainage basins. These findings are consistent with past inferences regarding native population structure of cold-water fish species and represent a detailed accounting of the remaining Brook Trout populations still intact in their native waters. Furthermore, the extent of such populations greatly exceeds what had been previously identified and prioritized as ‘heritage’ based on stocking history. The methods and data presented here may serve as an important tool to inform diversity maintenance, species recovery planning, and biodiversity conservation in this and other genetically unique and historically important native species.
机译：随着生物多样性在全球范围内发生变化，确定和保护不受生境干扰影响的种群对于确保不会自然损失生物遗传多样性至关重要。此外，了解地方性种群与人类引入的特定物种之间的相互作用对于建立保护和增强种群生存力的管理策略至关重要。在这项研究中，通过表征从2000个野生鱼类的空间遗传结构特征，对来自美国东北部的布鲁克鳟（Salvelinus fontinalis）种群进行了研究，这些种群是从83个不同的采样地点收集的，涵盖18个单独的流域。对13个位点的微卫星数据进行的群体遗传分析表明，尽管进行了数个世纪的放养实践，但仍有大约一半的受调查人群表现出与本地血统一致的遗传结构。此外，在检查显示种群有种的影响的种群时，在大多数情况下，只有有限比例的血统归因于种群中的鱼类。在这项研究中提出的用于识别本地人口的方法论方法证明了在人口，流域和流域内部和之中的强大的人口细分。这些发现与过去有关冷水鱼类本地种群结构的推论一致，并且代表了仍保留在其本地水中的布鲁克鳟鱼剩余种群的详细说明。此外，此类种群的数量大大超过了以前根据存货历史确定并优先确定为“遗产”的数量。此处介绍的方法和数据可能会作为重要工具，为该物种和其他遗传上独特且在历史上重要的本地物种的生物多样性维护，物种恢复计划和生物多样性保护提供信息。

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