• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>SpringerPlus >Genetic fragmentation in India’s third longest river system the Narmada
【2h】

Genetic fragmentation in India’s third longest river system the Narmada

机译：印度第三长河流系统Narmada的基因片段化

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

India’s third longest river, the Narmada, is studied here for the potential effects on native fish populations of river fragmentation due to various barriers including dams and a waterfall. The species we studied include a cyprinid fish, Catla catla, and a mastacembelid, Mastacembelus armatus, both of which are found in the Narmada. Our goal was to use DNA sequence information from the D-loop region of the mitochondrial DNA to explore how this fragmentation could impact the genetic structure of these fish populations. Our results clearly show that these barriers can contribute to the fragmentation of the genetic structure of these fish communities, Furthermore, these barriers enhance the effects of natural isolation by distance and the asymmetry of dispersal flows. This may be a slow process, but it can create significant isolation and result in genetic disparity. In particular, populations furthest upstream having low migration rates could be even more subject to genetic impoverishment. This study serves as a first report of its kind for a river system on the Indian subcontinent. The results of this study also emphasize the need for appropriate attention towards the creation of fish passages across the dams and weirs that could help in maintaining biodiversity.Electronic supplementary materialThe online version of this article (doi:10.1186/2193-1801-3-385) contains supplementary material, which is available to authorized users.
机译：此处研究了印度第三大河流纳尔默达河（Narmada），研究由于大坝和瀑布等各种障碍对河流鱼类分裂造成的潜在影响。我们研究的物种包括塞浦路斯鱼类Catla catla和a科动物Mastacembelus armatus，它们都在Narmada中发现。我们的目标是利用来自线粒体DNA D环区域的DNA序列信息来探索这种片段化如何影响这些鱼类种群的遗传结构。我们的结果清楚地表明，这些障碍可能导致这些鱼类群落遗传结构的碎片化。此外，这些障碍通过距离和分散流的不对称性增强了自然隔离的效果。这可能是一个缓慢的过程，但会造成明显的隔离并导致遗传差异。特别是，上游最远，迁移率较低的人群可能更容易遭受遗传贫困。这项研究是印度次大陆河流系统的同类报道。这项研究的结果还强调，需要适当注意跨大坝和堰的鱼类通道的建立，以帮助维护生物多样性。电子补充材料本文的在线版本（doi：10.1186 / 2193-1801-3-385 ）包含补充材料，授权用户可以使用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

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