...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Genetic diversity of Nymphon (Arthropoda: Pycnogonida: Nymphonidae) along the Antarctic Peninsula with a focus on Nymphon australe Hodgson 1902
【24h】

Genetic diversity of Nymphon (Arthropoda: Pycnogonida: Nymphonidae) along the Antarctic Peninsula with a focus on Nymphon australe Hodgson 1902

机译：Nymphon（节肢动物：Pycnogonida：Nymphonidae）在南极半岛的遗传多样性，着眼于Nymphon australe Hodgson 1902

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

Sea spiders are conspicuous, and often abundant, members of the Antarctic benthic community. Nymphonidae (Pycnogonida) in Southern Ocean waters comprise over 240 species which are often difficult to assign due to their intraspecific 'highly variable' morphology. In particular, Nymphon australe, the numerically dominant species in Antarctic waters is known to have a high level of phenotypic variation in external morphology and is also reported to have a circumpolar distribution. Circumpo-larity seems contradictory to the pycnogonid's brooding lifestyle and presumably limited dispersal. Here we examine the genetic diversity of several Nymphon species collected in the Antarctic Peninsular region. Concomitantly, we assess the genetic structure of N. australe to gain insight into Nymphon dispersal capacity. Cytochrome c oxidase subunit I (COI) and 16S ribosomal gene data suggest a recent common history and/or recent gene-flow of N. australe populations across nearly 800 km of the Antarctic Peninsula. Furthermore, these data support that the Antarctic Peninsula region may hold two previously unrecognized species of Nymphon.
机译：海蜘蛛是南极底栖动物群落的显着成员，通常数量很多。南部海洋水域的ym科（Pycnogonida）包含240多个物种，由于它们的种内“高度可变”形态，它们通常很难分配。特别是南极水域中占主导地位的物种Nymphon australe，在外部形态上具有高水平的表型变异，并且据报道也具有绕极分布。圆滑的行为似乎与侏儒的育成生活是矛盾的，大概是有限的传播。在这里，我们检查了在南极半岛地区收集的几种Nymphon物种的遗传多样性。同时，我们评估N.australe的遗传结构，以了解Nymphon的扩散能力。细胞色素C氧化酶亚基I（COI）和16S核糖体基因数据表明，南极半岛猪笼草跨过近800 km的近代史和/或近代基因流。此外，这些数据支持南极半岛地区可能拥有两种以前无法识别的Nymphon。

著录项

相似文献

  • 外文文献
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