• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Evidence for a role of bathymetry and emergence in speciation in the genus Glycera (Glyceridae, Polychaeta) from the deep Eastern Weddell Sea
【24h】

Evidence for a role of bathymetry and emergence in speciation in the genus Glycera (Glyceridae, Polychaeta) from the deep Eastern Weddell Sea

机译：在东部韦德海深部的甘油属（Glyceridae，Polychaeta）中，测深法和出现在物种形成中的作用的证据

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

Polychaetes in the Southern Ocean are often thought to have wide distribution ranges on a horizontal and vertical scale. Here, this theory is tested for specimens commonly identified as the widely distributed glycerid Glycera kerguelensis using two molecular markers, the mitochondrial cytochrome oxidase c subunit I (COI) and the nuclear 28S rDNA. Identical morphospecies of three "populations" from three different habitats and two depth zones (abyssal plain 5,300 m, continental slope 2,000 m, sea mountain plateau 2,000 m) are compared. High genetic distances suggest the existence of three clades representing distinct species, identifying the investigated specimens as a complex comprising cryptic species with vertically restricted distribution. Two clades were found in sympatry on the Atka Bay slope in 2,000 m depth, one of these also found in similar depth on the plateau of the sea mountain Maud Rise. The third clade was limited to the abyssal plains (5,300 m) indicating the strong role of depth in the distribution of clades, possibly in conjunction with prevailing current systems. Evolution of the different clades is suggested to have resulted from a single emergence event with the origin of clades lying in the abyss.
机译：人们通常认为，南洋的多毛cha在水平和垂直方向上分布较广。在这里，使用两种分子标记，即线粒体细胞色素氧化酶c亚基I（COI）和核28S rDNA，对通常被认为是广泛分布的甘油甘油鼠的标本进行了测试。比较了来自三个不同栖息地和两个深度区域（深海平原5,300 m，大陆坡2,000 m，海山高原2,000 m）的三个“种群”的相同形态学。较高的遗传距离表明存在代表不同物种的三个进化枝，从而将研究标本鉴定为由具有垂直限制分布的隐性物种组成的复合体。在阿特卡湾斜坡上的共生物中发现了两个进化枝，深度为2,000 m，其中之一也出现在海山毛德里斯高原的相似深度处。第三个进化枝仅限于深海平原（5,300 m），表明深度在进化枝分布中的重要作用，可能与当前流行的系统结合在一起。据推测，不同进化枝的进化是由于单个进化事件造成的，进化枝的起源位于深渊。

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