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首页> 外文期刊>Polar biology >Brittle stars from Southern Ocean (Echinodermata: Ophiuroidea)
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Brittle stars from Southern Ocean (Echinodermata: Ophiuroidea)

机译：来自南大洋的脆性恒星（棘皮动物：蛇形纲）

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摘要

The present biogeographic study on the ophi-uroid fauna from the Southern Ocean (SO) contains an updated checklist, based on a compilation of all the published information provided for the Antarctic and sub-Antarctic regions as well as the information available in SCAR-MarBIN database. Faunal composition and geographical and bathymetric distribution are included. So far, 219 species have been recorded, of which 126 are endemic to the SO, 76 are exclusive to Antarctic waters, and 30 are exclusive to sub-Antarctic waters. This study corroborated the circumpolar and eurybathic character of the ophiuroid fauna of the SO, but some differences are discussed when considering shelf and deep-sea fauna in the whole SO, or in the Antarctic and sub-Antarctic regions separately. The biogeographic affinities of 17 areas considered in the SO are revised, based on a presence/absence datamatrix of the 219 species. This similarity analysis shows three main groups, two of them including sub-Antarctic areas and one for Antarctic areas. The faunal movement patterns between the main geographical connections have been based on historical site records of each species. These movements have a level of faunal exchange that exceeds that of other Antarctic benthic groups. Such movements are mainly from Antarctic and sub-Antarctic regions to the subtropical waters of South America, and from New Zealand and southern Australian waters to sub-Antarctic areas. In this context, the origin of the ophiuroid Antarctic fauna is discussed.
机译：目前对来自南大洋（SO）的类鸦片类动物的生物地理研究包含一个更新的清单，该清单基于为南极和次南极地区提供的所有已发布信息以及SCAR-MarBIN中可用的信息的汇总数据库。动物的成分以及地理和测深分布都包括在内。迄今为止，已经记录了219种，其中SO特有的126种，南极水域专有的76种，南极水域专有的30种。这项研究证实了SO的蛇形类动物的绕极和eurybathic特征，但是在考虑整个SO或分别在南极和南极地区的陆架和深海动物时，讨论了一些差异。根据219种的存在/不存在数据矩阵，修订了SO中考虑的17个区域的生物地理亲和力。这种相似性分析显示了三个主要组，其中两个包括南极次区域，一个用于南极地区。主要地理联系之间的动物运动方式是基于每个物种的历史遗址记录。这些运动的动植物交流水平超过了其他南极底栖动物群。这种运动主要从南极和南极洲地区到南美的亚热带水域，以及从新西兰和澳大利亚南部水域到南极洲地区。在这种情况下，讨论了蛇形南极动物区系的起源。

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