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首页> 外文期刊>Polar biology >Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica)
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Filling biodiversity gaps: benthic hydroids from the Bellingshausen Sea (Antarctica)

机译：填补生物多样性空白：贝灵斯豪森海（南极洲）的底栖水体

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摘要

The Bellingshausen Sea constitutes the third largest sea in the Southern Ocean, though it is widely rec-ognized as one of the less-studied Antarctic areas. To reduce this lack of knowledge, a survey to study the biodi-versity of its marine benthic communities was carried out during the Bentart 2003 and Bentart 2006 Spanish Antarc-tic expeditions. The study of the hydroid collection has pro-vided 27 species, belonging to ten families and 15 genera. Twenty-one out of the 27 species constitute new records for the Bellingshausen Sea, raising the total number of known species to 37, as also do nine out of the 15 genera. Candela-brum penola, Lafoea annulata, and Staurotheca juncea are recorded for the second time. Most species belong to Leptothecata. Sertulariidae with 13 species (48%) is by far the most speciose family, and Symplectoscyphus with seven species (26%), including S. bellingshauseni sp. nov. and S. hesperides sp. nov., the most diverse genus. Considering the whole benthic hydroid fauna of the Bellingshausen Sea, 18 species (69%) are endemic to Antarctic waters, either with a circum-Antarctic (12 species, 46%) or West Antarc-tic (6 species, 23%) distribution, 23 (88%) are restricted to Antarctic or Antarctic/sub-Antarctic waters, and only three species have a wider distribution. Bellingshausen Sea hydroid fauna is composed of a relatively high diversity of typical representatives of the Antarctic benthic hydroid fauna, though with a surprisingly low representation of some of the most diverse and widespread Antarctic genera (Oswaldella and Schizotricha), what could be related to the fact that its shelf-inhabiting hydroid fauna remains practi-cally unknown.
机译：贝林斯豪森海是南部海洋中的第三大海域，尽管它被广泛认为是研究较少的南极地区之一。为了减少这种知识的缺乏，在Bentart 2003和Bentart 2006西班牙南极探险期间进行了一项调查其海洋底栖生物群落生物多样性的调查。对水合物收集的研究提供了27种，属于10个科和15属。 27种中的21种构成了贝灵豪森海的新记录，使已知种的总数增加到37种，而15种中的9种也增加了。第二次记录了坎德拉-布鲁诺（Candela-brum penola），无花果（Lafoea annulata）和芥菜（Staurotheca juncea）。大多数种类属于钩端藤。 Sertulariidae有13种（48％）是迄今为止最丰富的科，Symplectoscyphus有7种（26％），包括S. bellingshauseni sp.。十一月和S. hesperides sp。十一月，最多样化的属。考虑到贝灵斯豪森海的整个底栖水生动物群，南极水域特有的有18种（69％），分布有南极洲（12种，占46％）或南极西部（6种，占23％）， 23（88％）只限于南极或南极/亚南极水域，只有三个物种分布更广。贝林斯豪森海积水动物群由南极底栖水生动物的典型代表组成，具有较高的多样性，但在某些种类最多，分布最广泛的南极属（Oswaldella和Schizotricha）中却出奇的低，这可能与事实有关它的居住在架子上的水生动物在实践中仍然是未知的。

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