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首页> 外文期刊>Journal of Molluscan Studies >On the systematics and ecology of two new species of Provanna (Gastropoda: Provannidae) from deep-sea hydrothermal vents in the Caribbean Sea and Southern Ocean
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On the systematics and ecology of two new species of Provanna (Gastropoda: Provannidae) from deep-sea hydrothermal vents in the Caribbean Sea and Southern Ocean

机译：在加勒比海和南海海河深海水热通风口的两种新型Provanna（Gastropoda：Provannidae）的系统学与生态学

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摘要

The recent discovery and exploration of deep-sea hydrothermal vent fields in the Mid-Cayman Spreading Centre, Caribbean Sea (Beebe Vent Field, 4956-4972 m depth) and the East Scotia Ridge, Southern Ocean T2 and E9 vent fields, 2394-2641 m depth) have yielded extensive collections of two new provannid species, Pronanna beebei n. sp. and P cooki n. sp. Morphological and molecular taxonomy (530 bp of the mitochondrial cytochrome c oxidase subunit I gene) confirm P beebei n. sp. and P cooki n. sp. as distinct species; these species are formally described, and details are provided of their distribution, habitat and species associations. Bayesian and maximum likelihood analyses support the placement of P beebei n. sp. and P cooki n. sp within the genus Pronanna and show that these two new deep-sea species form a well-supported Glade with the abyssal West Pacific P cingulata. Pronanna beebei n. sp. and P cooki n. sp. represent the first records of Pronanna from hydrothermal vents in the Caribbean Sea and Southern Ocean, respectively, and extend the known geographic range of the genus. For the first time, intraspecific phenotypic variation in size and sculpture has been reported for Pronanna. At the East Scotia Ridge, shell-size frequency distributions and median shell size of P cooki n. sp. varied significantly between the E2 and E9 vent fields, as well as between diffuse flow and high-temperature venting habitats within each field. The variation in shell sculpture in relation to habitat was also observed in P cooki n. sp.
机译：最近开曼蔓延中心深海水热通风口的发现与探索，加勒比海（BEEBE通风口，4956-4972米深度）和东苏格兰岭，南海T2和E9通风口，2394-2641 M深度）产生了广泛的两种新的ProAnnid种类，Ponna Beebei n。 SP。和p cooki n。 SP。形态学和分子分类物（530bp的线粒体细胞色素c氧化酶亚基I基因）证实了p beebei n。 SP。和p cooki n。 SP。作为截然不同的物种;将这些物种正式描述，并提供了它们的分布，栖息地和物种关联的细节。贝叶斯和最大可能性分析支持P beebei n的位置。 SP。和p cooki n。在原始语言中的SP并表明这两种新的深海物种形成了一款良好支持的沼泽地，与Abysal West Pacific P Cingulata。 Pronna beebei n。 SP。和p cooki n。 SP。代表分别从加勒比海和南海海洋中的热门通风口的第一个记录，并延长了该属的已知地理范围。首次出版了第一次，据报道，尺寸和雕塑的内型变异是出版的。在东苏格兰山脊，壳体频率分布和P cooki n的中位壳尺寸。 SP。在E2和E9排气场之间显着变化，以及每个场内的漫射流和高温通风栖息地之间。在P cooki n中也观察到与栖息地相关的壳雕塑的变化。 SP。

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