A new trochoidean gastropod (Vetigastropoda: Skeneidae) discovered from deep-sea hydrothermal vents in the Southern Ocean

A new trochoidean gastropod (Vetigastropoda: Skeneidae) discovered from deep-sea hydrothermal vents in the Southern Ocean
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在南大洋深海热液喷口发现一种新的轮轮腹足动物(Vetigastropoda:Skeneidae)

DOI:
10.1007/s12526-019-01005-2
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发表时间:
2019
影响因子:
1.6
通讯作者:
Linse Katrin
Linse Katrin
中科院分区:
环境科学与生态学3区
文献类型:
--
作者:
Chen Chong;Linse Katrin

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东斯科舍海脊 (ESR) 的热液喷口是南大洋第一个通过目视确认和调查的热液喷口。从 ESR 的 E2 和 E9 段的低扩散流排气位点回收了摆线蜗牛。分类学和系统研究表明,它是布鲁斯氏菌属中迄今为止科学未知的物种,而布鲁氏菌属显然是化学合成生态系统的特有种。该新种的特征是该属的尺寸较大(壳宽达5毫米),中心齿非常宽,水平基脊适度凸起,内缘齿轴上有一个突出的突起,本文将其描述为Bruceiella induratasp。十一月所描述的该属成员来自印度洋和太平洋,引起了人们对当前新物种的生物地理起源的兴趣。目前物种的最近亲是Bruceiella wareniOkutani, Hashimoto & Sasaki, 2004,来自中印度洋中脊Kairei喷口场,进一步表明了东斯科舍洋中脊与印度洋喷口动物群之间的密切关系,正如之前所指出的那样。
Hydrothermal vents at the East Scotia Ridge (ESR) were the first vents to be visually confirmed and surveyed in the Southern Ocean. A trochoid snail was recovered from low diffuse flow venting sites of both E2 and E9 segments of the ESR. Taxonomic and systematic investigations revealed it to be a species hitherto unknown to science in the skeneid genusBruceiella, which is apparently endemic to the chemosynthetic ecosystems. The new species is characterised by a large size for the genus (up to 5 mm shell width), a very broad central tooth with moderately raised horizontal basal ridge, inner marginal teeth with one single prominent protrusion on the shaft, and is described herein asBruceiella induratasp. nov. Described members of the genus are known from the Indian and Pacific oceans, drawing interest to the biogeographic origins of the present new species. Closest relative of the present species isBruceiella wareniOkutani, Hashimoto & Sasaki, 2004 from Kairei vent field, Central Indian Ridge, further indicating the close relationship between East Scotia Ridge and Indian Ocean vent fauna as has been previously suggested.
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