A new peltospirid snail (Gastropoda: Neomphalida) adds to the unique biodiversity of Longqi vent field, Southwest Indian Ridge
A new peltospirid snail (Gastropoda: Neomphalida) adds to the unique biodiversity of Longqi vent field, Southwest Indian Ridge
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DOI：
10.1080/00222933.2021.1923851
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发表时间：
2021-04
影响因子：
0.8
通讯作者：
Chong Chen;Y. Han;J. Copley;Yadong Zhou
中科院分区：
文献类型：
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作者：
Chong Chen;Y. Han;J. Copley;Yadong Zhou
摘要 与太平洋和大西洋的深海热液喷口相比，印度洋深海热液喷口的生物多样性仍然很缺乏。尽管龙崎热液喷口场是超慢速扩张的西南印度洋脊上勘探最广泛的热液喷口场，但它仍然是新发现的来源。在这里，我们报告并正式描述了龙旗的一种新的 peltospirid 蜗牛 – Lirapex felix sp。十一月仅从两个标本中得知，它与其他命名的 Lirapex 物种的不同之处在于其尖顶凹陷且体螺上没有松动的线圈。对外部解剖结构和齿根特征的检查与其在 Lirapex 中的位置一致，这也得到了使用线粒体细胞色素 c 氧化酶 I (COI) 基因的条形码片段重建的分子系统发育的支持。这是已知栖息在龙旗田的第五种蜗牛，其中三种（包括Lirapex felix sp. nov.）在其他地方都没有发现过。越来越多的证据表明，龙旗气田代表了印度洋喷口中生物地理上独特的地点。 Lirapex felix sp 的发现。十一月增加了龙旗油田独特的生物多样性，鉴于潜在的深海采矿，对保护具有重要意义。这项工作在 ZooBank 中注册：urn:lsid:zoobank.org:pub:3B892762-2110-4A1E-A80D-1779CBEC5EB3
ABSTRACT The biodiversity of deep-sea hydrothermal vents in the Indian Ocean remains poorly characterised compared with that of their Pacific and Atlantic counterparts. Although the Longqi hydrothermal vent field is the most extensively explored vent site on the ultra-slow-spreading Southwest Indian Ridge, it is still a source of new discoveries. Here, we report and formally describe a new peltospirid snail from Longqi – Lirapex felix sp. nov. Known from only two specimens, it differs from other named Lirapex species by a depressed spire and the lack of coil loosening on the body whorl. Examinations of the external anatomy and radular characteristics agree with its placement in Lirapex, which is also supported by a molecular phylogeny reconstructed using the barcoding fragment of the mitochondrial cytochrome c oxidase I (COI) gene. This is the fifth peltospirid snail known to inhabit the Longqi field, three of which (including Lirapex felix sp. nov.) have been found nowhere else. There is growing evidence that the Longqi field represents a biogeographically unique site among Indian Ocean vents. The discovery of Lirapex felix sp. nov. adds to the unique biodiversity of Longqi field, with implications for conservation in the light of potential deep-sea mining. This work is registered in ZooBank under: urn:lsid:zoobank.org:pub:3B892762-2110-4A1E-A80D-1779CBEC5EB3