Holothuroidea of the Emperor Seamount Chain: Taxonomy, Morphology and Molecular Data.

IF 1.4 3区生物学 Q2 ZOOLOGY

Zoological Studies Pub Date : 2026-04-17 eCollection Date: 2026-01-01 DOI:10.6620/ZS.2026.65-15

Antonina Kremenetskaia, Zoya I Dudnik, Andrey V Gebruk

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Abstract

The present paper provides first data on the fauna of Holothuroidea of the Emperor Seamount Chain (ESC, northwestern Pacific). Samples were collected using ROV Comanche 18 from four guyots, Kinmei, Koko, Nintoku and Ojin, in 2019 and 2021 at depths from 750 to 2240 m during two cruises of RV Akademik M.A. Lavrentyev. Sixteen species were recognized. Orders Elasipodida and Synallactida were the most diverse. Here we provide morphological descriptions and molecular data on COI and 16S rRNA for nine species belonging to eight genera and also for three taxa identified to the family level. One genus and two species are described as new: Parvathuria dautovae gen. et sp. nov. and Peniagone koko sp. nov. Two representatives were assigned to the genus Hansenothuria; we discuss the phylogenetic position of this genus based on molecular data. Only one of the recorded taxa is known outside the Pacific Ocean. More than a half of the examined species has the closest genetic affinity to holothuroids from the Pacific, indicating predominantly local origin of the ESC holothuroid fauna.

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帝王海山链的全颌总科：分类、形态和分子资料。

本文首次报道了西北太平洋皇帝海山链holothuro总科的区系资料。2019年和2021年，在“Akademik M.A. Lavrentyev”号的两次巡航中，利用ROV Comanche 18从Kinmei、Koko、Nintoku和Ojin四个船舱采集了样本，深度为750至2240米。已确认的有16种。弹性足目和联足目种类最多。本文提供了隶属于8属的9个种和3个分类群的COI和16S rRNA的形态描述和分子数据。新增1属和2种：Parvathuria dautovae gen. et sp. 11和Peniagone koko sp. 11 . 2个代表归为Hansenothuria属；我们根据分子数据讨论了该属的系统发育位置。只有一种有记录的分类群是在太平洋以外已知的。超过一半的研究物种与来自太平洋的holothuids具有最密切的遗传亲缘关系，这表明ESC holothuids动物群主要来自当地。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Zoological Studies 生物-动物学

CiteScore

2.80

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Zoological Studies publishes original research papers in five major fields: Animal Behavior, Comparative Physiology, Evolution, Ecology, and Systematics and Biogeography. Manuscripts are welcome from around the world and must be written in English. When the manuscript concerns the use of animals or specimens in research, a statement must be included to the effect that the author(s) has adhered to the legal requirements of the country in which the work was carried out or to any institutional guidelines.