A description of two new deep-sea nemerteans from North Pacific with reconsideration of the genus Oerstedia (Hoplonemertea, Oerstediidae)

IF 2.3 3区地球科学 Q2 OCEANOGRAPHY

Deep-sea Research Part Ii-topical Studies in Oceanography Pub Date : 2024-05-23 DOI:10.1016/j.dsr2.2024.105390

Alexei V. Chernyshev, Vasiliy G. Kuznetsov

{"title":"A description of two new deep-sea nemerteans from North Pacific with reconsideration of the genus Oerstedia (Hoplonemertea, Oerstediidae)","authors":"Alexei V. Chernyshev, Vasiliy G. Kuznetsov","doi":"10.1016/j.dsr2.2024.105390","DOIUrl":null,"url":null,"abstract":"<div>To date, a total of 30 nemertean species have been described from depths greater than 1000 m. All deep-sea species of the infraorder Oerstediina belong to the genera found at great depths only. A new species of the genus Oerstedia Quatrefages, 1846 (O. sashae sp. nov.), whose described species inhabit shallow waters, has been collected on the Emperor Seamounts from a depth of 1407 m. Oerstedia sashae sp. nov. differs from the other species of the genus by the lack of eyes. Another new species, Oerstedia sofiae sp. nov., which is very close to the symbiotic Cryptonemertes actinophila (Bürger, 1904), has been described from the Sea of Okhotsk, from a depth of 250–490 m. A phylogenetic analysis based on five gene markers (COI, 16 S, 18 S, 28 S, and histone H3) has shown that O. sashae sp. nov., O. sofiae sp. nov., and C. actinophila belong to clade Paroerstediella of the genus Oerstedia. Cryptonemertes actinophila is here proposed to be transferred to the genus Oerstedia. Oerstedia sofiae sp. nov. and O. actinophila comb. nov. differ from the other species of the genus by the red blood and a very short proboscis and rhynchocoel.</div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":"216 ","pages":"Article 105390"},"PeriodicalIF":2.3000,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Deep-sea Research Part Ii-topical Studies in Oceanography","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0967064524000341","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OCEANOGRAPHY","Score":null,"Total":0}

引用次数: 0

Abstract

To date, a total of 30 nemertean species have been described from depths greater than 1000 m. All deep-sea species of the infraorder Oerstediina belong to the genera found at great depths only. A new species of the genus Oerstedia Quatrefages, 1846 (O. sashae sp. nov.), whose described species inhabit shallow waters, has been collected on the Emperor Seamounts from a depth of 1407 m. Oerstedia sashae sp. nov. differs from the other species of the genus by the lack of eyes. Another new species, Oerstedia sofiae sp. nov., which is very close to the symbiotic Cryptonemertes actinophila (Bürger, 1904), has been described from the Sea of Okhotsk, from a depth of 250–490 m. A phylogenetic analysis based on five gene markers (COI, 16 S, 18 S, 28 S, and histone H3) has shown that O. sashae sp. nov., O. sofiae sp. nov., and C. actinophila belong to clade Paroerstediella of the genus Oerstedia. Cryptonemertes actinophila is here proposed to be transferred to the genus Oerstedia. Oerstedia sofiae sp. nov. and O. actinophila comb. nov. differ from the other species of the genus by the red blood and a very short proboscis and rhynchocoel.

查看原文本刊更多论文

描述来自北太平洋的两种新深海蝾螈，并重新考虑 Oerstedia 属（Hoplemertea, Oerstediidae)

Oerstediina 下目中的所有深海物种都属于仅在深海发现的属。Oerstedia sashae sp.nov.属的一个新种（O. sashae sp.nov.）是在皇帝海山（Emperor Seamounts）1407 米深处采集到的。基于五个基因标记（COI、16 S、18 S、28 S 和组蛋白 H3）的系统发育分析表明，O. sashae sp、和嗜放线虫属于 Oerstedia 属的 Paroerstediella 支系。这里建议将嗜放线隐杆线虫（Cryptonemertes actinophila）转入 Oerstedia 属。Oerstedia sofiae sp. nov.和 O. actinophila comb. nov.

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Deep-sea Research Part Ii-topical Studies in Oceanography 地学-海洋学

CiteScore

6.40

自引率

16.70%

发文量

115

审稿时长

3 months

期刊介绍： Deep-Sea Research Part II: Topical Studies in Oceanography publishes topical issues from the many international and interdisciplinary projects which are undertaken in oceanography. Besides these special issues from projects, the journal publishes collections of papers presented at conferences. The special issues regularly have electronic annexes of non-text material (numerical data, images, images, video, etc.) which are published with the special issues in ScienceDirect. Deep-Sea Research Part II was split off as a separate journal devoted to topical issues in 1993. Its companion journal Deep-Sea Research Part I: Oceanographic Research Papers, publishes the regular research papers in this area.