{"title":"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)","authors":"Alexei V. Chernyshev, Vasiliy G. Kuznetsov","doi":"10.1016/j.dsr2.2024.105390","DOIUrl":null,"url":null,"abstract":"<div><p>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 <em>Oerstedia</em> Quatrefages, 1846 (<em>O. sashae</em> sp. nov.), whose described species inhabit shallow waters, has been collected on the Emperor Seamounts from a depth of 1407 m. <em>Oerstedia sashae</em> sp. nov. differs from the other species of the genus by the lack of eyes. Another new species, <em>Oerstedia sofiae</em> sp. nov., which is very close to the symbiotic <em>Cryptonemertes actinophila</em> (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 <em>O. sashae</em> sp. nov., <em>O. sofiae</em> sp. nov., and <em>C. actinophila</em> belong to clade <em>Paroerstediella</em> of the genus <em>Oerstedia</em>. <em>Cryptonemertes actinophila</em> is here proposed to be transferred to the genus <em>Oerstedia</em>. <em>Oerstedia sofiae</em> sp. nov. and <em>O. actinophila</em> comb. nov. differ from the other species of the genus by the red blood and a very short proboscis and rhynchocoel.</p></div>","PeriodicalId":11120,"journal":{"name":"Deep-sea Research Part Ii-topical Studies in Oceanography","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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><p>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 <em>Oerstedia</em> Quatrefages, 1846 (<em>O. sashae</em> sp. nov.), whose described species inhabit shallow waters, has been collected on the Emperor Seamounts from a depth of 1407 m. <em>Oerstedia sashae</em> sp. nov. differs from the other species of the genus by the lack of eyes. Another new species, <em>Oerstedia sofiae</em> sp. nov., which is very close to the symbiotic <em>Cryptonemertes actinophila</em> (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 <em>O. sashae</em> sp. nov., <em>O. sofiae</em> sp. nov., and <em>C. actinophila</em> belong to clade <em>Paroerstediella</em> of the genus <em>Oerstedia</em>. <em>Cryptonemertes actinophila</em> is here proposed to be transferred to the genus <em>Oerstedia</em>. <em>Oerstedia sofiae</em> sp. nov. and <em>O. actinophila</em> comb. nov. differ from the other species of the genus by the red blood and a very short proboscis and rhynchocoel.</p></div>\",\"PeriodicalId\":11120,\"journal\":{\"name\":\"Deep-sea Research Part Ii-topical Studies in Oceanography\",\"volume\":null,\"pages\":null},\"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}","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}
A description of two new deep-sea nemerteans from North Pacific with reconsideration of the genus Oerstedia (Hoplonemertea, Oerstediidae)
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.
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.
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