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来自朝鲜半岛周边潮下带的艾氏猛水蚤科（桡足亚纲，猛水蚤目）三个新物种。

Three new species of the family Idyanthidae (Copepoda, Harpacticoida) from sublittoral zones around the Korean Peninsula.

作者信息

Kim Jong Guk, Cho Kyuhee, Lee Jimin

机构信息

Division of Zoology, Honam National Institute of Biological Resources, Mokpo, Republic of Korea.

Ocean Climate Response & Ecosystem Research Department, Korea Institute of Ocean Science & Technology, Busan, Republic of Korea.

出版信息

PeerJ. 2025 Jan 16;13:e18767. doi: 10.7717/peerj.18767. eCollection 2025.

DOI:10.7717/peerj.18767
PMID:39830962
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11742251/
Abstract

There are few taxonomic studies of the harpacticoid family Idyanthidae Lang, 1944 in the Pacific Ocean. As a first report of the family in this region, one species of the monotypic genus Lang, 1948 and two species of the genus Sars, 1905 are described from sublittoral habitats around the Korean Peninsula. sp. nov. is distinguished from the type and only species of the genus, Lang, 1948, in the length:width ratio of the body and genital double-somite, length of caudal seta I, and structure of the female P5 baseoendopod. sp. nov. and sp. nov. share the armature of the female P5 exopod with four setae with Sars, 1905, Sars, 1920, and Sars, 1905. However, the two new species differ from the three European species in the armature of the terminal segment of the P1 endopod and female P5 baseoendopod, and in the shape of the genital double-somite. The male of sp. nov. also has two distinct features: the distal two segments of the P2 endopod are completely fused, and the third segment of the antennule has a prominent outer projection. The geographical distribution of and is extended by the discovery of three new species in Korean waters. We also discuss a possible phylogenetic relationship among members of family Idyanthidae at genus level.

摘要

关于太平洋猛水蚤科艾氏猛水蚤科（Idyanthidae Lang，1944）的分类学研究很少。作为该科在这一区域的首次报道，从朝鲜半岛周围的潮下带栖息地描述了单型属朗猛水蚤属（Lang，1948）的1个物种以及萨斯猛水蚤属（Sars，1905）的2个物种。新物种在身体长宽比、生殖双节片长度、尾刚毛I的长度以及雌性P5底内肢结构方面与朗猛水蚤属（Lang，1948）的模式种及唯一物种有所区别。新物种和新物种在雌性P5外肢的刚毛着生情况上与萨斯猛水蚤属（Sars，1905）、萨斯猛水蚤属（Sars，1920）以及萨斯猛水蚤属（Sars，1905）的物种相同，均为具4根刚毛。然而，这两个新物种在P1内肢末端节和雌性P5底内肢的刚毛着生情况以及生殖双节片形状方面与3个欧洲物种不同。新物种的雄性还有两个明显特征：P2内肢的远端两节完全融合，以及小触角的第三节有一个突出的外侧突起。在韩国海域发现的3个新物种扩展了和的地理分布范围。我们还讨论了艾氏猛水蚤科各属成员之间可能的系统发育关系。

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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/495a/11742251/968564241568/peerj-13-18767-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/495a/11742251/b0461c489097/peerj-13-18767-g009.jpg
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本文引用的文献

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2
Deep sea without limitsfour new closely related species of Emertonia Wilson, 1932 (Copepoda: Harpacticoida: Paramesochridae) show characters with a world-wide distribution.深海无界：1932年的4个新的近缘艾默特桡足类物种（桡足纲：猛水蚤目：副美猛水蚤科）展现出具有全球分布的特征。
Zootaxa. 2021 Oct 12;5051(1):443-486. doi: 10.11646/zootaxa.5051.1.18.