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一个新的深海十足目异尾下目甲壳动物科主要依据形态学从新西兰奥特亚罗瓦和澳大利亚东南部建立起来。

A new deep-sea crustacean family of Tanaidacea is established from Aotearoa New Zealand and Southeast Australia based principally on morphology.

作者信息

Bird Graham J, Błażewicz Magdalena

机构信息

Independent Researcher, Łódź, Poland.

Department of Invertebrate Zoology and Hydrobiology, University of Lodz, Łódź, Poland.

出版信息

Sci Rep. 2025 May 6;15(1):15822. doi: 10.1038/s41598-025-91383-4.

DOI:10.1038/s41598-025-91383-4
PMID:40328852
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC12055979/
Abstract

We establish a new deep-sea tanaidacean family, Arthruridae n. fam., separated from the family Tanaellidae Larsen and Wilson, 2002, and based on a morphology-based phylogenetic analysis. This new taxon is supported by molecular evidence from a recent study of the newly described Caudalongidae Błażewicz & Bird 2024. Arthrurids resemble tanaellids such as Tanaella Norman & Stebbing, 1886 with their robust bodies, or Arhaphuroides Sieg, 1986 with their fused projecting uropod exopod, but also exhibit some agathotanaid-like features. These include the pereonite shape, pleon-pleotelson configuration, and pereopod morphology that are absent in the more diverse Tanaellidae, but arthrurids have a more plesiomorphic cheliped-cephalothorax articulation compared to those in the Agathotanaidae Lang, 1971. A large epignath seta, large coxal sclerite on the cephalothorax, and sticklike pereopods are among characters distinguishing the Arthruridae from most tanaellids. Two new genera are established, Arthruropsis n. gen. and Paralibanius n. gen., with the former tanaellid Arhaphuroides bombus Larsen, 2005, transferred to Arthruropsis n. gen. Six new species from bathyal New Zealand waters are described, Libanius concertator n. sp., L. intonsus n. sp., L. largitas n. sp., L. projectus n. sp., L. tangaroa n. sp., and Paralibanius taitonga n. sp., along with three from the southeastern Australia slope, Libanius australis n. sp., L. brevicarpus n. sp., and L. clisicola n. sp. We provide a key to the 13 known arthrurid species.

摘要

我们基于形态学的系统发育分析，建立了一个新的深海异足类科——节肢异足科（Arthruridae n. fam.），它从2002年的拉森和威尔逊所建立的塔纳异足科（Tanaellidae）中分离出来。这个新分类单元得到了最近对新描述的尾长异足科（Caudalongidae Błażewicz & Bird 2024）研究的分子证据支持。节肢异足类与诸如1886年的诺曼和斯特宾所描述的塔纳异足属（Tanaella）那样身体粗壮的塔纳异足类相似，或者与1986年的西格所描述的具有融合突出尾足外肢的拟无尾异足属（Arhaphuroides）相似，但也呈现出一些类阿加索异足类的特征。这些特征包括在种类更多的塔纳异足科中不存在的胸节形状、腹节 - 尾节构造以及步足形态，不过与1971年的朗所描述的阿加索异足科相比，节肢异足类的螯足 - 头胸部关节更为原始。一根大的上颚刚毛、头胸部上大的基节骨片以及棒状步足是将节肢异足科与大多数塔纳异足类区分开来的特征之一。建立了两个新属，即节肢拟异足属（Arthruropsis n. gen.）和副利班异足属（Paralibanius n. gen.），2005年的拉森所描述的原塔纳异足类的拟无尾异足属的邦布斯种（Arhaphuroides bombus Larsen）被转移到节肢拟异足属。描述了来自新西兰深海海域的6个新物种，即和谐利班异足属（Libanius concertator n. sp.）、光滑利班异足属（L. intonsus n. sp.）、宽大的利班异足属（L. largitas n. sp.）、突出的利班异足属（L. projectus n. sp.）、汤加罗阿利班异足属（L. tangaroa n. sp.）和泰通加副利班异足属（Paralibanius taitonga n. sp.），以及来自澳大利亚东南部斜坡的3个新物种，即澳大利亚利班异足属（Libanius australis n. sp.）、短腕利班异足属（L. brevicarpus n. sp.）和栖息利班异足属（L. clisicola n. sp.）。我们提供了一份已知的13种节肢异足类物种的检索表（鉴别表）。

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Integrative systematics and ecology of a new deep-sea family of tanaidacean crustaceans.深海等足目新科甲壳动物的综合系统学和生态学。
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Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?世界海洋中的等足目（甲壳纲：端足目）多样性——我们已经走了多远？
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