A new gorgonian Pseudopterogorgiananjiensis sp. nov. (Cnidaria, Octocorallia, Gorgoniidae) from the Nanji Islands, China.

IF 1.3 3区 生物学 Q2 ZOOLOGY ZooKeys Pub Date : 2024-09-27 eCollection Date: 2024-01-01 DOI:10.3897/zookeys.1213.126841
Tingzai Sun, Yu Xu, Kuidong Xu, Shun Chen, Shangwei Xie, Zifeng Zhan
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Abstract

Members of the genus Pseudopterogorgia Kükenthal, 1919 are widely distributed in shallow water of the Indo-West Pacific. During an investigation of benthic biodiversity in the subtidal zone surrounding the Nanji Islands in the East China Sea, two specimens of Pseudopterogorgia were collected and described as a new species based on an integrated morphological-molecular approach. Pseudopterogorgiananjiensis sp. nov. is most similar to P.fredericki Williams & Vennam, 2001 in the irregular branching form and indistinct scaphoids, but differs by the coenenchymal sclerite content of distinct capstans and a few warty spindles and radiates (vs. mostly warty spindles and a few capstans), and a purplish colony (vs. white, pink to deep rose). Molecular phylogenetic analyses, based on the mtMutS-COI gene sequences, delineated a monophyletic clade encompassing all assessed Pseudopterogorgia species. Within this clade, P.nanjiensis sp. nov. showed a close phylogenetic affinity with both P.fredericki and P.australiensis Ridley, 1884.

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A new gorgonian Pseudopterogorgiananjiensis sp.
Pseudopterogorgia Kükenthal, 1919 属的成员广泛分布于印度-西太平洋的浅水区。在对中国东海南麂列岛周围潮下带底栖生物多样性的调查中,采集到了两件伪opterogorgia 标本,并根据形态-分子综合方法将其描述为一个新物种。Pseudopterogorgiananjiensis sp. nov.与 P.fredericki Williams & Vennam, 2001 最为相似,都具有不规则的分枝形态和不明显的鞘状突起,但不同之处在于同源硬骨中含有明显的鞘状突起和少量疣状轴及放射状突起(与之相比,大部分为疣状轴和少量鞘状突起),以及略带紫色的菌落(与之相比,菌落呈白色、粉红色至深玫瑰色)。基于 mtMutS-COI 基因序列的分子系统进化分析划定了一个单系支系,包括所有已评估的 Pseudopterogorgia 物种。在该支系中,P.nanjiensis sp.nov.与 P.fredericki 和 P.australiensis Ridley, 1884 在系统发育上亲缘关系密切。
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来源期刊
ZooKeys
ZooKeys 生物-动物学
CiteScore
2.70
自引率
15.40%
发文量
400
审稿时长
3 months
期刊介绍: ZooKeys is a peer-reviewed, open-access, online and print, rapidly produced journal launched to support free exchange of ideas and information in systematic zoology, phylogeny and biogeography. All papers can be freely copied, downloaded, printed and distributed at no charge. Authors and readers are thus encouraged to post the pdf files of published papers on homepages or elsewhere to expedite distribution. There is no charge for color.
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