Reevaluation of the Systematic Status of Branchinotogluma (Annelida, Polynoidae), with the Establishment of Two New Species

IF 2 2区生物学 Q3 EVOLUTIONARY BIOLOGY

Journal of Zoological Systematics and Evolutionary Research Pub Date : 2023-01-11 DOI:10.1155/2023/1490800

Xuwen Wu, Wenquan Zhen, Qi Kou, Kuidong Xu

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引用次数: 1

Abstract

Branchinotogluma is one of the most diverse genera among the polynoids inhabiting deep-sea chemosynthetic environments. A total of 14 species have been described from the hydrothermal vents and cold seeps worldwide. Our phylogenetic analyses based on four genes (COI, 16S, 18S, and 28S rRNA) recovered the current Branchinotogluma as paraphyletic, with seven clades scattered in two main clades. The monophyly of the main clade composed of Branchinotogluma (except Branchinotogluma segonzaci), Branchipolynoe, and Peinaleopolynoe is supported by the presence of 20–21 segments with 9–10 pairs of elytra, ventral papillae starting from segment 12 in males, and arborescent branchiae. The monophyly of another main clade composed of B. segonzaci, Bathykurila, Lepidonotopodium, Levensteiniella, and Thermopolynoe is supported by the presence of usually 22–30 segments with 11 pairs of elytra and the lack of ventral papillae in females. In addition, our study recognized two new species, Branchinotogluma nanhaiensis sp. nov. and B. robusta sp. nov., based on specimens collected from the deep-sea cold seeps in the South China Sea. Both the morphology and molecular phylogenetic analyses support the validity of the two new species and the sister relationships between B. nanhaiensis and B. japonicus and between B. robusta and B. pettiboneae as well.

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以两个新种的建立为例，重新评价Branchinotogluma(环节动物，蓼科)的系统地位

Branchiotogluma是栖息在深海化学合成环境中的多核苷酸中最具多样性的属之一。世界各地的热液喷口和冷泉共有14种物种被描述。我们基于四个基因（COI、16S、18S和28S rRNA）的系统发育分析发现，目前的Branchinotogluma是副系的，有七个分支分散在两个主要分支中。由Branchinotogluma（不包括Branchinotogluma segonzaci）、Branchipolynoe和Peinaleopolinoe组成的主要分支的单系性得到了20–21个具有9–10对鞘翅的节段、雄性从节段12开始的腹侧乳头和树状鳃的支持。由B.segonzaci、Bathykurila、Lepidonopordum、Levensteiniella和Thermopolynoe组成的另一个主要分支的单系性得到了雌性通常存在22-30个节段和11对鞘翅以及缺乏腹侧乳头的支持。此外，我们的研究根据从南海深海冷渗漏中采集的标本，确认了两个新物种，南海Branchinotogluma nanhaiensis sp.nov.和B.robusta sp.nov。形态学和分子系统发育分析都支持这两个新种的有效性，以及南海B.nanhaiensis和日本B.japonicus之间以及粗壮B.robusta和小B.petiboneae之间的姐妹关系。

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来源期刊

Journal of Zoological Systematics and Evolutionary Research 生物-动物学

CiteScore

5.60

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： The Journal of Zoological Systematics and Evolutionary Research (JZSER)is a peer-reviewed, international forum for publication of high-quality research on systematic zoology and evolutionary biology. The aim of the journal is to provoke a synthesis of results from morphology, physiology, animal geography, ecology, ethology, evolutionary genetics, population genetics, developmental biology and molecular biology. Besides empirical papers, theoretical contributions and review articles are welcome. Integrative and interdisciplinary contributions are particularly preferred. Purely taxonomic and predominantly cytogenetic manuscripts will not be accepted except in rare cases, and then only at the Editor-in-Chief''s discretion. The same is true for phylogenetic studies based solely on mitochondrial marker sequences without any additional methodological approach. To encourage scientific exchange and discussions, authors are invited to send critical comments on previously published articles. Only papers in English language are accepted.