中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 海洋研究所
  3. 中国科学院海洋研究所
  4. 实验海洋生物学重点实验室
A New Species of Macellicephaloides Uschakov, 1955 (Annelida, Polynoidae) from Cold Seeps in the South China Sea: Insights into the Taxonomy and Phylogeny of Macellicephaloides and Related Genera

文献类型：期刊论文

作者Li, Jie1,2,5; Zhang, Linlin1,2,5; Wang, Mingxiao4,5; Wu, Xuwen3,5
刊名CURRENT ISSUES IN MOLECULAR BIOLOGY
出版日期2025-10-29
卷号47期号:11页码:17
关键词polychaetes systematics morphology deep-sea chemosynthetic environment
ISSN号1467-3037
DOI10.3390/cimb47110897
通讯作者Wu, Xuwen(wuxuwen@qdio.ac.cn)
英文摘要Macellicephaloides Uschakov, 1955 (Annelida: Polynoidae) is a genus of deep-sea polychaetes characterized by a specialized pharynx bearing two pairs of jaws (with the dorsal pair fused) and three pairs of lateral papillae, the middle pair of which is greatly elongated, and remarkable adaptability to diverse deep-sea habitats. Most species in this genus inhabit abyssal depths (>7200 m), with high diversity in western Pacific trenches, while a few occur in relatively shallow habitats such as deep-sea seamounts and hydrothermal vents. This paper presents a new species, Macellicephaloides lingshuiensis sp. nov., found in deep-sea cold seeps in the South China Sea, representing the shallowest distribution record for the genus to date and the first record from cold seep environments. The classification and phylogeny of Macellicephaloides and related genera have long been the subject of debate. A previous study suggested that Macellicephaloides is nested within the Macellicephala clade, but our analyses-based on 13 mitochondrial protein-coding genes, 12S, 16S, 18S, 28S rRNA, and ITS1-ITS2 sequences-tentatively indicate that these two genera form independent evolutionary clades. Additionally, our phylogeny indicates a close evolutionary relationship between deep-sea Macellicephaloides and cave-dwelling polynoids (e.g., Gesiella), highlighting ecological connections between deep-sea and cave habitats. These conclusions are supported by morphological comparisons and genetic distance analyses. Although the subfamily Macellicephalinae is recovered as a monophyletic group, intergeneric phylogenetic relationships within it remain unresolved, highlighting the need for additional data from more species and genera. We amend the generic diagnosis of Macellicephaloides and provide an identification key to all valid species in the genus. This study clarifies the taxonomy and phylogeny of Macellicephaloides and related taxa, emphasizing the importance of continued sampling in understudied deep-sea habitats to enhance our understanding of their biodiversity.
WOS关键词COMPLETE MITOCHONDRIAL GENOME ; SCALE WORM ; CONFIDENCE ; POLYCHAETA
资助项目Marine S&T Fund of Shandong Province for Pilot National Laboratory for Marine Science and Technology[2022QNLM030004] ; Natural Science Foundation of Shandong Province[ZR2025MS691] ; National Natural Science Foundation of China[42376092] ; Biological Resources Programme, Chinese Academy of Sciences[CAS-TAX-24-033]
WOS研究方向Biochemistry & Molecular Biology
语种英语
WOS记录号WOS:001625546900001
出版者MDPI
源URL[http://ir.qdio.ac.cn/handle/337002/204286]  
专题海洋研究所_实验海洋生物学重点实验室
通讯作者Wu, Xuwen
作者单位1.Qingdao Marine Sci & Technol Ctr, Lab Marine Biol & Biotechnol, Qingdao 266000, Peoples R China
2.Chinese Acad Sci, Inst Oceanol, Lab Expt Marine Biol, Qingdao 266000, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny, Qingdao Key Lab Marine Biodivers & Conservat, Qingdao 266071, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
5.Univ Chinese Acad Sci, Coll Engn Sci, Beijing 101408, Peoples R China
推荐引用方式
GB/T 7714		 Li, Jie,Zhang, Linlin,Wang, Mingxiao,et al. A New Species of Macellicephaloides Uschakov, 1955 (Annelida, Polynoidae) from Cold Seeps in the South China Sea: Insights into the Taxonomy and Phylogeny of Macellicephaloides and Related Genera[J]. CURRENT ISSUES IN MOLECULAR BIOLOGY,2025,47(11):17.
APA Li, Jie,Zhang, Linlin,Wang, Mingxiao,&Wu, Xuwen.(2025).A New Species of Macellicephaloides Uschakov, 1955 (Annelida, Polynoidae) from Cold Seeps in the South China Sea: Insights into the Taxonomy and Phylogeny of Macellicephaloides and Related Genera.CURRENT ISSUES IN MOLECULAR BIOLOGY,47(11),17.
MLA Li, Jie,et al."A New Species of Macellicephaloides Uschakov, 1955 (Annelida, Polynoidae) from Cold Seeps in the South China Sea: Insights into the Taxonomy and Phylogeny of Macellicephaloides and Related Genera".CURRENT ISSUES IN MOLECULAR BIOLOGY 47.11(2025):17.

入库方式： OAI收割

来源：海洋研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。