Morphology and phylogeny of Chrysogorgia pinniformis sp. nov. and C. varians sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean

doi:10.1007/s00343-021-0386-5

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生物分类与系统演化实验室

	Morphology and phylogeny of Chrysogorgia pinniformis sp. nov. and C. varians sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean
	Xu, Yu 1,3; Zhan, Zifeng 1,2; Xu, Kuidong 1,2,3
刊名	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
	2021-08-12
页码	23
关键词	Anthozoa Octocorallia Chrysogorgiidae deep sea taxonomy
ISSN号	2096-5508
DOI	10.1007/s00343-021-0386-5
通讯作者	Xu, Kuidong(kxu@qdio.ac.cn)
英文摘要	Two new species of Chrysogorgia Duchassaing & Michelotti, 1864 collected from the Caroline seamounts in the tropical Western Pacific Ocean are described. Chrysogorgia pinniformis sp. nov. belongs to Versluys' group C (Squamosae typicae) with only scales in polyp body wall and tentacles. C. pinniformis sp. nov. is characterized by large branches pinnately branched and forming multiple fans with its small branches regularly and quasi-dichotomous branched, and scales and rods present in the polyp mouth area. It is most similar to C. pinnata Cairns, 2007 by the pinnate trait, but differs from the latter by its group C pattern (vs. group A, Spiculosae) and having sclerites present in the polyp mouth area (vs. absent). Chrysogorgia varians sp. nov. belongs to the Chrysogorgia group A (Spiculosae) with rods distributed in the polyp body wall and tentacles. It is characterized by warty rods and elongated scales in the tentacles, many warts and ridges on the scales, conspicuously toothed margins at the rounded ends in the pinnules, and small rods with ridge-like warts in the polyp mouth area. This species was frequent and abundant in the Caroline seamounts during our cruises and its morphological variability in growth period was obvious. The phylogenetic analyses based on mtMutS and 28S rDNA regions supported the assignment of the new species to the genus Chrysogorgia. However, the mtMutS marker showed very limited usefulness for species delimitation and inner relationship inference of Chrysogorgia. In contrast, the 28S rDNA showed much higher level of genetic variation, and it may be a potential barcode for this genus. In the 28S rDNA trees, the two new species clustered together. Additionally, compilation of our data showed that 42 of 78 (ca. 54%) Chrysogorgia species were found in the Indo-West Pacific convergent region, indicating that this area may be a hotspot of deep-water Chrysogorgia species.
资助项目	Science & Technology Basic Resources Investigation Program of China[2017FY100804] ; National Natural Science Foundation of China[41930533] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; Strategic Priority Research Program of the Chinese Academy of Sciences[KEXUE2019GZ04]
WOS研究方向	Marine & Freshwater Biology ; Oceanography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000684088300002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/175977]
专题	海洋研究所_海洋生物分类与系统演化实验室
通讯作者	Xu, Kuidong
作者单位	1.Chinese Acad Sci, Ctr Ocean Megasci, Inst Oceanol, Lab Marine Organism Taxon & Phylogeny,Shandong Pr, Qingdao 266071, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Xu, Yu,Zhan, Zifeng,Xu, Kuidong. Morphology and phylogeny of Chrysogorgia pinniformis sp. nov. and C. varians sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2021:23.
APA	Xu, Yu,Zhan, Zifeng,&Xu, Kuidong.(2021).Morphology and phylogeny of Chrysogorgia pinniformis sp. nov. and C. varians sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,23.
MLA	Xu, Yu,et al."Morphology and phylogeny of Chrysogorgia pinniformis sp. nov. and C. varians sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean".JOURNAL OF OCEANOLOGY AND LIMNOLOGY (2021):23.