Morphology and phylogeny of <italic style="font-style: italic">Chrysogorgia pinniformis</italic> sp. nov. and <italic style="font-style: italic">C. varians</italic> sp. nov., two golden corals from the Caroline seamounts in the tropical Western Pacific Ocean

Yu XU; Zifeng ZHAN; Kuidong XU

doi:10.1007/s00343-021-0386-5

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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

Seamount megabenthos taxonomy and phylogeny | Updated：2023-04-27

- 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 Vol. 39, Issue 5, Pages: 1767-1789(2021)
- Affiliations：
  
  1.Laboratory of Marine Organism Taxonomy and Phylogeny, Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
  2.Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China
  3.University of Chinese Academy of Sciences, Beijing 100049, China
- Author bio：
  
  Kuidong XU, E-mail: kxu@qdio.ac.cn
- Funds：
- DOI：10.1007/s00343-021-0386-5
  CLC：
- Received：10 October 2020，
  
  Accepted：13 November 2020，
  
  Online First：15 April 2021，
  
  Published：2021-09
- Accepted：
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Yu XU, Zifeng ZHAN, Kuidong XU. 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, 39(5): 1767-1789.
DOI：

Yu XU, Zifeng ZHAN, Kuidong XU. 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, 39(5): 1767-1789. DOI： 10.1007/s00343-021-0386-5.

摘要

Abstract

Two new species of

Chrysogorgia

Duchassaing & Michelotti

1864

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

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.

关键词

Keywords

references

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Related Author

Ting LÜ

Zifeng ZHAN

Kuidong XU

Zhiyu MENG

Wen GUO

Chunming WANG

Lingyun SUN

Hongxiu ZHAI

Related Institution

Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao)

College of Life Sciences, Liaocheng University

Laboratory of Marine Organism Taxonomy and Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences

Laboratory for Marine Biology and Biotechnology, Laoshan Laboratory

University of Chinese Academy of Sciences

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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

摘要

Abstract

关键词

Keywords

references