Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific
文献类型：期刊论文
| 作者 | Xu, Yu1,2,3 ; Zhan, Zifeng1; Xu, Kuidong1,2,3
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| 刊名 | BIOLOGY-BASEL
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| 出版日期 | 2021-07-01 |
| 卷号 | 10期号:7页码:27 |
| 关键词 | Anthozoa Chrysogorgiidae Iridogorgia flexilis Iridogorgia verrucosa Iridogorgia densispiralis taxonomy morphology phylogeny |
| DOI | 10.3390/biology10070588 |
| 通讯作者 | Xu, Kuidong(kxu@qdio.ac.cn) |
| 英文摘要 | Simple Summary Deep-water octocorals are main components of vulnerable marine ecosystems (VMEs) and play an important role in conservation and research. Iridogorgia Verill, 1883 is a distinct octocoral group characterized by a remarkably spiral structure and large size in deep sea, where the diversity of Iridogorgia is poorly known in the Western Pacific. Based on the collection of Iridogorgia specimens from seamounts in the tropical Western Pacific, we described five species including three new species using an integrated morphological-molecular approach. We assessed the potential of the mitochondrial genes MutS and COI, and the nuclear 28S rDNA for species delimitation and phylogenetic reconstruction of Iridogorgia. The results suggest that the mitochondrial markers are not able to resolve the species boundaries and deeply divergent relationships adequately, while 28S rDNA showed potential application in DNA barcoding and phylogenetic reconstruction for this genus. This study will help to understand the Iridogorgia biodiversity in the Western Pacific and shed more light on the screening of barcodes for octocorals. Members of genus Iridogorgia Verrill, 1883 are the typical deep-sea megabenthos with only seven species reported. Based on an integrated morphological-molecular approach, eight sampled specimens of Iridogorgia from seamounts in the tropical Western Pacific are identified as three new species, and two known species I. magnispiralis Watling, 2007 and I. densispicula Xu, Zhan, Li and Xu, 2020. Iridogorgia flexilis sp. nov. is unique in having a very broad polyp body base with stout and thick scales. Iridogorgia densispiralis sp. nov. can be distinguished by rods present in both polyps and coenenchyme, and I. verrucosa sp. nov. is characterized by having numerous verrucae in coenenchyme and irregular spindles and scales in the polyp body wall. Phylogenetic analysis based on the nuclear 28S rDNA indicated that I. densispiralis sp. nov. showed close relationships with I. splendens Watling, 2007 and I. verrucosa sp. nov., and I. flexilis sp. nov. formed a sister clade with I. magnispiralis. In addition, due to Rhodaniridogorgia fragilis Watling, 2007 nested into the Iridogorgia clade in mtMutS-COI trees and shared highly similar morphology to the latter, we propose to eliminate the genus Rhodaniridogorgia by establishing a new combination Iridogorgia fragilis (Watling, 2007) comb. nov. and resurrecting I. superba Nutting, 1908. |
| 资助项目 | Key Program of National Natural Science Foundation of China[41930533] ; Science & Technology Basic Resources Investigation Program of China[2017FY100804] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; Senior User Project of RV KEXUE[KEXUE2018G27] ; Senior User Project of RV KEXUE[E12414101Q] |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000678171800001 |
| 出版者 | MDPI |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/175913]  |
| 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. Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific[J]. BIOLOGY-BASEL,2021,10(7):27. |
| APA | Xu, Yu,Zhan, Zifeng,&Xu, Kuidong.(2021).Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific.BIOLOGY-BASEL,10(7),27. |
| MLA | Xu, Yu,et al."Morphological and Molecular Characterization of Five Species Including Three New Species of Golden Gorgonians (Cnidaria: Octocorallia) from Seamounts in the Western Pacific".BIOLOGY-BASEL 10.7(2021):27. |
入库方式： OAI收割
来源：海洋研究所
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