eDNA assessment of pelagic fish diversity, distribution, and abundance in the central Pacific Ocean
文献类型： 外文期刊
作者： Li, Changwen 1 ; Long, Han 3 ; Yang, Shenglong 1 ; Zhang, Yu 1 ; Tang, Fenghua 1 ; Jin, Weiguo 4 ; Wang, Guolai 4 ; Chang, Weidong 4 ; Pi, Yan 3 ; Gao, Lei 1 ; Ma, Lingbo 1 ; Zhao, Ming 1 ; Zheng, Hanfeng 1 ; Gong, Yi 2 ; Liu, Yang 2 ; Jiang, Keji 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Key Lab Ocean & Polar Fisheries, Minist Agr & Rural Affairs, Shanghai 200090, Peoples R China
2.Shanghai Ocean Univ, Shanghai 201306, Peoples R China
3.Fudan Univ, Sch Life Sci, Shanghai 200438, Peoples R China
4.Shanghai KaiChuang Deep Sea Fisheries Co Ltd, Shanghai 200082, Peoples R China
关键词： Open ocean; Fish; eDNA; Tool; Monitor; Biodiversity
期刊名称：REGIONAL STUDIES IN MARINE SCIENCE （ 影响因子：2.166； 五年影响因子：2.24 ）
ISSN： 2352-4855
年卷期： 2022 年 56 卷
页码：
收录情况： SCI
摘要： In open ocean environment with rich biodiversity, the assessment of fish resources is critical to the development of marine ecosystems and the sustainable use of resources. Environmental DNA (eDNA) metabarcoding is a new, constantly evolving tool and has recently been used to examine deep-sea eukaryotic diversity and communities. Here, eDNA metabarcoding was used to monitor fish populations in the central Pacific Ocean to understand the distribution of marine biodiversity in the region and investigate the abundance of dominant species. Water samples in present study were collected from three habitats, a total of 73 fish species from 41 families were detected, of which, 15 fish species from 10 families were found to be dominant species. What is more, the dominant species: Elagatis bipinnulata, Encrasicholina punctifer, Euthynnus affinis, lisha elongata, Nomeus gronovii, Reinhardtius hippoglossoides, Vinciguerria nimbaria had significant differences between habitats (p < 0.05 or p < 0.01). Alpha diversity indicated that the fish community composition in the three habitats was generally high, which was the highest at the Equator habitat. Beta diversity based on Bray-Curtis and Jaccard indices indicated that the fish composition of the three habitats overlapped in part, but there were not significantly different (p > 0.05). Regression analyses indicated that there was an overall correlation in the biomass and reads richness (p < 0.05) of Thunnus obesus and Katsuwonus pelami This study not only verities the validity and accuracy of eDNA technology applied to pelagic fish biodiversity assessment but also provides systematic cases for fish resource surveys in other sea areas and lays the foundation for oceanic fish resource monitoring. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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