[张贴报告]Fish Diversity Monitoring Using Environmental DNA Techniques in the Clarion-Clipperton Zone of the Pacific Ocean

Fish Diversity Monitoring Using Environmental DNA Techniques in the Clarion-Clipperton Zone of the Pacific Ocean
编号:2990 稿件编号:3655 访问权限:私有 更新:2023-04-25 20:32:33 浏览:487次 张贴报告

报告开始:2023年05月07日 09:05 (Asia/Shanghai)

报告时间:1min

所在会议:[SP] 张贴报告专场 » [SP-6-1] 6、海洋地球科学

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摘要
    Marine fish populations have suffered the consequences of overfishing for a long time, leading to a loss in biodiversity. Traditional methods have been historically used to survey fish diversity but are limited to commercial species, particularly on the high seas. Environmental DNA (eDNA) has been successfully used to monitor biodiversity in aquatic environments. In this study, we monitored fish diversity in the Clarion-Clipperton Zone (CCZ) of the Eastern Pacific Ocean using eDNA metabarcoding. Our results identified 2 classes, 35 orders, 64 families, 87 genera. The genera Mugil, Scomberomorus, and Scomber had high relative abundance in the mesopelagic and demersal zone. Fish diversity were varied with sampling sites, and the greatest number of species were found at the depth of 2500 meters. Environmental changes driven fish aggregation, and our results indicated that Chla was negatively correlated with fish community, while DO was positively correlated with fish community. This study released the fish diversity pattern and the effected by the environment in the CCZ, which would provide useful information for biodiversity management and environment baseline for International Sea-Bed Authority.
 
关键字
Fish Diversity, Environmental DNA, Clarion-Clipperton Zone
报告人
何韦宜
自然资源部第三海洋研究所

稿件作者
李伟文 自然资源部第三海洋研究所
何韦宜 自然资源部第三海洋研究所
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