基于环境DNA技术的黑潮-亲潮交汇区夏季鱼类物种多样性分析
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Q958.8

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农业农村部全球渔业资源调查监测评估(公海渔业资源综合科学调查)专项(D-8021-22-0129-01)


Fish diversity analysis of the Kuroshio-Oyashio confluence region in summer based on environmental DNA technology
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    摘要:

    西北太平洋黑潮-亲潮交汇区是世界上最高产的渔区之一,鱼类资源众多。为了解交汇区鱼类群落的生物多样性,保护和合理开发利用该海域的渔业资源,利用环境DNA(Environmental DNA,eDNA)技术对夏季西北太平洋黑潮与亲潮交汇区进行鱼类多样性分析,通过22个站点水样的采集、DNA提取及测序,共检测出22目30科44属51种海水鱼类,其中灯笼鱼科种类最多,共17种,占鱼类物种总数的33.33%。此外,相对丰度较高的物种为宽尾臂灯鱼、西钻光鱼、日本背灯鱼、远东拟沙丁鱼、斑点多纪鲀、瓦氏角灯鱼、斑头六线鱼、日本鲭、日本海、黑潮眶灯鱼。站点间Alpha多样性差异较大,总体上呈现高纬度断面生物多样性低,低纬度断面生物多样性高的特点。冗余分析表明,影响交汇区鱼类群落结构的主要环境因子为溶解氧。研究证明了eDNA技术用于监测西北太平洋黑潮-亲潮交汇区鱼类多样性及其空间分布的可行性。

    Abstract:

    The Kuroshio-Oyashio confluence region of the Northwest Pacific Ocean is one of the most productive fishing areas, which is rich of fish resources. In order to understand the biodiversity of fish communities in the confluence region and to protect and exploit fishery resources properly,we used environmental DNA (eDNA) to analyze the fish diversity in the Kurishio-Oyashio confluence region during the summer. A total of 51 species of marine fishes (22 orders,30 families and 44 genera) were detected among 22 water sampling stations using high-throughput sequencing analysis. The Myctophidae family was the richest in species, comprising 33.33% of the detected fish species. In addition, the primary species with higher relative abundance were Stenobrachius nannochir, Gonostoma atlanticum, Notoscopelus japonicus, Sardinops melanostictus, Takifugu poecilonotus, Ceratoscopelus warmingii, Hexagrammos agrammus, Scomber japonicus, Nematalosa japonica and Diaphus kuroshio. The alpha diversity among stations was obviously different, and there were higher biodiversity in low-latitude sections than that of high-latitude sections. Redundancy analysis showed that the content of dissolved oxygen was the main environment factor impacting the fish species composition. The results indicated that eDNA can be a useful method for monitoring fish diversity and spatial distribution in the Kuroshio-Oyashio confluence region.

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梁绪虹,王丛丛,刘洋,俞晔伟,宋成辉.基于环境DNA技术的黑潮-亲潮交汇区夏季鱼类物种多样性分析[J].上海海洋大学学报,2024,33(4):911-926.
LIANG Xuhong, WANG Congcong, LIU Yang, YU Yewei, SONG Chenghui. Fish diversity analysis of the Kuroshio-Oyashio confluence region in summer based on environmental DNA technology[J]. Journal of Shanghai Ocean University,2024,33(4):911-926.

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  • 收稿日期:2023-09-21
  • 最后修改日期:2024-01-16
  • 录用日期:2024-01-29
  • 在线发布日期: 2024-07-09
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