Seasonal Fish Assemblage Structure Using Environmental DNA in the Yangtze Estuary and Its Adjacent Waters
Seasonal Fish Assemblage Structure Using Environmental DNA in the Yangtze Estuary and Its Adjacent Waters
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基于环境DNA的长江口及其邻近海域季节性鱼类组合结构
DOI：
10.3389/fmars.2019.00515
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发表时间：
2019-09
影响因子：
3.7
通讯作者：
Weiwei Xian
中科院分区：
文献类型：
--
作者：
Hui Zhang;Susumu Yoshizawa;Wataru Iwasaki;Weiwei Xian
由于环境变化和人类活动的影响，长江口及其附近海域的渔业资源急剧减少，传统的生态调查显示，物种多样性和渔业资源的年数量逐渐减少。环境DNA(EDNA)技术已被许多研究证明是检测鱼类物种、监测鱼类生物多样性和指示鱼类丰度的有效工具。本研究以长江口及其邻近海域为主要研究区域，利用EDNA技术研究了长江口及其邻近海域的鱼类群落结构。2018年，该河口共采集了50个埃德纳样本。结果表明，从三个季节共鉴定出41个可操作的分类单元，分别有18种、12种和33种鱼类分别与春、夏、秋三季相关。不同季节的鱼群有很大不同。典型对应分析表明，水温、盐度和溶解氧是影响季节组合结构的主要环境因子。本研究的结果表明，EDNA技术不仅可以成为渔业监测的有效工具，而且可以重要地帮助海洋资源保护、渔业的可持续开发、水产品加工业、生态友好型发展和社会经济稳定。
The fisheries resources of the Yangtze Estuary and its adjacent waters have undergone dramatic declines as a consequence of environmental changes and human activities, with traditional ecological investigations demonstrating progressive decreases in species diversity and annual numbers in the fisheries resource. Environmental DNA (eDNA) technology has been demonstrated as an effective tool by many studies for detecting fish species, monitoring fish biodiversity and indicate the fish abundance. In the present study, we chose the Yangtze Estuary and its adjacent waters as a primary research area to investigate fish assemblage structure using eDNA technology. A total of 50 eDNA samples were collected in the estuary in 2018. The results showed that 41 operational taxonomic units were identified from three seasons, with 18, 12 and 33 fish species associated specifically with spring, summer and autumn, respectively. The fish assemblage differed significantly among seasons. Canonical correspondence analysis showed that water temperature, salinity, and dissolved oxygen were the main environmental factors affecting structure of the seasonal assemblages. Results of the present study indicate that eDNA technology can be an effective tool not only for fisheries monitoring, but might also importantly assist marine resources conservation, sustainable exploitation of fisheries, the aquatic products processing industry, eco-friendly development, and socioeconomic stability.
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影响因子：
3.5
作者：
Miya M;Sato Y;Fukunaga T;Sado T;Poulsen JY;Sato K;Minamoto T;Yamamoto S;Yamanaka H;Araki H;Kondoh M;Iwasaki W
通讯作者：
Iwasaki W
影响因子：
1.2
作者：
E. Mendoza;M. Castillo-Rivera;Rocío Zárate-Hernández;Selene Ortiz-Burgos
通讯作者：
E. Mendoza;M. Castillo-Rivera;Rocío Zárate-Hernández;Selene Ortiz-Burgos
影响因子：
10.7
作者：
Iwasaki W;Fukunaga T;Isagozawa R;Yamada K;Maeda Y;Satoh TP;Sado T;Mabuchi K;Takeshima H;Miya M;Nishida M
通讯作者：
Nishida M
影响因子：
10.7
作者：
Sato Y;Miya M;Fukunaga T;Sado T;Iwasaki W
通讯作者：
Iwasaki W
影响因子：
6.6
作者：
Adam S. Smart;A. Weeks;Anthony R. Rooyen;Alana L. Moore;M. McCarthy;R. Tingley
通讯作者：
Adam S. Smart;A. Weeks;Anthony R. Rooyen;Alana L. Moore;M. McCarthy;R. Tingley