A comparison of seasonal composition and structure of fish community between environmental DNA technology and gillnetting in the Pearl River Estuary, China
文献类型： 外文期刊
作者： Li, Zhuoying 1 ; Jiang, Peiwen 2 ; Wang, Longxin 1 ; Liu, Li 1 ; Li, Min 2 ; Zou, Keshu 1 ;
作者机构： 1.South China Agr Univ, Univ Joint Lab Guangdong Prov, Coll Marine Sci, Hong Kong & Macao Reg Marine Bioresource Conservat, Guangzhou 510642, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Sustainable Utilizat Open sea Fishery, Minist Agr & Rural Affairs, Guangzhou 510300, Peoples R China
3.Sci Observat & Res Field Stn Pearl River Estuary E, Guangzhou 510300, Guangdong, Peoples R China
4.South China Agr Univ, Coll Marine Sci, Guangzhou, Peoples R China
5.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Peoples R China
关键词： eDNA technology; Fish community; Gillnetting; Pearl River Estuary; Seasonal variation
期刊名称：ECOLOGICAL INDICATORS （ 影响因子：6.9； 五年影响因子：6.6 ）
ISSN： 1470-160X
年卷期： 2023 年 147 卷
页码：
收录情况： SCI
摘要： Non-destructive and cost-effective fish diversity monitoring approaches are needed for the management and protection of estuarine ecosystems. Environmental DNA (eDNA) technology is a promising, environmentally friendly technology that has been applied in fish diversity studies in estuarine ecosystems. In this study, we investigated the seasonal composition, diversity, and structure of fish community in the Pearl River Estuary (PRE) using eDNA technology and gillnetting. We identified 156 fish in the PRE, including 26 orders, 58 families, 93 genera, and 115 species according to eDNA technology. And eDNA technology provided more taxonomic composition information in the PRE than did gillnetting. Significant or highly significant seasonal differences in fish community composition and structure were detected between the wet and dry seasons. Fifteen and eight genus-level indicator taxa differed significantly between the two seasons according to eDNA technology and gillnetting, respectively. However, the significant differences detected in this study suggest that some taxa did not overlap between the two approaches. Therefore, fish diversity monitoring in the PRE should include a combination of eDNA technology and gillnetting for comprehensive fish community data analysis. Our findings have important implications for fish community monitoring and estuarine ecosystem management.
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