海河水利Issue(6)：15-19,29,6.DOI:10.3969/j.issn.1004-7328.2025.06.003
基于环境DNA技术的赤水河鱼类多样性特征研究
Fish Diversity Characteristics of the Chishui River Based on Environmental DNA Technology
摘要
Abstract
To investigate the distribution characteristics of fish diversity and environmental influencing factors in the main stream of the Chishui River,water samples were collected from the main stream of the Chishui River within Guizhou Province during the high-water period in July 2023.Environmental DNA(eDNA)extraction,high-throughput sequencing,and species identification were conducted alongside water quality parameter measurements to analyze fish diversity characteristics and their correlation with environmental factors.The results showed that a total of 81 fish species belonging to 20 families and 8 orders were identified across 10 sampling sections of the Chishui River's main stream.The trends in the Shannon-Wiener diversity index,Simpson index,and Pielou evenness index were generally consistent,showing a gradual decline from upstream to midstream,followed by an increase downstream.The Shannon-Wiener diversity index was significantly correlated with conductivity,total phosphorus,and water temperature(P<0.05).These findings provide valuable insights for the conservation of fish resources and ecological restoration in the main stream of the Chishui River.关键词
环境DNA/山区河流/鱼类多样性/环境因子Key words
environmental DNA/mountain river/fish diversity/environmental factors分类
环境科学引用本文复制引用
彭芸,伯彦萍,史涵丹..基于环境DNA技术的赤水河鱼类多样性特征研究[J].海河水利,2025,(6):15-19,29,6.基金项目
贵州省水利厅科技支撑项目"基于环境DNA宏条码技术的赤水河贵州段鱼类资源调查研究"(KT202319) （KT202319）
