人民长江2026，Vol.57Issue(2)：89-96,116,9.DOI:10.16232/j.cnki.1001-4179.2026.02.011
典型浅滩-深潭河段鱼类多样性及生态类群特征研究
Fish diversity and ecological groups in typical riffle-pool river sections
摘要
Abstract
To investigate the fish community composition and diversity characteristics of typical riffle-pool river sections in the fluctuating backwater area of the upper Changjiang River,environmental DNA(eDNA)technology was applied to analyze fish species diversity in the Guangyangba and Dajiantan river sections.The results showed that a total of 77 fish species,belonging to 54 genera,19 families,and 11 orders,were detected across the two sections,in which Cyprinidae fish were predominant.All the fi-shes included 14 endemic species of the Changjiang River and 8 exotic species.Overall,Cyprinus carpio,Ctenopharyngodon idel-la,and Hemiculter bleekeri were identified as the dominant species in this survey.α diversity analysis revealed higher fish species diversity in the branch channels of both sections.Additionally,fish species distribution was more even in the Guangyangba section compared to the Dajiantan section.The classification of fish ecological groups indicated that the fish in the study sections were pri-marily characterized by omnivorous feeding habits,preference for slow-flowing water,mid-to-bottom layer activity,non-mi-gratory behavior,schooling tendencies,and adhesive egg-laying.This study demonstrates the effectiveness of eDNA technology in revealing fish species diversity and ecological group information.It provides targeted recommendations for the conservation of fish diversity in the Changjiang River and offers scientific support for the design of river restoration projects.关键词
鱼类多样性/eDNA技术/浅滩-深潭河段/生态类群/生境修复Key words
fish diversity/eDNA technology/riffle-pool river sections/ecological group/habitat restoration分类
农业科技引用本文复制引用
谢青容,杨胜发,王丽,杨威,张先炳,张鹏..典型浅滩-深潭河段鱼类多样性及生态类群特征研究[J].人民长江,2026,57(2):89-96,116,9.基金项目
国家重点研发计划项目(2023YFC3208805) （2023YFC3208805）
国家自然科学基金青年科学基金项目(52209080) （52209080）
