淡水渔业2026，Vol.56Issue(2)：46-56,11.
三峡水库生态调度期间监利江段产漂流性卵鱼类自然繁殖变化特征研究
Study on the natural reproductive changes of fishes with drifting eggs in the Jianli section during the ecological operation of the Three Gorges Reservoir
摘要
Abstract
To investigate the promoting effects of the ecological operation of the Three Gorges Reservoir on the natural reproduction of drifting-egg fish in the Jianli section,this study conducted surveys on the early-stage fish resources in the middle reaches of the Yangtze River at the Jianli section from 2014 to 2022.During the sur-vey period,a total of 34 fish egg species were collected in the Jianli section,among which 25 species belonged to drifting-egg fish,mainly including Hemicuter bleekeri,Squalidus argentatus,Saurogobio dabryi,Parabramis pekinensis,Ctenopharyngodon idellus,Leptobotia taeniaps.The average annual runoff of eggs was 2.899 billion,ranging from 2.098 to 3.908 billion,and the total annual runoff of fish fry was 70.669 billion,ranging from 26.189 to 153.912 billion.Based on the ratio of the average daily spawning scale during the ecological dispatch period to that during the non-dispatch period,it could be known that since 2014,the ecological dispatch had promoted the reproduction of drift-spawning fish in the Jianli section,with better effects in 2014,2015,2016,2018,2019,2021 and 2022.Based on the correlation analysis between spawning scale and hydrological indicators,the spawning quantity of drifting-egg fish in the Jianli section showed a significant positive correlation with peak dis-charge(R=0.421,P<0.01),discharge increase(R=0.568,P<0.05),and rising-water duration(R=0.688,P<0.01).Moreover,conditions more conducive to the reproduction of drifting-egg fish in the Jianli section oc-cur when the rising-water duration exceeded 3 days,the discharge increase reached above 1900 m3/s,and the peak discharge exceeded 15100 m3/s.The research findings provide technical references for the assessment of ecological scheduling effects and for the continuous optimisation of the Three Gorges ecological scheduling plan.关键词
三峡水库/生态调度/监利江段/鱼类早期资源/产漂流性卵鱼类Key words
Three Gorges Reservoir(TGR)/ecological operation/Jianli section/early-stage resources of fishes/drifting-egg fish分类
农业科技引用本文复制引用
姜伟,郜星晨,段辛斌,杨浩,张启凡,覃会会,戴凌全,蒲艳,高雷,田辉伍,汪登强..三峡水库生态调度期间监利江段产漂流性卵鱼类自然繁殖变化特征研究[J].淡水渔业,2026,56(2):46-56,11.基金项目
资助项目:中国长江三峡集团公司项目资助(合同编号:202303297) （合同编号:202303297）
国家自然科学基金委员会-中华人民共和国水利部-中国长江三峡集团有限公司长江水科学研究联合基金项目(U2240214) （U2240214）
中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金(2023TD09) （2023TD09）
