水生生物学报2026，Vol.50Issue(3)：11-19,9.DOI:10.3724/1000-3207.2025.2025.0313
龙羊峡水库外来鱼类种类组成及生态风险评估
THE COMPOSITION OF INVASIVE FISH SPECIES AND ECOLOGICAL RISK ASSESSMENT IN LONGYANGXIA RESERVOIR
摘要
Abstract
To understand the current composition,ecological risks,and potential distribution areas of high-risk invasive fish species in the Longyangxia Reservoir,and to develop targeted prevention and control measures,this study conducted systematic field investigations in the Longyangxia Reservoir and the surrounding Yellow River Basin in May,September,and December of 2023,as well as May and July 2024.These were complemented by a literature review to systematically summarize the current fish composition and ecological types of invasive fish in the reservoir.The AS-ISK tool was used to assess the risk level of each invasive species,and the MaxEnt model was used to predict its potential distribution of one typical invasive species,Pseudorasbora parva,across the Longyangxia Reservoir Basin.The results showed that:(1)A total of 21 fish species belonging to 4 orders,6 families,and 16 genera were collected,including 11 invasive species.Based on the index of relative importance(IRI),6 dominant species were identified,4 of which were invasive:Carassius auratus,Pseudorasbora parva,Oncorhynchus mykiss,and Hypomesus olidus;(2)Eco-logical matrix factors revealed that invasive fish species were predominantly characterized by terminal mouth positions(R=0.64),adhesive egg production(R=0.91),omnivorous feeding habits(R=0.72),and benthic lifestyles(R=0.45),with most being resident species(R=0.73)adapted to calm water environments(R=0.91);(3)According to the AS-ISK assessment,there were 5 high-risk,2 medium-risk,and 4 low-risk species,with the top 5 highest-risk species being Hypomesus olidus,Pseudorasbora parva,Cyprinus carpio,Oncorhynchus mykiss,and Carassius auratus.Compared with historical data and incorporating weather predictions,the number of invasive species is expected to continue increasing;(4)The MaxEnt model prediction indicated that high-risk area of H.olidus is mainly concentrated in the Longyangxia Reservoir,Liujiaxia Reservoir,and the Yellow River Basin between the two reservoirs,while the reser-voir tail and upstream areas represent low-risk zones.The study highlight H.olidus as the key species for prevention,with the Longyangxia Reservoir tail being the primary focal zone.These findings provide data support and theoretical references for the supporting green and sustainable fisheries development in the Yellow River Basin.关键词
外来鱼类/风险评估/Maxent模型/外来水生生物风险筛选工具(AS-ISK)/龙羊峡水库Key words
Exotic fish species/Risk assessment/Maxent model/Aquatic Species Invasiveness Screening Kit(AS-ISK)/Longyangxia Reservoir分类
农业科技引用本文复制引用
胡烨,刘超凡,丁益帆,周琼,杨俊琳,马宝珊,吴金明..龙羊峡水库外来鱼类种类组成及生态风险评估[J].水生生物学报,2026,50(3):11-19,9.基金项目
农业农村部财政专项"黄河渔业资源与环境调査"(HHDC-2022-0103) （HHDC-2022-0103）
中央级公益性科研院所基本科研业务费专项资金(2023TD08) （2023TD08）
国家重点研发计划(2022YFB3206900和2022YFB3206905)资助[Supported by the Financial Special Project of the Ministry of Agriculture and Rural Affairs,"Yellow River Fishery Resources and Environmental Survey"(HHDC-2022-0103) （2022YFB3206900和2022YFB3206905）
Special Fund for Basic Scientific Research Business Expenses of Central Public Welfare Research Institutes(2023TD08) （2023TD08）
the National Key Research and Development Program of China(2022YFB3206900 and 2022YFB3206905)] （2022YFB3206900 and 2022YFB3206905）
