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鲮(Cirrhinus molitorella)是分布于我国华南地区的一种热带、亚热带鱼类,历史上未曾分布于长江水系。鲮食性广、性成熟时间短,繁殖量大,但不耐低温。2010年10月,对长江宜昌江段鱼类资源调查中发现了一种非长江水系土著种的野鲮亚科鱼类。基于鳞片、鳍条、口器、腮耙等特征鉴定为鲮(C.molitorella)。进一步结合鲮的生物学特征和长江水温及水生态环境状况对鲮的进入途径和成为入侵鱼类的可能性进行了初步的探讨,并对其成为入侵鱼类的危害和防治进行了初步讨论。
Cirrhinus molitorella is a tropical and subtropical fish distributed in South China. It has never been distributed in the Yangtze River system before. Epistaxis wide, sexual maturity is short, reproductive, but not resistant to low temperature. In October 2010, a survey of wild fish species other than the Yangtze River water system was found in the survey of fish resources in the Yichang Section of the Yangtze River. Based on the scale, fin, mouthparts, ram and other characteristics identified as 鲮 (C.molitorella). Based on the biological characteristics of 鲮 and the water temperature and ecological environment in the Yangtze River, this paper discussed the ways of entering and the possibilities of invasion into the fish, and discussed the damage and control of the invasive fish.