花园湖乌鳢鱼业生态地位的分析

Analysis on ecologic Value of black fishery in Huayuan take

在湖泊的渔业生产中,乌鳢一般是被作为敌害鱼类加以清除.通过渔获物调查和对乌鳢种群结构、食物组成的分析,认为在花园湖现有的生态条件下,乌鳢对经济鱼类的危害不大,还能起到抑制小杂鱼过量繁殖的作用,可以作为特种经济鱼类予以保留.

In the production of lake fisheries, Ophicephalus Argus Cantor (black-fish) is often taken as a kind of harm fish to be cleaned out. By our making aninvestigation of catching composition and an analysis of population structure andfood composition of black fish, the black fish might be reserved as a special co-mmercial fish. On the present ecological conditions of Hua yuan lake, black fishhas little harm to main commercial fish and can restrain the excessive smallwild fish.