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解放后,随着我国水利建设事业的发展,新建的水库迅速地遍布祖国各地,水库面积日益扩大,水库渔业在淡水渔业中占据着越来越重要的地位。在我国,水库养鱼是解放后出现的新事物,它必然提出了许多需要解决的新问题,如何对待凶猛鱼类就是其中之一。国外的生态学家在研究自然种群变化规律的基础上,认为从长远的观点来看,掠食者(Predator)在生态系中的作用并不是完全有害的,因为如果没有它们的稀疏作用,各物种
After the liberation, with the development of water conservancy construction in our country, newly-built reservoirs rapidly spread all over the motherland and the area of reservoirs has been expanding day by day. Reservoir fisheries occupy an increasingly important position in freshwater fisheries. In our country, the fish in reservoirs is a new thing after the liberation. It inevitably put forward many new problems that need to be solved. One of them is how to deal with ferocious fish. Based on the study of the variation of natural populations, foreign ecologists think that the role of predators in ecosystems is not totally harmful in the long run, because without their sparse effect Species