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鱼感鱼、鳜鱼等凶猛鱼类在我国水库生态系统中具重要调控作用,但均面临严重的种质资源问题,亟待从宏观与微观两方面开展综合研究。鱼感鱼种群强烈的生态作用与种群数量的快速操控性能,在具适宜自然环境的大型水库可用作维护良性水库生态系统的有效操控手段,并建议尽早建立我国水库鱼感鱼种质资源库。大型水库适度增殖鳜鱼,抑制底层及沿岸杂食性鱼类种群数量,对延缓水库富营养化进程具有不可替代的作用。虽然鳜鱼种群数量不像鱼感鱼那样可迅速有效调控,但鳜鱼对水库生态系统的作用远没有鱼感鱼那么剧烈,因而也没有必要对鳜鱼种群数量进行快速操控。
Fish, fish, catfish and other ferocious fishes play an important regulatory role in the reservoir ecosystem of our country. However, they all face serious problems of germplasm resources. Therefore, it is urgent to conduct a comprehensive study from the macro and micro aspects. The strong ecological role of the fish-eating fish population and the rapid manipulation of the population quantity can be used as an effective control means for maintaining a benign reservoir ecosystem in a large-scale reservoir with suitable natural environment. It is suggested that an early establishment of China’s reservoir fish- . Appropriate proliferation of anchovy in large reservoirs can restrain the numbers of omnivorous fish in the bottom and coast, which play an irreplaceable role in delaying the eutrophication of reservoirs. Although the population of mullet fish is not as quickly and effectively regulated as that of fish, the mullet’s effect on reservoir ecosystem is far less intense than that of fish-based fish and there is no need to quickly manipulate the population of mullet fish.