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老鼠是人类的大敌,它不仅糟踏粮食、损害庄稼、传播疾病,而且也危害渔业生产。老鼠在渔业生产上的危害主要育两个方面,第一是直接捕食鱼类。捕食鱼类的主要是水老鼠和一些个体较大的田鼠、家鼠等旱老鼠。水老鼠能在较深的水中潜行较长的时间,它一般以鱼类和蚌、蚬等水生动物为主食。旱老鼠则能捕食浅水中的鱼类和其它动物。根据我地的鼠害情况看,从晚秋到早春这段时间受害较大,特别是在房屋附近面积较小、池水较浅的鱼池中越冬的鱼种受害严重,有些水深不到33厘米的池鱼甚至损失过半。被捕食的鱼以草鱼为多,其他鱼类也被埔食。农村的稻田养鱼,鼠害现象也非常严重。第二是老鼠在塘埂中挖洞做窝,挖空了塘埂。且水老鼠的洞穴要与水相通,于是就挖通塘埂的内壁,使池水外流,因此,常常发生漏水跑鱼事故,甚至会使整个鱼池干涸。
Rats are the enemy of humankind, which not only spoils food, damages crops and spread diseases, but also endangers fishery production. Mouse harm in fishery production mainly two aspects, the first is the direct capture of fish. Fish predators are mainly water mice and some larger voles, domestic mice and other dry mice. Water rats can sneak in deeper water for a longer period of time, which generally fish and mussels, mussels and other aquatic animals as the staple food. Drought rats can prey on shallow water fish and other animals. According to my rodent situation, from late autumn to early spring this period of time more victims, especially in the area near the house smaller, shallow water ponds overwintering species of fish victims, some less than 33 cm deep pool Fish even lost more than half. Prey fish to grass carp more, other fish are also poo food. Farming of rice in rural areas, rodent damage is also very serious. The second is the mouse digging holes in the pond to do the nest, hollowing ponds. Water caves and water to be connected with the water, so they dig through the inner walls of ponds, so that outflow of water, therefore, often occur leaking running fish accidents, and even make the entire pond dried up.