抗凝血剂抑制褐家鼠繁殖作用的初步研究

Research about the disturbfertily effect of anticoagulant rodenticides on norway rat R. norvegicus

1998年3月至1999年5月,在实验室内用抗凝血剂敌鼠钠对孕褐家鼠(Rattusnorvegicus)进行了胚胎毒性试验,并在金华种猪场设立试验区和对照区各1个,1998年4月于试验区内投放w(溴敌隆)=0.0025%的溴敌隆苹果毒饵1周,每月在试验区和对照区用夹夜法测定小型兽类的种类组成和数量变动.结果表明,敌鼠钠对孕褐家鼠有致流产作用;试验区褐家鼠的密度在投药前与对照区相差不大,投药后各月的褐家鼠密度均大大低于对照区.说明低浓度抗凝血剂由于具有抑制繁殖的作用,在控制害鼠密度方面具有显著的效果.

The research about the embrgotoxicity of anticoagulant rodenticides, diphacineNa,on norway rat (Rattus norvegicus) was carried out in laboratory from March 1998 through May 1999.At the same time,a experimental region and a contradistinctive region were set up in the breeding pig farm of Jinhua.The apple baits with 0.002 5% concentration of bromadiolone were put in experimental region for a week in April 1998.The species composition and the density variety of small mammals were investigated monthly.The results obtained indicated that the diphacineNa has abortive effects on test rodents.The density variety of R. norvegicus before poison baits set makes no difference between the experimental region and the contradistinctive region,and that the monthly density variety of R. norvegicus in the experimental region after poison baits set is all lower than that in the contradistinctive region.Anticoagulant rodenticides have the disturbfertility effect on R. norvegicus.There is notable effect in controlling the density of rodents.