蝇幼虫的捕食性昆虫及其捕食量研究

Predatory Insects of Fly Larvae and Their Predatory efficiency

自1986年以来,我们对蝇幼虫的捕食性昆虫进行了调查,共发现7种较为常见、分布较广的鞘翅目昆虫:1、大隐翅虫,2、大眼隐翅虫,3、阎甲虫,4、扁葬甲虫,5、白腹皮蠹,6、玫瑰皮蠹,7、赤足郭公虫.在室内对这7种捕食性昆虫捕食蝇幼虫的食量进行了初步研究,发现前5种食量较大,其中大隐翅虫一天最多可捕食家蝇三令幼虫48只,大眼隐翅虫为17只,阎甲虫为14只,扁葬甲虫为36只。除捕食外,这些昆虫还可大量咬残,咬死蝇类幼虫。作者认为,以上捕食性昆虫是蝇类生物防治中不可忽视的天敌类群之一。

We have found 7 species predatory insects of fly larvae since 1986. They are the common species of Coleopterous adults:1.Creophilus maxillosus L.,2.Dianous sp.,3.Hister sp.,4.Silpha sp.,5.Dermestes maculatvs (Deg.),6.Dermestes dimidiatus 7.Nocrobia rufipes(De Geer).Their predation rates have been studied in laboratory.Three of them,Creophilus maxillosus L.,Dianous sp.and Silpha sp.,have large appetites.They feed on separately 48,17 and 36 of the thrid instar larvae of house fly per day. Besides eating,the predators cause the injuries and deaths of fly larvae.