【摘要】 为明确剑毛帕厉螨Stratiolaelaps scimitus对韭菜迟眼蕈蚊Bradysia odoriphagaYang et Zhang的捕食潜能,本试验研究了剑毛帕厉螨对韭菜迟眼蕈蚊卵、1龄幼虫和2龄幼虫的捕食功能反应。结果表明:剑毛帕厉螨对不同虫态韭菜迟眼蕈蚊的捕食功能反应都符合HollingⅡ型方程,对3种不同虫态的捕食能力大小为:1龄幼虫>卵>2龄幼虫;对三者的理论日最大捕食量分别为18.76头、16.05粒和2.27头。对韭菜迟眼蕈蚊卵及1、2龄幼虫的寻找效应都随猎物密度的增加而降低;在0~3h对卵和1龄幼虫捕食量最大,捕食速率也最高,在3~6h对2龄幼虫的捕食量和速率最高。更多还原

【Abstract】 To identify the predation potential of Bradysia odoriphagaby Stratiolaelaps scimitus,the functional response of S.scimitus to three stages(egg,first-instar and second-instar larvae)of B.odoriphaga was examined.The results showed that the predation fitted well with HollingⅡtype,and the control ability of S.scimitus to the three stages of B.odoriphaga was:first-instar larva>egg>second-instar larvae;the maximum potential predacious abilities were 18.76,16.05 and 2.27,respectively,and the searching efficiency decreased with increasing prey density.In 0-3 h,the predation rates for eggs and first-instar larvae were significantly higher than in other times,and that for the second-instar larvae was the highest in 3-6 h.更多还原