以甜果螨为食的东方钝绥螨的种群生命表

东方钝绥螨是叶螨的重要捕食性天敌，对多种叶螨的防控起着重要的作用。东方钝绥螨一直被认为是叶螨的专食性捕食者，其规模化生产不成功极大地限制了其应用。本试验在（25±1）℃、RH 80%±5%、光周期16L：8D的条件下，以甜果螨为食，东方钝绥螨能够完成发育和繁殖，并以此组建了东方钝绥螨试验种群生命表。试验结果表明，东方钝绥螨以甜果螨为食各发育阶段历期较短，分别为卵期1.77 d，幼螨期0.77 d，前若螨和后若螨期各为1.05 d。25℃时东方钝绥螨的世代平均周期为14.07 d，内禀增长率0.18，周限增长率1.20，种群倍增时间3.87 d。日均产卵量1.71粒/d，总产卵量平均22.50粒/雌。由此得出甜果螨是饲养东方钝绥螨的一种很好的替代猎物。

Life Table of Experimental Population of Amblyseius orientalis Feeding on Carpoglyphus lactis

As an important specific predator, Amblyseius orientalis (Ehara) shows effective control for mites, while lack of large-scale production of A. orientalis restricts its wide application. In this paper, life table of an experimental population of A. orientalis feeding on Carpoglyphus lactis (Linnaeus) was established for investigation of its development and reproduction under controlled temperature (25 ℃) and humidity (80%) conditions. Results showed that developmental duration of different stages of A. orientalis were 1.77, 0.77, 1.05 and 1.05 d, respectively. The mean generation time (T), intrinsic increase rate (rm), finite increase rate (λ) and the time for double population were 14.07, 0.18, 1.20 and 3.87 d, respectively. Daily fecundity and fecundity of single female were 1.71 and 22.50. These results suggest that C. lactis is a good alternative prey for A. orientalis.