应用实验种群生命表评价加州新小绥螨对土耳其斯坦叶螨和截形叶螨的控制能力
Evaluation of the potential for Neoseiulus californicus to act as a biological control for Tetranychus turkestani and Tetranychus truncate, based on life table analysis
汪小东** 袁秀萍 黄艳勤 张建华 赵伊英***
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作者单位：石河子大学农学院， 石河子 832000
中文关键词：加州新小绥螨，土耳其斯坦叶螨，截形叶螨，生命表参数，生物防治
英文关键词：Neoseiulus californicus, Tetranychus turkestan, Tetranychus truncate, life table, biocontrol capability
中文摘要： 【目的】 为了解加州新小绥螨Neoseiulus Californicus（McGregor）对土耳其斯坦叶螨Tetranychusturkestani（Ugarov et Nikolski）和截形叶螨Tetranychus truncate（Ehara）的控制能力。【方法】 采用实验种群生命表方法进行评价。【结果】 以土耳其斯坦叶螨为食时加州新小绥螨的净增值率（R0=33.236）、内禀增长率（rm=0.218），大于以截形叶螨为食时的值（R0=32.458，rm=0.207），而世代平均周期（T=16.340）和种群倍增时间（t=3.173）小于以截形叶螨为食时的值（T=16.849，t=3.355）。【结论】 以土耳其斯坦叶螨为食有利于加州新小绥螨种群的发育和繁殖。
英文摘要： [Objectives] To evaluate the potential for Neoseiulus californicus (McGregor) to act as a biological control forTetranychus turkestani (Ugarov et Nikolski) and T. truncate (Ehara). [Methods] Life tables for an experimental, captivepopulation of N. californicus preying on T. turkestani and T. truncate were constructed. [Results] The results show that thenet reproductive rate (R0) and intrinsic rate of natural increase (rm) of N. californicus feeding on T. turkestani were 33.236 and0.218, respectively, greater than when feeding on T. truncate (R0=32.458, rm=0.207). The mean generation duration (T=16.340)and the time for the population to double (t= 3.173) when feeding on T. turkestani were less than when feeding on T. truncate
(T=16.849, t=3.355). [Conclusion] N. californicus develops faster and has a higher reproductive rate when feeding on T.turkestani compared to when feeding on T. truncate.