为了明确温度对智利小植绥螨发育和繁殖的影响,以二斑叶螨为食料,研究了16、19、22、25、28、31、34℃7个恒定温度下智利小植绥螨不同螨态的发育历期、成螨产卵动态及产卵量.结果表明,16～31℃范围内智利小植绥螨发育历期随温度的升高而缩短,34℃下发育历期较31℃有所延长.卵、幼螨、第一若螨、第二若螨、卵-成螨的发育起点温度分别为11.08、14.91、14.28、14.03和12.36℃,有效积温分别为29.69、4.94、8.96、11.72和58.33日·度.19～28℃下平均单雌产卵量较高,分别为93.60、86.90、94.25、88.95粒/头,31℃下产卵量最少,为39.25粒.16、19、22、25、28℃下平均产卵历期差异不显著,分别为20.10、22.55、19.10、19.10、21.10 d,31℃下产卵历期仅为11.35 d.智利小植绥螨在19～28℃下发育状态较好,繁殖力较高,说明该温度范围是智利小植绥螨生长发育和繁殖的适宜温度.%The aim of this study was to understand the effect of temperature on development and oviposition of the predatory mite Phytoseiulus persimilis.The developmental durations of different stages,dynamics of oviposition and fecundity of adult at seven different temperatures (16,19,22,25,28,31 and 34℃) were recorded with the two-spotted spider mite Tetranychus urticae as food.The developmental duration of P.persimilis was reduced with the increase of temperature under 16-31℃,but increased under 34℃ compared with that under 31℃.The threshold temperatures of egg,larva,nymph Ⅰ and nymph Ⅱ were 11.08,14.91,14.28,14.03 and 12.36℃,respectively,while the effective accumulative temperatures were 29.69,4.94,8.96,11.72 and 58.33 day-degrees,respectively.The average fecundity of the female was highest under 19,22,25 and 28℃,with a value of 93.60,86.90,94.25 and 88.95 eggs/female,respectively,while the value was the lowest under 31℃,which was 39.25.The average duration of egg stage showed no difference under the temperature from 16 to 28℃,which were 20.10,22.55,19.10,19.10 and 21.10 days,respectively,while the value was 11.35 day under 31℃.P.persimilis could develop well under the temperature from 19 to 28℃ with high fecundity,indicating that this temperature range is suitable for the development and reproduction of this predatory mite.
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