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【目的】为了明确土耳其斯坦叶螨Tetranychus turkestani和截形叶螨T.truncatus在高温逆境下的生存特性对其种群发展的影响。【方法】通过短时高温处理试验,研究了土耳其斯坦叶螨和截形叶螨卵、幼螨、成螨在38℃,42℃和46℃下处理2～6h后的孵化率和存活率,以及对其后续发育历期和生殖的影响。【结果】两种叶螨的卵和幼螨在38～46℃下处理2～6h,其存活率随着温度和处理时间的增加而降低,后续发育历期随着温度和处理时间的增加而延长。两种叶螨的雌成螨在38～46℃下处理2～6h后其存活率、产卵前期、产卵期和产卵量均不受影响,但所产卵的孵化率明显降低,其中土耳其斯坦叶螨在46℃下处理6h的孵化率下降了15.5%,截形叶螨在46℃下处理6h的孵化率下降了18.0%。【结论】高温暴露主要影响叶螨的孵化率、存活率和后续的发育历期,对成螨的寿命和生殖无显著影响;土耳其斯坦叶螨和截形叶螨对极端高温的适应性存在差异,土耳其斯坦叶螨对高温的适应性要高于截形叶螨。
【Objective】 In order to clarify the effects of Tetranychus turkestani and T.truncatus on the population development of T. turuncatus under high temperature stress. 【Method】 The hatchability and survival rate of eggs, young mites and adult mites of Tetranychidae and Tetranychidae at 38 ℃, 42 ℃ and 46 ℃ for 2 ~ 6h were studied by short-term high temperature treatment. As well as its subsequent developmental duration and reproductive effects. 【Result】 The results showed that the eggs and larvae of the two spider mites were treated at 38 ~ 46 ℃ for 2 ~ 6 h. The survival rate decreased with the increase of temperature and treatment time. With the increase of temperature and treatment time, extend. The survival rate, pre-oviposition period, spawning period and fecundity of female adult mites of two kinds of spider mites were not affected after they were treated at 38-46 ° C for 2-6 h, but the hatching rate of spawning was significantly decreased The hatching rate of Tetranychus Turkestanis decreased by 15.5% at 46 ℃ for 6h, and that of Tetranychus urticae decreased by 18.0% at 46 ℃ for 6h. 【Conclusion】 High-temperature exposure mainly affects the hatching rate, survival rate and subsequent developmental duration of spider mites, but has no significant effect on the longevity and reproduction of adult mites. There is a difference in adaptability to turf spider mite and spider mites , Turkestan spider mite adaptability to high temperature truncated spider mites.