Effects of brief exposure to high temperature on survival and reproductive adaptation of Bemisia tabaci Q-biotype
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Key Words：Bemisia tabaci Q-biotype, high temperature exposure, survival, fecundity, sex ratio
Abstract： The survival rate, fecundity, longevity and offspring viability of the Bemisia tabaci Q-biotype was studied. The survival rate of adults kept in climatic incubators at 44℃ was 43.5%. After exposure to 44℃ for 1 h, female fecundity was 77.2, lower than that of females kept at 26℃ (100.1). Significantly lower longevity was observed in adults of both sexes kept at 44℃ compared to those kept at 26℃. Female adults were more heat tolerant than the males. Temperature had no effect on offspring survival or the sex ratio of the next generation, but higher temperatures delayed the peak of oviposition and shortened its duration. The results indicate that exposure to high temperature has a significant effect on the reproduction of the B. tabaci Q-biotype.