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Effects of temperature and food on the development of immature stages, longevity and fecundity of the ovipositing females, mortality and sex ratio of the progeny of Anagrus incamatus Haliday, a mymari...d egg parasitoid of the rice planthoppers were investigated. At higher temperature the developmental period of immatures was shortened and vice versa. The threshold temperature for development of this parasitoid was estimated as 11°C. The parasitoid development was unfavorable above 28°C. The parasitoid females fed on honey lived longer and produced more progeny than those fed on water alone. Mortality rate of the immatures was also high at the extremely high or low temperatures. Sex ratio was not so affected by the temperature. In all aspects, the optimum temperature for this parasitoid appears to be 24°C. Age-specific fertility table for A. incamatus was also constructed.続きを見る
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