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- W1974367033 abstract "Abstract The brown planthopper Nilaparvata lugens (Stal) (Hemiptera: Delphacidae) is a classical resurgent rice pest induced by insecticides. The past focus on resurgence mechanisms has been on the stimulation of the reproduction of adult females induced by insecticides. To date, the role that males play as a resurgence of N. lugens has not been investigated. The present study examined changes in protein levels in both male accessory glands and female ovaries induced by the insecticides triazophos and deltamethrin as well as the stimulating effect of treated males on the fecundity of adult females via mating following foliar sprays of the insecticides. For adults that had been exposed as nymphs to treated rice plants, the protein content in both the male accessory glands and in the female ovaries of N. lugens were significantly affected by male mating status, insecticide and insecticide concentration. There was a higher protein content in male accessory glands when males were exposed to triazophos as third instars compared to fifth instars, and there was a higher protein content before mating compared to after mating. In addition, the protein levels in male accessory glands after mating for individuals exposed to high doses of the two insecticides as 3rd and 5th instars were significantly lower than untreated control except for exposed to triazophos as 3rd instar, indicating that treated males transferred more male accessory gland protein to adult females via mating. The protein content was also affected by different combinations of treated mating pairs. Adult males (♂t) developed from third instar nymphs treated with triazophos stimulated the fecundity of the female significantly via mating (♂t × ♀ck) with untreated females (♀ck) (control females), increasing the reproductive rate by 43.5% as compared to the mating (♂ck × ♀ck) of untreated males and females. Also, the fecundity of the females after the mating (♂t × ♀t) of treated males and females was significantly higher than that after the mating (♂ck × ♀t) of untreated males with treated females. These findings indicated that the reproductive effects of insecticide on males can be transferred to females via mating. The present findings provide valuable information for understanding the potential role that males play in the pesticide-induced resurgence of N. lugens." @default.
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- W1974367033 date "2010-11-01" @default.
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- W1974367033 title "Insecticide-induced increase in the protein content of male accessory glands and its effect on the fecundity of females in the brown planthopper Nilaparvata lugens Stål (Hemiptera: Delphacidae)" @default.
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- W1974367033 doi "https://doi.org/10.1016/j.cropro.2010.07.009" @default.
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