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Sex ratio effects on copulation, fecundity and progeny fitness for Agasicles hygrophila, a biological control agent of alligator weed

文献类型： 外文期刊

作者： Guo, Jian-Ying 1 ; Fu, Jian-Wei 2 ; Shi, Meng-Zhu 2 ; Li, Jian-Yu 2 ; Wan, Fang-Hao 1 ;

作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China

2.Fujian Acad Agr Sci, Inst Plant Protect, Fuzhou, Fujian, Peoples R China

期刊名称：BIOCONTROL SCIENCE AND TECHNOLOGY （ 影响因子：1.665； 五年影响因子：1.616 ）

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收录情况： SCI

摘要： Determining the best ratio of females to males of an insect's natural enemy is important for maximising population increase and promoting population establishment of a natural enemy. In this study, copulation behaviour, fecundity, progeny fitness and rate of population increase for the flea beetle, Agasicles hygrophila Selman & Vogt (Coleoptera: Chrysomelidae), were compared at different female percentage treatments (i.e., 80%, 66.7%, 50%, 33.3% and 20% females). The results showed that the copulation frequency and duration in males decreased, whereas those in females increased as the number of males increased. At 20%, 33.3% and 66.7% females, the rates of population increase were 3.4-, 2.17- and 0.79-fold higher than that at 50% females. Females at 20% and 33.3% were found to be optimal for mass rearing of the beetle

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