Effects of age at mating of both sexes on female longevity and fecundity performance in Ophraella communa LeSage (Coleoptera: Chrysomelidae)
文献类型： 外文期刊
作者： Zheng, Hai-Yan;Ma, Chao;Guo, Jian-Ying;Wan, Fang-Hao;Zhou, Zhong-Shi
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关键词： Mate age;hatch rate;trade-offs;biological control agent;sex-specific age effect
期刊名称： BIOCONTROL SCIENCE AND TECHNOLOGY
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收录情况： SCI
摘要： Life-history strategies of animals are governed by fitness-related trait trade-offs. In particular, the age at which either one of the two sexes copulate has been shown to affect insect reproductive output and longevity. This suggests that trade-offs between longevity and reproduction might drive the choice of a mating partner based on their age and ultimately such choices might select for different life-histories. Although several studies indicate that female age at mating dictates subsequent insect longevity, fecundity, and egg hatch rate, it is unclear how male age at copulation affects these life-history traits. In this study, we simultaneously investigated the effects of female and male age on female fecundity, eggs hatch rate, and adult longevity in Ophraella communa LeSage (Coleoptera: Chrysomellidae), the primary biological control agent of the invasive common ragweed, Ambrosia artemisiifolia L. We found that young mature females lived significantly longer when they were mated with older males. Maximum female fecundity and subsequent egg hatch rate occurred when young females mated with 3-day-old males. On the other hand, females lived longer when mating with an older male. These findings are in accordance with the cost-of-reproduction concept.
分类号： S476
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