摘  要  【目的】 为了明确延迟交配对皂角豆象Megabruchidius dorsalis (Fahraeus)(Coleoptera: Bruchinae)寿命及繁殖的影响。【方法】 在室内条件下，分别对初羽化未交配的皂角豆象雌雄虫、雄虫、雌虫分别延迟1-7 d后配对饲养，研究延迟交配对该虫产卵前期、产卵期、产卵量、卵孵化率、子代性比及雌、雄成虫寿命等参数的影响。【结果】 雌、雄同时延迟交配和雌虫延迟交配显著延长雌虫寿命（P<0.05），但3种延迟交配处理均对雄性寿命无显著影响（P>0.05）。在3种延迟交配模式下，延迟交配对皂角豆象产卵期、产卵次数、产卵量和孵化率均有不利影响（皮尔森相关系数r<0），而对产卵前期则无显著影响（P>0.05），其中皂角豆象雌虫在延迟交配1和2 d时的产卵量最高，在延迟交配6和7 d时的产卵量明显下降；雌、雄同时延迟交配和雄虫延迟交配显著降低卵的孵化率（P<0.05）。【结论】 延迟交配会降低皂角豆象的繁殖潜力，结果将为深入探讨田间使用信息素迷向法防治皂角豆象提供依据。

Abstract  [Aim]  To determine the effects of delayed mating on the longevity and reproduction of Megabruchidius dorsalis (Fahraeus) (Coleoptera: Bruchinae). [Methods]  Indoor experiments were carried out to investigate the effects of three delayed mating treatments (delayed mating of both sexes, delayed mating of the male only, delayed mating of the female only) on preoviposition period, oviposition period, number of eggs, hatching rate, offspring sex ratio, and adult longevity. [Results]  Simultaneous delayed mating of both sexes, and delayed female mating, significantly increased female M. dorsalis longevity. However, there was no significant effect of any of the delayed mating treatments on male longevity. Of the three delayed mating treatments, delayed mating had adverse effects on M. dorsalis oviposition period, oviposition frequency, number of eggs, and hatching rate. In contrast, there was no significant effect of delayed mating on preoviposition period. Female oviposition was highest after 1-2 days delay in mating and decreased significantly after a delay of 6-7 days. There was a significant decrease in hatching rate with delayed mating of both sexes and by males alone. [Conclusion]  Delayed mating reduces the reproductive potential of M. dorsalis. The findings of this research provide a foundation for further exploration into utilizing pheromone attraction in field-based M. dorsalis control strategies.