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Seed beetles mating

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Seed beetles mating

Mating in the seed beetle (Callosobruchus maculatus) causes damage to the females’ reproductive tract from the males’ spiny genital structures, but the spiniest males also have the healthiest offspring.
Julian Baur
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Julian Baur
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  • In the seed beetle (Callosobruchus maculatus), the male has a spiny genital structure that enhances its reproductive success. Photo: Johanna Rönn

    Male beetles’ spiny genitalia both harmful and beneficial to females

    Male seed beetles with genital structures that injure females may have greater reproductive success. As new research from Uppsala University shows, females that mate with such males benefit, in the sense that their offspring are healthier. This new piece of the puzzle will help scientists to understand how complex mating interactions between males and females have developedevolved.