Polyandry Boosts Offspring Viability in Dung Beetles, Challenging Monogamy Norms
Female dung beetles in the wild mate with multiple males, leading to postcopulatory sexual selection. Researchers studied Onthophagus taurus beetles in their natural habitat and found that 88% of females had offspring from at least two males, with some having up to five fathers. About 23% of females showed a preference for certain males in paternity, indicating strong postcopulatory sexual selection. Females benefit from mating with multiple males as it increases the number of viable offspring they produce. This study provides evidence that polyandry is advantageous for female dung beetles in the wild.