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Reproduction can be costly and is predicted to trade-off against other characters. However, while these trade-offs are well documented for females, there has been less focus on aspects of male reproduction. Furthermore, those studies that have looked at males typically only investigate phenotypic associations, with the underlying genetics often ignored. Here, we report on phenotypic and genetic tradeoffs in male reproductive effort in the seed beetle, Callosobruchus maculatus. We find that the duration of a male’s first copulation is negatively associated with subsequent male survival, phenotypically and genetically. Our results are consistent with life-history theory and suggest that like females, males trade-off reproductive effort against longevity. Heredity (2009) 103, 340–345; doi:10.1038/hdy.2009.80; published online 29 July 2009

Erratum: Negative phenotypic and genetic associations between copulation duration and longevity in male seed beetles