biostudies-literatureMoiron MEuropean Research CouncilDeutsche ForschungsgemeinschaftAlexander von Humboldt-Stiftung3096-3106https://www.ebi.ac.uk/biostudies/studies/S-EPMC10092254biostudies-literatureUnknown36(12)A widespread effect of climate change is the displacement of organisms from their thermal optima. The associated thermal stress imposed by climate change has been argued to have a particularly strong impact on male reproduction but evidence for this postulated sex-specific stress response is equivocal.One important factor that may explain intra- and interspecific variation in stress responses is sexual selection, which is predicted to magnify negative effects of stress. Nevertheless, empirical studies exploring the interplay of sexual selection and heat stress are still scarce.We tested experimentally for an interaction between sexual selection and thermal stress in the red flour beetle <i>Tribolium castaneum</i> by contrasting heat responses in male and female reproductive success betweenFunctional ecologySexual selection moderates heat stress response in males and females.PMC10092254793550JA 2653/2‐1Moiron MWinkler LMartin OYJanicke TfalseSexual selection moderates heat stress response in males and females.A widespread effect of climate change is the displacement of organisms from their thermal optima. The associated thermal stress imposed by climate change has been argued to have a particularly strong impact on male reproduction but evidence for this postulated sex-specific stress response is equivocal.One important factor that may explain intra- and interspecific variation in stress responses is sexual selection, which is predicted to magnify negative effects of stress. Nevertheless, empirical studies exploring the interplay of sexual selection and heat stress are still scarce.We tested experimentally for an interaction between sexual selection and thermal stress in the red flour beetle <i>Tribolium castaneum</i> by contrasting heat responses in male and female reproductive success between2022-01-01T00:00:00Z2022 Dec2025-07-08T03:10:24.022Z2025-04-04T12:43:58.757ZS-EPMC100922543706407710.1111/1365-2435.14204