INTRALOCUS SEXUAL CONFLICT AND ENVIRONMENTAL STRESS

• DOI: 10.1111/evo.12439
• Publication Date: 2014-04-25T17:23:23Z
• Authors: David Berger; Karl Grieshop; Martin I. Lind; Julieta Goenaga; Alexei A. Maklakov; Göran Arnqvist
• Keywords: Environmental stress

Intralocus sexual conflict (IaSC) occurs when selection at a given locus favors different alleles in males and females, placing fundamental constraint on adaptation. However, the relative impact of IaSC adaptation may become reduced stressful environments that expose conditionally deleterious mutations to selection. The genetic correlation for fitness between females (rMF) provides quantification across genome. We compared benign (29°C) (36°C) temperature by estimating rMFs two natural populations seed beetle Callosobruchus maculatus using isofemale lines. In one population, we found substantial under conditions signified negative rMF (−0.51) and, as predicted, significant reduction stress reversed positive (0.21). other population displayed low both temperatures (rMF: 0.38; 0.40). populations, lines harboring beneficial but detrimental tended show overall stress. These results offer support suggest environmentally sensitive are sexually selected mediate changes IaSC. discuss implications adaptive evolution reproducing populations.