10/18/2023 0 Comments Fallout shelter avoid inbreedingEvolution of inbreeding avoidance and inbreeding preference through mate choice among interacting relatives. in Sexual Selection and Reproductive Competition in Insects (eds Blum, M. Genetics and Analysis of Quantitative Traits (Sinauer Associates, 1998).Ĭharlesworth, D. Inbreeding avoidance, tolerance, or preference in animals? Trends Ecol. Our findings highlight the need to rethink the widely held view that inbreeding avoidance is a given in experimental studies. Yet, we found no difference in kin avoidance between males and females, choice and no-choice experiments, mated and virgin animals or between humans and animals. ![]() The significance of a variety of moderators was explored using meta-regressions, revealing that the degree of relatedness and prior experience with kin explained some variation in the effect sizes. Instead, unbiased mating with regards to kinship appears widespread across animals and experimental conditions. Our meta-analysis revealed little support for the widely held view that animals avoid mating with kin, despite clear evidence of publication bias. Here, we synthesized 677 effect sizes from 139 experimental studies of mate choice for kin versus non-kin in diploid animals, representing 40 years of research, using a meta-analytical approach. This mismatch between empirical and theoretical expectations generates uncertainty as to the prevalence of inbreeding avoidance in animals. ![]() ![]() Yet, theoretical models predict that unbiased mating with regards to kinship should be common, and that under some conditions, the inclusive fitness benefits associated with inbreeding can even lead to a preference for mating with kin. Animals are usually expected to avoid mating with relatives (kin avoidance) as incestuous mating can lead to the expression of inbreeding depression.
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