Life stage-specific inbreeding depression in long-lived Pinaceae species depends on population connectivity.

ABSTRACT: Inbreeding depression (ID) is a fundamental selective pressure that shapes mating systems and population genetic structures in plants. Although it has been shown that ID varies over the life stages of shorter-lived plants, less is known about how the fitness effects of inbreeding vary across life stages in long-lived species. We conducted a literature survey in the Pinaceae, a tree family known to harbour some of the highest mutational loads ever reported. Using a meta-regression model, we investigated distributions of inbreeding depression over life stages, adjusting for effects of inbreeding levels and the genetic differentiation of populations within species. The final dataset contained 147 estimates of ID across life stages from 41 studies. 44 Fst estimates were collected from 40 peer-

SUBMITTER: Ahlinder J 

PROVIDER: S-EPMC8065042 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature