Little evidence of inbreeding depression for birth mass, survival and growth in Antarctic fur seal pups.

ABSTRACT: Inbreeding depression, the loss of offspring fitness due to consanguineous mating, is generally detrimental for individual performance and population viability. We investigated inbreeding effects in a declining population of Antarctic fur seals (Arctocephalus gazella) at Bird Island, South Georgia. Here, localised warming has reduced the availability of the seal's staple diet, Antarctic krill, leading to a temporal increase in the strength of selection against inbred offspring, which are increasingly failing to recruit into the adult breeding population. However, it remains unclear whether selection operates before or after nutritional independence at weaning. We therefore used microsatellite data from 885 pups and their mothers, and SNP array data from 98 mother-offspring pairs, to quanti

SUBMITTER: Paijmans AJ 

PROVIDER: S-EPMC11144264 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature