50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals.

ABSTRACT: Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella, are particularly interesting in this regard, as they are concomitantly reliant on both ice-associated prey and ice-free coastal breeding areas. We reconstructed the history of this species through the Last Glacial Maximum (LGM) using genomic sequence data from seals across their range. Population size trends and divergence events were investigated using continuous-time size estimation analysis and divergence time estimation models. The combined results indicated that a panmictic population present prior to the LGM split into two small refugial populations during peak ice extent. Following ic

SUBMITTER: Cleary AC 

PROVIDER: S-EPMC8525082 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature