Global flyway evolution in red knots Calidris canutus and genetic evidence for a Nearctic refugium.

ABSTRACT: Present-day ecology and population structure are the legacies of past climate and habitat perturbations, and this is particularly true for species that are widely distributed at high latitudes. The red knot, Calidris canutus, is an arctic-breeding, long-distance migratory shorebird with six recognized subspecies defined by differences in morphology, migration behavior, and annual cycle phenology, in a global distribution thought to have arisen just since the last glacial maximum (LGM). We used nextRAD sequencing of 10,881 single-nucleotide polymorphisms (SNPs) to assess the neutral genetic structure and phylogeographic history of 172 red knots representing all known global breeding populations. Using population genetics approaches, including model-based scenario-testing in an approximate B

SUBMITTER: Conklin JR 

PROVIDER: S-EPMC9545425 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature