Data from: Heritability of body size in the polar bears of Western Hudson Bay ...

• Main Authors: Malenfant, René M., Davis, Corey S., Richardson, Evan S., Lunn, Nicholas J., Coltman, David W.
• Format: Dataset
• Language: English
• Published: Dryad 2023
• Subjects: Infinium BeadChip; animal model; single-nucleotide polymorphism; Holocene; Ursus maritimus; Canada; Hudson; Hudson Bay; Churchill
• Online Access: https://dx.doi.org/10.5061/dryad.23d8v; https://datadryad.org/stash/dataset/doi:10.5061/dryad.23d8v

Among polar bears (Ursus maritimus), fitness is dependent on body size through males' abilities to win mates, females' abilities to provide for their young, and all bears' abilities to survive increasingly longer fasting periods caused by climate change. In the Western Hudson Bay subpopulation (near Churchill, Manitoba, Canada), polar bears have declined in body size and condition, but nothing is known about the genetic underpinnings of body size variation, which may be subject to natural selection. Here, we combine a 4449-individual pedigree and an array of 5433 single-nucleotide polymorphisms (SNPs) to provide the first quantitative genetics study of polar bears. We used animal models to estimate heritability (h2) among polar bears handled between 1966 and 2011, obtaining h2 estimates of 0.34-0.48 for strictly skeletal traits and 0.18 for axillary girth (which is also dependent on fatness). We genotyped 859 individuals with the SNP array to test for marker-trait association and combined p-values over ... : Western Hudson Bay pedigree (TXT)Tab-delimited text file formatted for use in R (i.e., unknown parents are indicated with NA.) For use in ASReml, the data should be reformatted as columns id, sire, dam with "0" used to indicate unknown parents. For details of the pedigree, see doi: 10.1007/s00300-015-1871-0pedigree.txtSNP genotypes (ZIP)Raw SNP genotypes in PLINK format (i.e., .ped & .map file) before quality-control filtering.genotypes.zipLOCO RepeatABEL R scriptImplements a leave-one-chromosome-out GWAS using RepeatABELrepeatabel_loco.rRepeatABEL GWAS R scriptConducts a vanilla GWAS using RepeatABELrepeatabel.rField DataPhenotypes for adult polar bears used for heritability calculations and GWASphenotypes.csv ...