Data from: A high quality pedigree and genetic markers both reveal inbreeding depression for quality but not survival in a cooperative mammal

Inbreeding depression, the reduced fitness of offspring of closely related
parents, is commonplace in both captive and wild populations and has
important consequences for conservation and mating system evolution.
However, because of the difficulty of collecting pedigree and life history
data from wild populations, relatively few studies have been able to
compare inbreeding depression for traits at different points in the life
cycle. Moreover, pedigrees give the expected proportion of the genome that
is identical by descent (IBDg) whereas in theory with enough molecular
markers realised IBDg can be quantified directly. We therefore
investigated inbreeding depression for multiple life-history traits in a
wild population of banded mongooses using pedigree-based inbreeding
coefficients (fped) and standardised multilocus heterozygosity (sMLH)
measured at 35-43 microsatellites. Within an information theoretic
framework, we evaluated support for either fped or sMLH as inbreeding
terms and used sequential regression to determine whether the residuals of
sMLH on fped explain fitness variation above and beyond fped. We found no
evidence of inbreeding depression for survival, either before or after
nutritional independence. By contrast, inbreeding was negatively
associated with two quality related traits, yearling body mass and annual
male reproductive success. Yearling body mass was associated with fped but
not sMLH, while male annual reproductive success was best explained by
both fped and residual sMLH. Thus, our study not only uncovers variation
in the extent to which different traits show inbreeding depression, but
also reveals trait-specific differences in the ability of pedigrees and
molecular markers to explain fitness variation and suggests that for
certain traits genetic markers may capture variation in realised IBDg
above and beyond the pedigree expectation.