Understanding the evolutionary dynamics of inbreeding and inbreeding depression requires unbiased estimation of inbreeding depression across diverse mating systems. However, studies estimating inbreeding depression often measure inbreeding with error, for example, based on pedigree data derived from observed parental behavior that ignore paternity error stemming from multiple mating. Such paternity error causes error in estimated coefficients of inbreeding (f) and reproductive success and could bias estimates of inbreeding depression. We used complete "apparent" pedigree data compiled from observed parental behavior and analogous "actual" pedigree data comprising genetic parentage to quantify effects of paternity error stemming from extra-pair reproduction on estimates of f, reproductive success, and inbreeding depression in free-living song sparrows (Melospiza melodia). Paternity error caused widespread error in estimates of f and male reproductive success, causing inbreeding depression in male and female annual and lifetime reproductive success and juvenile male survival to be substantially underestimated. Conversely, inbreeding depression in adult male survival tended to be overestimated when paternity error was ignored. Pedigree error stemming from extra-pair reproduction therefore caused substantial and divergent bias in estimates of inbreeding depression that could bias tests of evolutionary theories regarding inbreeding and inbreeding depression and their links to variation in mating system.
- measurement error
- lethal equivalents
- conservation genetics
- lifetime reproductive success
- sparrows melospiza-melodia
- wild bird population
- song sparrows
- Darwins finches
FingerprintDive into the research topics of 'Pedigree error due to extra-pair reproduction substantially biases estimates of inbreeding depression'. Together they form a unique fingerprint.
Data from: Pedigree error due to extra-pair reproduction substantially biases estimates of inbreeding depression
Reid, J. (Creator), Keller, L. F. (Creator), Marr, A. B. (Creator), Nietlisbach, P. (Creator), Sardell, R. J. (Creator) & Arcese, P. (Creator), Dryad Digital Repository, 23 Oct 2013