Data from: Phenotypic selection and covariation in the life‐history traits of elephant seals: heavier offspring gain a double selective advantage ...

• Main Authors: Oosthuizen, W. Chris, Altwegg, Res, Nevoux, Marie, Bester, Marthán N., De Bruyn, P.J. Nico, De Bruyn, P. J. Nico
• Format: Dataset
• Language: English
• Published: Dryad 2017
• Subjects: individual heterogeneity; Mirounga leonina; early conditions; phenotypic selection; Elephant Seals; Southern Elephant Seals
• Online Access: https://dx.doi.org/10.5061/dryad.6275j; https://datadryad.org/stash/dataset/doi:10.5061/dryad.6275j

Early developmental conditions contribute to individual heterogeneity of both phenotypic traits and fitness components, ultimately affecting population dynamics. Although the demographic consequences of ontogenic growth are best quantified using an integrated measure of fitness, most analyses to date have instead studied individual fitness components in isolation. Here, wWe estimated phenotypic selection on weaning mass in female southern elephant seals (Mirounga leonina) by analyzing individual-based data collected between 1986 and 2016 with capture-recapture and matrix projection models. In support of a hypothesis predicting a gradual decrease of weaning mass effects with time since weaning (the replacement hypothesis), we found that the estimated effects of weaning mass on future survival and recruitment probability was of intermediate duration (rather than transient or permanent). Heavier female offspring had improved odds of survival in early life and a higher probability to recruit at an early age. The ... : Encounter history matrix (Headed format for E-SURGE)H:C1 to H:C 30: (0) - not seen (1) Prebreeder2 (2)Prebreeder1 (3) Breeder2 (4)Breeder1 S:Sample $COV:Tagtype Inner or outer interdigital tag COV:mass: standardized weaning mass COV:mass2: standardized weaning mass squared COV:massSP1: weaning mass spline 1 COV:massSP2: weaning mass spline 22017_HEADED EHM 746 individuals.txt ...