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- W2000965679 endingPage "2060" @default.
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- W2000965679 abstract "Individual variation in reproductive success is a key feature of evolution, but also has important implications for predicting population responses to variable environments. Although such individual variation in reproductive outcomes has been reported in numerous studies, most analyses to date have not considered whether these realized differences were due to latent individual heterogeneity in reproduction or merely random chance causing different outcomes among like individuals. Furthermore, latent heterogeneity in fitness components might be expressed differently in contrasted environmental conditions, an issue that has only rarely been investigated. Here, we assessed (i) the potential existence of latent individual heterogeneity and (ii) the nature of its expression (fixed vs. variable) in a population of female Weddell seals (Leptonychotes weddellii), using a hierarchical modeling approach on a 30-year mark-recapture data set consisting of 954 individual encounter histories. We found strong support for the existence of latent individual heterogeneity in the population, with robust individuals expected to produce twice as many pups as frail individuals. Moreover, the expression of individual heterogeneity appeared consistent, with only mild evidence that it might be amplified when environmental conditions are severe. Finally, the explicit modeling of individual heterogeneity allowed us to detect a substantial cost of reproduction that was not evidenced when the heterogeneity was ignored." @default.
- W2000965679 created "2016-06-24" @default.
- W2000965679 creator A5008173550 @default.
- W2000965679 creator A5027680128 @default.
- W2000965679 creator A5035730993 @default.
- W2000965679 creator A5065813869 @default.
- W2000965679 date "2013-05-31" @default.
- W2000965679 modified "2023-10-04" @default.
- W2000965679 title "Individual heterogeneity in reproductive rates and cost of reproduction in a long-lived vertebrate" @default.
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- W2000965679 doi "https://doi.org/10.1002/ece3.615" @default.
- W2000965679 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3728946" @default.
- W2000965679 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/23919151" @default.
- W2000965679 hasPublicationYear "2013" @default.
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