Life span and reproductive cost explain interspecific variation in the optimal onset of reproduction.

Détails

Ressource 1Télécharger: BIB_0CF96A5AD725.P001.pdf (873.62 [Ko])
Etat: Public
Version: Final published version
ID Serval
serval:BIB_0CF96A5AD725
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Life span and reproductive cost explain interspecific variation in the optimal onset of reproduction.
Périodique
Evolution; international journal of organic evolution
Auteur(s)
Mourocq E., Bize P., Bouwhuis S., Bradley R., Charmantier A., de la Cruz C., Drobniak S.M., Espie R.H., Herényi M., Hötker H., Krüger O., Marzluff J., Møller A.P., Nakagawa S., Phillips R.A., Radford A.N., Roulin A., Török J., Valencia J., van de Pol M., Warkentin I.G., Winney I.S., Wood A.G., Griesser M.
ISSN
1558-5646 (Electronic)
ISSN-L
0014-3820
Statut éditorial
Publié
Date de publication
02/2016
Peer-reviewed
Oui
Volume
70
Numéro
2
Pages
296-313
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
Fitness can be profoundly influenced by the age at first reproduction (AFR), but to date the AFR-fitness relationship only has been investigated intraspecifically. Here, we investigated the relationship between AFR and average lifetime reproductive success (LRS) across 34 bird species. We assessed differences in the deviation of the Optimal AFR (i.e., the species-specific AFR associated with the highest LRS) from the age at sexual maturity, considering potential effects of life history as well as social and ecological factors. Most individuals adopted the species-specific Optimal AFR and both the mean and Optimal AFR of species correlated positively with life span. Interspecific deviations of the Optimal AFR were associated with indices reflecting a change in LRS or survival as a function of AFR: a delayed AFR was beneficial in species where early AFR was associated with a decrease in subsequent survival or reproductive output. Overall, our results suggest that a delayed onset of reproduction beyond maturity is an optimal strategy explained by a long life span and costs of early reproduction. By providing the first empirical confirmations of key predictions of life-history theory across species, this study contributes to a better understanding of life-history evolution.

Mots-clé
Animals, Birds/genetics, Birds/growth & development, Birds/physiology, Evolution, Molecular, Genetic Speciation, Genetic Variation, Longevity/genetics, Reproduction/genetics, Sexual Maturation/genetics
Pubmed
Création de la notice
04/01/2016 21:11
Dernière modification de la notice
20/08/2019 12:34
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