Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants.

Détails

ID Serval
serval:BIB_6BE32B44A43B
Type
Article: article d'un périodique ou d'un magazine.
Sous-type
Lettre (letter): communication adressée à l'éditeur.
Collection
Publications
Titre
Senescence and age-specific trade-offs between reproduction and survival in female Asian elephants.
Périodique
Ecology Letters
Auteur⸱e⸱s
Robinson M.R., Mar K.U., Lummaa V.
ISSN
1461-0248 (Electronic)
ISSN-L
1461-023X
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
15
Numéro
3
Pages
260-266
Langue
anglais
Résumé
Although studies on laboratory species and natural populations of vertebrates have shown reproduction to impair later performance, little is known of the age-specific associations between reproduction and survival, and how such findings apply to the ageing of large, long-lived species. Herein we develop a framework to examine population-level patterns of reproduction and survival across lifespan in long-lived organisms, and decompose those changes into individual-level effects, and the effects of age-specific trade-offs between fitness components. We apply this to an extensive longitudinal dataset on female semi-captive Asian timber elephants (Elephas maximus) and report the first evidence of age-specific fitness declines that are driven by age-specific associations between fitness components in a long-lived mammal. Associations between reproduction and survival are positive in early life, but negative in later life with up to 71% of later-life survival declines associated with investing in the production of offspring within this population of this critically endangered species.

Mots-clé
Age Factors, Aging, Animals, Elephants/physiology, Female, Models, Biological, Models, Statistical, Reproduction, Survival Rate
Pubmed
Web of science
Création de la notice
06/12/2017 13:42
Dernière modification de la notice
20/08/2019 15:26
Données d'usage