Age and size at maturity in a patchy environment: fitness maximization versus evolutionary stability

Détails

ID Serval
serval:BIB_5C24B03BC65B
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Age and size at maturity in a patchy environment: fitness maximization versus evolutionary stability
Périodique
Oikos
Auteur⸱e⸱s
Kawecki T.J.
ISSN
0030-1299
Statut éditorial
Publié
Date de publication
1993
Peer-reviewed
Oui
Volume
66
Numéro
2
Pages
309-317
Langue
anglais
Notes
http://www.jstor.org/stable/3544819
Résumé
The evolution of age at maturity under exploitation competition in a patchy environment is modelled using both an analytical approach and computer simulations. Maturity is defined as the switch from allocating resources to growth to allocating them to reproduction, and fitness is measured as lifetime energy allocation to reproduction. Explicit consideration of resources and their exploitation brings about frequency dependence. As a consequence, whenever two or more individuals jointly exploit a patch, the ESS is to mature later and at larger size than at the age and size maximizing the fitness measure. An adaptive response to the presence of competitors thus aggravates the depression of fecundity resulting from competitive resource depletion. In some cases two individuals in a patch should grow larger and mature later than a single individual in a patch of the same size, even though in the first case the individual resource share is halved. The effects of patch size, number of competitors, within-patch mortality and whole-patch destruction rate on the predicted age and size at maturity are discussed.
Mots-clé
LIFE-HISTORY STRATEGIES, DEPENDENT SELECTION, COMPETITION, REPRODUCTION, COEVOLUTION, POPULATIONS, HEIGHT, GROWTH
Web of science
Création de la notice
19/11/2007 10:28
Dernière modification de la notice
20/08/2019 14:14
Données d'usage