Why are offspring born larger when it is colder? Phenotypic plasticity for offspring size in the cladoceran Simocephalus vetulus (Müller)

Détails

ID Serval
serval:BIB_00D0EA334A0D
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Why are offspring born larger when it is colder? Phenotypic plasticity for offspring size in the cladoceran Simocephalus vetulus (Müller)
Périodique
Functional Ecology
Auteur⸱e⸱s
Perrin N.
ISSN
0269-8463
Statut éditorial
Publié
Date de publication
1988
Peer-reviewed
Oui
Volume
2
Numéro
3
Pages
283-288
Langue
anglais
Notes
IDDBEEB9EFDB69_
http://www.jstor.org/stable/2389399
Résumé
It has been predicted on theorerical grounds (Sibly & Calow, 1983; Taylor & Williams, 1984) that optimal offspring size should be highly sensitive to juvenile growth and survival rates. To test such models, genetically-identical individuals of Simicephalus vetulus were reared at different temperatures and monitored for offspring size and juvenile growth rate. As adult size correlates negatively with temperature, an analysis of covariance was performed to separate the effects of temperature and maternal size. The result is that offspring size indeed correlates negatively with juvenile growth rate. Comparisons are made with field observation of several authors on seasonal variation of offspring size and alternative explanations are discussed. It is concluded that present experiments support the prediction of the theoretical models.
Mots-clé
Cladoceran: offsrping size, groeth, phenotypic plasticity, life-history theory
Web of science
Création de la notice
24/01/2008 18:53
Dernière modification de la notice
20/08/2019 13:23
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