Intra-clutch ratio of yolk progesterone level changes with laying date in rockhopper penguins: a strategy to influence brood reduction?

Hatching asynchrony in avian species generally leads to a size hierarchy among siblings, favouring the first-hatched chicks. Maternally deposited hormones affect the embryo and chick's physiology and behaviour. It has been observed that progesterone, a hormone present at higher levels than othe...

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Auteurs principaux: Maud Poisbleau, Laurent Demongin, Charline Parenteau, Marcel Eens
Format: article
Langue:EN
Publié: Public Library of Science (PLoS) 2011
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R
Q
Accès en ligne:https://doaj.org/article/ec7e521f33414531aeeb3f70f377a673
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