Sibling rivalry in black-legged kittiwakes

Adriana Vallarino, université de Glasgow.

vendredi 28 novembre 2008, à 11 heures, amphithéâtre Mariotte 

Sibling rivalry is widely spread through avian species, but siblicide as a consequence of this aggression is not common. Black-legged kittiwakes (Rissa tridactyla) kill their siblings when the amount of food available is scarce. Several asymmetries present within a brood make siblicide possible (e.g. egg components, age and size). In the present talk I will discuss the influence of egg size and egg components on the chicks’ rivalry, social position, stress response and fledging success after experimentally manipulating these asymmetries in the field.

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Sibling rivalry in black-legged kittiwakes

Adriana Vallarino, université de Glasgow.

vendredi 28 novembre 2008, à 11 heures, amphithéâtre Mariotte 

 

Sibling rivalry is widely spread through avian species, but siblicide as a consequence of this aggression is not common. Black-legged kittiwakes (Rissa tridactyla) kill their siblings when the amount of food available is scarce. Several asymmetries present within a brood make siblicide possible (e.g. egg components, age and size). In the present talk I will discuss the influence of egg size and egg components on the chicks’ rivalry, social position, stress response and fledging success after experimentally manipulating these asymmetries in the field.

extrait:

lien_externe:

titre:

Sibling rivalry in black-legged kittiwakes

intervenant:

Adriana Vallarino

date:

vendredi 28 novembre 2008