Maternal androgens increase sibling aggression, dominance, and competitive ability in the siblicidal black-legged kittiwake (Rissa tridactyla).

por Martina S Müller, Yvonne Roelofs, Kjell Einar Erikstad, Ton G G Groothuis
Publicado 2012

Penguin chicks benefit from elevated yolk androgen levels under sibling competition.

por Maud Poisbleau, Wendt Müller, David Carslake, Laurent Demongin, Ton G G Groothuis, Jeff Van Camp, Marcel Eens
Publicado 2012