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Lemonnier C, Schull Q, Stier A, Boonstra R, Delahanty B, Lefol E, Durand L, Robin Jp, Criscuolo F, Bize P, Viblanc Va |
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Coping with socially stressful environments in colonial seabirds: a test of adaptive phenotype programming in king penguins |
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Peer-reviewed symposium |
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2021 |
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17émes journées scientifiques du cnfra, 26-27 mai 202, paris, france. oral, actes du colloque. |
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Coloniality is associated with various benefits and costs for animals affecting their fitness. Breeding colonies are heterogeneous both in terms of physical and social parameters, thus, breeding territories are of different quality relative to their location within the colony. In king penguins, increased conspecific density has been correlated with increased stress level in individual birds, suggesting a cost of colonial breeding. We used a cross-fostering approach to question the relationship linking breeding location, phenotype and reproduction success. We crossfostered eggs shortly after laying within and between high-and low-density colony areas. This design allowed us to unravel the influences of early genetic and maternal effects together with rearing environments on chick growth trajectories, stress physiology and survival. We tested whether chick phenotype is determined at birth to match their early environment or if higher social density conferred an advantage for reproduction. |
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yes |
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8105 |
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