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Alejandra Nuǹz-de la Mora
National Autonomous University of Mexico
Challenge hypothesisBoobySulidaeAggressionCorticosterone
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#1Alejandra Nuǹz-de la Mora (UNAM: National Autonomous University of Mexico)H-Index: 1
#2Hugh Drummond (UNAM: National Autonomous University of Mexico)H-Index: 33
Last. John C. Wingfield (UNAM: National Autonomous University of Mexico)H-Index: 110
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In the blue-footed booby (Sula nebouxii), the first-hatched chick aggressively dominates its sibling and sometimes kills it when food is in short supply. To investigate the endocrine correlates of dominance-subordinance and hunger-induced agonism, we deprived 15–20-d-old single-chick and two-chick broods of food during 48 h by taping chicks' necks to prevent ingestion of parentally provided food (a protocol used previously and known to elicit escalated sibling fighting). We monitored weight and ...
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