Search results for "Poor body condition"

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Condition-dependent effects of corticosterone on a carotenoid-based begging signal in house sparrows

2008

International audience; Begging is a complex display involving a variety of different visual and auditory signals. Parents are thought to use these signals to adjust their investment in food provisioning. The mechanisms that ensure the honesty of begging displays as indicators of need have been recently investigated. It has been shown that levels of corticosterone (Cort), the hormone released during the stress response, increase during food shortage and are associated with an increased begging rate. In a recent study in house sparrows, although exogenous Cort increased begging rate, parents did not accordingly adjust their provisioning rate. Here, we tested the hypothesis that Cort might af…

0106 biological sciences01 natural sciencesNesting BehaviorFight-or-flight responseBehavioral Neurosciencechemistry.chemical_compoundEndocrinologyCorticosteroneAdaptation PsychologicalBeggingpolycyclic compoundsHouse sparrowCarotenoidchemistry.chemical_classificationCarotenoid0303 health sciencesFlange colorationPigmentationPoor body conditionhumanities[ SDE.MCG ] Environmental Sciences/Global ChangesSparrowshormones hormone substitutes and hormone antagonistsmedicine.medical_specialtyendocrine system[SDE.MCG]Environmental Sciences/Global ChangesParent–offspring conflictBiologyAffect (psychology)010603 evolutionary biology03 medical and health sciencesInternal medicinemedicinePasser domesticusAnimalsImmune responseCondition dependent030304 developmental biologyMouth[ SDE.BE ] Environmental Sciences/Biodiversity and EcologyEndocrine and Autonomic SystemsFeeding BehaviorCarotenoids[SDE.ES]Environmental Sciences/Environmental and SocietyAnimal CommunicationEndocrinologychemistryImmune SystemBody ConstitutionParent–offspring conflict[SDE.BE]Environmental Sciences/Biodiversity and EcologyFood DeprivationCorticosteronePhotic Stimulation[ SDE.ES ] Environmental Sciences/Environmental and Society
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