Search results for "carotenoid-based signals"

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Dynamics of PHA-induced immune response and plasma carotenoids in birds: should we have a closer look?

2009

SUMMARY Allocation trade-offs of limited resources are thought to ensure the honesty of sexual signals and are often studied using controlled immune challenges. One such trade-off between immunity and ornaments is that involving carotenoids. Phytohemagglutinin (PHA)-induced immune response is a widely used immune challenge, yet more details on the underlying physiological mechanisms and potential costs are needed. We investigated the temporal dynamics of PHA-induced immune response and associated changes in blood carotenoids, body mass and a carotenoid-based coloured signal. We found variation in individual response patterns to PHA after peak swelling was reached, with birds showing either …

0106 biological sciencesMalePhysiology[ SDV.IMM.IA ] Life Sciences [q-bio]/Immunology/Adaptive immunology01 natural sciencesSongbirds[ SDV.EE.IEO ] Life Sciences [q-bio]/Ecology environment/SymbiosisBody Sizebill colourCarotenoidchemistry.chemical_classification0303 health sciencesimmunocompetenceBeakOrnamentsblackbird[SDV.IMM.IA]Life Sciences [q-bio]/Immunology/Adaptive immunologymedicine.symptomImmunocompetencemedicine.medical_specialtycell-mediated immune responseInflammationchemical and pharmacologic phenomenaAquatic ScienceBiology010603 evolutionary biology03 medical and health sciencesImmune systemImmunityInternal medicinemedicineAnimalsPhytohemagglutininsMolecular BiologyEcology Evolution Behavior and Systematics030304 developmental biologyInflammationimmunocompetence.[ SDE.BE ] Environmental Sciences/Biodiversity and EcologyCell-mediated immune responseCarotenoidsEndocrinologychemistryInsect ScienceImmunologycarotenoid-based signalsAnimal Science and Zoology[SDE.BE]Environmental Sciences/Biodiversity and EcologyMitogensLimited resources[SDV.EE.IEO]Life Sciences [q-bio]/Ecology environment/SymbiosisThe Journal of experimental biology
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