Search results for "MATERNAL TESTOSTERONE"

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Prenatal androgen exposure modulates cellular and humoral immune function of black-headed gull chicks

2005

Avian eggs contain considerable amounts of maternal yolk androgens, which have been shown to beneficially influence the physiology and behaviour of the chick. As androgens may suppress immune functions, they may also entail costs for the chick. This is particularly relevant for colonial species, such as the black-headed gull (Larus ridibundus), in which the aggregation of large numbers of birds during the breeding season enhances the risk of infectious diseases for the hatching chick.To test the effect of maternal yolk androgens on the chick's immune function, we experimentally manipulated, in a field study, yolk androgen levels within the physiological range by in ovo injection of either a…

WITHIN-CLUTCHCharadriiformesEVOLUTIONARY ECOLOGYantibodyhumoral immunityECOLOGICAL IMMUNOLOGYTestosteroneNetherlandsLIFE-SPANGeneral Environmental ScienceTRADE-OFFSGeneral MedicineEgg Yolkembryonic structuresAndrogensLARUS-RIDIBUNDUSGeneral Agricultural and Biological SciencesResearch ArticleYOLK TESTOSTERONEmedicine.medical_specialtyanimal structuresfood.ingredientmedicine.drug_classOffspringMATERNAL TESTOSTERONEEnzyme-Linked Immunosorbent AssayphytohemagglutininBiologyIn ovoAntibodiesGeneral Biochemistry Genetics and Molecular BiologyImmune systemfoodPASSER-DOMESTICUSImmunityYolkInternal medicinemedicineAnimalsEGGPhytohemagglutininsBiologyGeneral Immunology and MicrobiologyBody WeightImmunitylipopolysaccharidesAndrogenEndocrinologytestosteroneHumoral immunityProceedings of the Royal Society B: Biological Sciences
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