Positive correlation between helpers at nest and nestling immune response in a cooperative breeding bird

Autor: Gabriele Sorci, Elena Solís, Juliana Valencia, Carlos de la Cruz
Přispěvatelé: Parasitologie évolutive (PE), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Biología y Etología, Universidad de Extremadura (UEX)-Fac. Veterinaria, Area de Zoología, Universidad de Extremadura (UEX)-Fac. Ciencias, Biogéosciences [UMR 6282] [Dijon] (BGS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Centre National de la Recherche Scientifique (CNRS), Parasitologie évolutive ( PE ), École normale supérieure - Paris ( ENS Paris ) -Université Pierre et Marie Curie - Paris 6 ( UPMC ) -Centre National de la Recherche Scientifique ( CNRS ), Universidad de Extremadura-Fac. Veterinaria, Universidad de Extremadura-Fac. Ciencias, Biogéosciences [Dijon] ( BGS ), AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne ( UB ) -Centre National de la Recherche Scientifique ( CNRS ), École normale supérieure - Paris (ENS-PSL), Universidad de Extremadura - University of Extremadura (UEX)-Fac. Veterinaria, Universidad de Extremadura - University of Extremadura (UEX)-Fac. Ciencias, Biogéosciences [UMR 6282] (BGS), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)
Rok vydání: 2006
Předmět:
Zdroj: Behavioural ecology and sociobiology
Behavioural ecology and sociobiology, 2006, 60 (3), pp.399. ⟨10.1007/s00265-006-0179-z⟩
Behavioural ecology and sociobiology, 2006, 60 (3), pp.399. 〈10.1007/s00265-006-0179-z〉
Behavioral Ecology and Sociobiology
Behavioral Ecology and Sociobiology, 2006, 60 (3), pp.399. ⟨10.1007/s00265-006-0179-z⟩
ISSN: 1432-0762
0340-5443
DOI: 10.1007/s00265-006-0179-z
Popis: In cooperatively breeding species, helpers may contribute to the success of the brood by increasing the number of independent offspring, but also, they may affect offspring condition and, hence, their survival and recruitment into the breeding population. This second type of benefits is rarely included in theoretical models or assessed in field studies. Immune response is a good proxy of individual quality and fitness, and there is good evidence that the performance of the immune system of chicks during the nestling phase is related to their chances of survival and future reproduction. However, no study has so far explored whether helpers at the nest might contribute to enhance immune functioning of nestlings in species with a cooperative breeding system. Here we investigate this issue in the azure-winged magpie (Cyanopica cyanus) and found for the first time a positive correlation between the number of helpers at nest and the cell-mediated immune response of nestlings. This effect was not explained by a general improvement of body condition of chicks because it was independent of individual variation in body mass or tarsus length. Our results suggest that helping can have subtle effects on the quality of offspring that may influence their survival and future reproduction.
Databáze: OpenAIRE
Externí odkaz: