, 159:697 | Cite as

Rearing environment effects on immune defence in blue tit Cyanistes caeruleus nestlings

Physiological Ecology - Original Paper


Rearing conditions may influence ontogeny and functioning of the immune system. Activation of different mechanisms involved in host disease resistance and their internal regulation can be affected by intrinsic and extrinsic factors influencing development. I investigated how rearing environment can influence associations between humoral and cellular constituents of immune defence in nestling blue tits (Cyanistes caeruleus). The ability to mount a cell-mediated immune response was estimated as a hypersensitivity reaction to phytohaemagglutinin, and the ontogeny of humoral immunity was determined by assessing circulating levels of total IgG in 15-day-old nestlings. Heterogeneity in rearing conditions was evoked by placing nest-boxes in areas differing in habitat structural characteristics, and examining natural variation in nest ectoparasite infestations, hatching date, brood size and brood sex-ratio. Habitat characteristics, parasitism and hatching date may shape associations between different components of the immune system in developing birds. I discuss the effects of rearing conditions on the interaction between different arms of the immune system and the implications for understanding negative correlations within the immune system at the individual and brood level.


Circulating immunoglobulins Ectoparasites Forest structure Immune function Phytohaemagglutinin 



I thank J. Moreno, A.P. Møller and two anonymous reviewers for valuable comments on the manuscript. The study was supported financially by projects 07M/0137/2000 (Comunidad de Madrid) to L.M. Carrascal and CGL2004-00787/BOS to J. Moreno (Ministerio de Ciencia y Tecnología). E.A. was supported by a fellowship from El Ventorrillo-CSIC during field and laboratory work. During final analyses and writing, support to E.A. was provided by Laboratoire de Parasitologie Evolutive UPMC UMR 7103, France. J.A. Fargallo, J.J. Sanz, S. Merino and A. Martin were of great help in the field and in different phases of the project. I thank J. Martinez, J.A. Davila and A. Machordon for advice in laboratory techniques. Museo Nacional de Ciencias Naturales (CSIC) and El-Ventorrillo field station provided infrastructure and logistical support during field and laboratory work. Capture of birds and fieldwork in the study area was conducted under authorization from Comunidad de Madrid and Ministerio de Medio Ambiente, Spain.


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  1. 1.Laboratoire de Parasitologie EvolutiveUPMC Univ Paris 06, CNRS UMR 7103ParisFrance
  2. 2.Centre d’Ecologie Fonctionnelle et Evolutive, CNRS UMR 5175Montpellier cedex 5France

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