Oecologia

, Volume 161, Issue 4, pp 849–855

Aromatic plants in nests of the blue tit Cyanistes caeruleus protect chicks from bacteria

Authors

    • Centre d’Ecologie Fonctionnelle et EvolutiveCNRS, UMR 5175
    • Department of BiologyUniversity of Bergen
  • Pascal Mirleau
    • EDB (Laboratoire Évolution et Diversité Biologique)Université de Toulouse UPS, UMR 5174
    • EDB (Laboratoire Évolution et Diversité Biologique)CNRS
    • Institut Méditerranéen d’Ecologie et de PaléoécologieUMR CNRS 6116, UMR IRD 193, Université Paul Cezanne Aix-Marseille III
  • Jacques Blondel
    • Centre d’Ecologie Fonctionnelle et EvolutiveCNRS, UMR 5175
  • Philippe Perret
    • Centre d’Ecologie Fonctionnelle et EvolutiveCNRS, UMR 5175
  • Marcel M. Lambrechts
    • Centre d’Ecologie Fonctionnelle et EvolutiveCNRS, UMR 5175
  • Philipp Heeb
    • EDB (Laboratoire Évolution et Diversité Biologique)Université de Toulouse UPS, UMR 5174
    • EDB (Laboratoire Évolution et Diversité Biologique)CNRS
Terrestrial Vertebrate Ecology - Original Paper

DOI: 10.1007/s00442-009-1418-6

Cite this article as:
Mennerat, A., Mirleau, P., Blondel, J. et al. Oecologia (2009) 161: 849. doi:10.1007/s00442-009-1418-6

Abstract

Several bird species add fresh fragments of plants which are rich in volatile secondary compounds to their nests. It has been suggested, although never tested, that birds use fresh plants to limit the growth of nest microorganisms. On Corsica, blue tits (Cyanistes caeruleus) incorporate fresh fragments of aromatic plants into their nests. These plants do not reduce infestation by nest ectoparasites, but have been shown to improve growth and condition of chicks at fledging. To understand the mechanisms underlying such benefits, we experimentally tested the effects of these plants on the bacteria living on blue tits. Aromatic plants significantly affected the structure of bacterial communities, in particular reducing bacterial richness on nestlings. In addition, in this population where there is a strong association between bacterial density and infestation by blood-sucking Protocalliphora blow fly larvae, these plants reduced bacterial density on the most infested chicks. Aromatic plants had no significant effect on the bacteria living on adult blue tits. This study provides the first evidence that fresh plants brought to the nests by adult birds limit bacterial richness and density on their chicks.

Keywords

Nest greeneryAromatic plantsBacterial communitiesCyanistes caeruleusProtocalliphora sp.

Copyright information

© Springer-Verlag 2009