Skip to main content
Article thumbnail
Location of Repository

Nematode parasites reduce cartenoid-based signalling in male red grouse

By Jesus Martinez-Padilla, Francois Mougeot, Lorenzo Perez-Rodriquez and Gary R. Bortolotti

Abstract

Carotenoids determine the yellow–red colours of many ornaments, which often function as signals of quality. Carotenoid-based signalling may reliably advertise health and should be particularly sensitive to parasite infections. Nematodes are among the commonest parasites of vertebrates, with well-documented negative effects on their hosts. However, to date, little is known about the effects that these parasites may have on carotenoid-based signalling. Tetraonid birds (grouse) exhibit supra-orbital combs, which are bright integumentary ornaments pigmented by carotenoids. We tested the effect of the nematode parasite Trichostrongylus tenuis on signalling in free-living male red grouse Lagopus lagopus scoticus. We show that experimentally reduced nematode infection increases plasma carotenoid concentration and comb redness, demonstrating for the first time that nematodes can influence carotenoid-based signals. \ud \u

Topics: Biology and Microbiology
Year: 2007
DOI identifier: 10.1098/rsbl.2006.0593
OAI identifier: oai:nora.nerc.ac.uk:8776
Download PDF:
Sorry, we are unable to provide the full text but you may find it at the following location(s):
  • http://rsbl.royalsocietypublis... (external link)
  • https://doi.org/10.1098/rsbl.2... (external link)
  • https://doi.org/10.1098/rsbl.2... (external link)
  • http://nora.nerc.ac.uk/id/epri... (external link)
  • Suggested articles


    To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.