Naturwissenschaften

, 98:897 | Cite as

The ornament–condition relationship varies with parasite abundance at population level in a female bird

  • Pablo Vergara
  • Jesús Martínez-Padilla
  • Stephen M. Redpath
  • Francois Mougeot
Short Communication

Abstract

Environmental heterogeneity is expected to create variation in the ornament–condition relationship. This topic has been studied in males with less attention being given to females. Here, we explore inter-population variation in the relationship between the size of a male-like trait, supra-orbital combs, and body mass in female red grouse Lagopus lagopus scoticus. We used the abundance of the nematode Trichostrongylus tenuis, a parasite with strong negative effects on this species, as a proxy of environmental conditions. We studied six populations over 5 years and showed that the comb size–body mass relationship varied with mean parasite abundance, with stronger ornament–condition relationships in populations with higher parasite infection levels. Our study supports the idea that environmental conditions, and in particular parasite infection levels, may affect the reliability of female ornaments as condition indicators.

Keywords

Environmental conditions Lagopus lagopus scoticus Secondary sexual traits Sexual selection Trichostrongylus tenuis 

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Pablo Vergara
    • 1
  • Jesús Martínez-Padilla
    • 1
    • 2
  • Stephen M. Redpath
    • 3
  • Francois Mougeot
    • 4
  1. 1.School of Biological SciencesUniversity of AberdeenAberdeenUK
  2. 2.Museo Nacional de Ciencias Naturales-CSICMadridSpain
  3. 3.Aberdeen Centre for Environmental Sustainability (ACES)University of Aberdeen & The Macaulay Institute, School of Biological SciencesAberdeenUK
  4. 4.Estación Experimental de Zonas Áridas (EEZA, CSIC)AlmeríaSpain

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