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Density-dependent competition and selection on immune function in genetic lizard morphs

Författare

Summary, in English

Density-dependent territorial interactions have been suggested to cause immunosuppression and thereby decrease fitness, but empirical support from natural populations is lacking. Data from a natural lizard population (Uta stansburiana) showed that breeding females surrounded by many territorial neighbors had suppressed immune function. Furthermore, variation in immunological condition had different effects on the fitness of the two heritable female throat-color morphs in this population. These interactive fitness effects caused correlational selection between female throat color and immune responsiveness. Population genetic theory predicts that this should have lead to the buildup and preservation of a genetic correlation between female morphotype and immunological condition. Accordingly, the throat color of a female was genetically correlated (r(A) = -1.36; SE = 0.55) with her daughter's immune responsiveness.

Publiceringsår

2001

Språk

Engelska

Sidor

12561-12565

Publikation/Tidskrift/Serie

Proceedings of the National Academy of Sciences

Volym

98

Issue

22

Dokumenttyp

Artikel i tidskrift

Förlag

National Academy of Sciences

Ämne

  • Biological Sciences

Status

Published

Forskningsgrupp

  • Evolution and Ecology of Phenotypes in Nature

ISBN/ISSN/Övrigt

  • ISSN: 1091-6490