Nestling immune response to phytohaemagglutinin is not heritable in collared flycatchers
2007 (English)In: Biology Letters, ISSN 1744-9561, E-ISSN 1744-957X, Vol. 3, no 4, 418-421 p.Article in journal (Refereed) Published
The response to intradermally injected phytohaemagglutinin (PHA-response) is a commonly used quantification of avian immunocompetence (the ability to resist pathogens). Parasite-mediated sexual selection requires heritable immunocompetence, but evidence for heritability of PHA-response in birds largely stems from full-sib comparisons. Using an animal model approach, we quantified the narrow-sense heritability of PHA-response in 1626 collared flycatcher (Ficedula albicollis) nestlings from 332 families, most of which were cross-fostered. Nestling PHA-response was not significantly heritable (h2=0.06±0.10), but was subject to non-heritable nest-of-origin effects (10% of variation). Our findings illustrate that full-sib comparisons of immunological measures may lead to an inflated estimate of heritability and also reveal a limited role of nestling PHA-response for sexual selection in this population.
Place, publisher, year, edition, pages
2007. Vol. 3, no 4, 418-421 p.
heritability, animal model, immunity, evolutionary quantitative genetics, wild population
IdentifiersURN: urn:nbn:se:uu:diva-13326DOI: 10.1098/rsbl.2007.0135ISI: 000247907000019PubMedID: 17567550OAI: oai:DiVA.org:uu-13326DiVA: diva2:41096