A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Ectoparasites help to maintain variation in cell-mediated immunity in the blue tit-hen flea system
Tekijät: Pitala N, Siitari H, Gustafsson L, Brommer JE
Kustantaja: EVOLUTIONARY ECOLOGY LTD
Julkaisuvuosi: 2009
Lehti:Evolutionary Ecology Research
Tietokannassa oleva lehden nimiEVOLUTIONARY ECOLOGY RESEARCH
Lehden akronyymi: EVOL ECOL RES
Vuosikerta: 11
Numero: 1
Aloitussivu: 79
Lopetussivu: 94
Sivujen määrä: 16
ISSN: 1522-0613
Tiivistelmä
Results: Hen flea infestation lowered growth, cell-mediated immunocompetence, and haematocrit. Genotype-environment interactions were observed in cell-mediated immunocompetence, body mass, and haematocrit, with significant crossing reaction norms for cell-mediated immunocompetence and haematocrit. Immunoglobulin concentrations were unaffected by fleas. Thus, host-parasite interactions constrain the expression and evolvability of some traits, but also create genotype-environment interactions with the potential to maintain genetic variation in immune defence.
Results: Hen flea infestation lowered growth, cell-mediated immunocompetence, and haematocrit. Genotype-environment interactions were observed in cell-mediated immunocompetence, body mass, and haematocrit, with significant crossing reaction norms for cell-mediated immunocompetence and haematocrit. Immunoglobulin concentrations were unaffected by fleas. Thus, host-parasite interactions constrain the expression and evolvability of some traits, but also create genotype-environment interactions with the potential to maintain genetic variation in immune defence.
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