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RESEARCH PRODUCT
Fluctuating asymmetry and immune function in a field cricket
Jari J. AhtiainenJukka SuhonenMarkus J. Rantalasubject
education.field_of_studybiologyEcologyGryllus bimaculatusPopulationZoologybiology.organism_classificationFluctuating asymmetryField cricketLower bodyImmune systemLytic cycleImmunocompetenceeducationEcology Evolution Behavior and Systematicsdescription
Recently, fluctuating asymmetry (FA) of morphological traits has attracted great attention as a short-cut measure of individual quality. Whereas there is some evidence that FA of sexual ornaments is negatively associated with immune function, studies concerning FA and immune function in non-ornamental traits are absent. Here, we tested whether FA of three non-ornamental traits in hind limbs is related to male immune function in a population of the Mediterranean field cricket, Gryllus bimaculatus. As different measures of male immune function, we used encapsulation rate and lytic activity. We found that a composite measure of FA (cFA) was negatively related to encapsulation rate. However, lytic activity was not related to cFA, but there was a tendency that males with higher body mass had higher lytic activity than males with lower body mass. Our results suggest that FA in non-ornamental traits indicates male immunocompetence in G. bimaculatus.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-12-01 | Oikos |