Authors: L Amo P López J Martín
Publish Date: 2004/09/11
Volume: 94, Issue: 4, Pages: 290-293
Abstract
The study of the effect of parasites on their host populations is essential for understanding their role in host population dynamics and ecology We describe the general field population biology of haemogregarines in the Iberian rock lizard Lacerta monticola examining the factors that determine the prevalence and intensity of infection Prevalence and infection intensity were higher in adults than in juvenile lizards The prevalence rate was higher in larger lizards probably because they were also older and had been more often in contact with parasites during their lifetime During the mating season the intensity of parasite infection was greater in males than in females probably due to immunosuppressive effects of testosterone The parasite load had a negative effect on the body condition during the reproductive season The results suggest that the interactions between parasites and hosts are not stable in this lizard populationWe thank two anonymous reviewers for helpful comments and ‘El Ventorrillo’ MNCN Field Station for use of their facilities Financial support was provided by the MCYT projects BOS 200200598 and BOS 200200547 and to L Amo by an ‘El Ventorrillo’ CSIC grant This study was performed under license of the ‘Consejería de Medio Ambiente de la Comunidad de Madrid’ The experiments comply with the current laws of Spain where the experiments were performed
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