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Article 7

Geographical patterns of the species richness of helminth parasites of moles ( Talpa spp.) in Spain: separating the effect of sampling effort from those of other conditioning factors

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A. RIBAS1*, A. M. BARBOSA2, J. C. CASANOVA1, R. REAL2, C. FELIU1, J. M. VARGAS 2
1Unitat de Parasitologia, Departament de Microbiologia i Parasitologia Sanitàries, Facultat de Farmàcia, Universitat de Barcelona Avda, Diagonal s/n, 08028 Barcelona, Spain
2Laboratorio de Biogeografía, Diversidad y Conservación, Departamento de Biología Animal, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain
*Corresponding author: e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

ABSTRACT. – We analysed the viscera of 534 moles (Talpa spp.) from 30 of the 47 provinces of peninsular Spain, including 255 individuals of T. europaea from eight provinces, 154 individuals of T. occidentalis from 20 provinces, and 125 unidentified Talpa individuals from two provinces. We identified their helminth parasites and determined parasite species richness. We related parasite species richness with sampling effort using both a linear and a logarithmic function. We then performed stepwise linear regressions to predict mole parasite species richness from a small set of selected predictor variables that included sampling effort. We applied the resulting models to forecast T. europaea, T. occidentalis, and Talpa spp. parasite species richness in all provinces with recorded host presence, assuming different levels of sampling effort . Finally, we used partial regression analysis to partition the variation explained by each of the selected variables in the models. We found that mole parasite species richness is strongly conditioned by sampling effort, but that other factors such as cropland area and environmental disturbance have significant independent effects.

You are here: Volume 57 (2007) Issue 1 / 2 Article 7
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