Abstract
Wildlife species are involved in the transmission of diverse pathogens. This study aimed to monitor raccoons (Procyon lotor), American minks (Neovison vison), and red foxes (Vulpes vulpes) as potential reservoirs in central Spain. Specifically, 200 spleen and fecal samples (from 194 raccoons, 3 minks, and 3 foxes) were analyzed molecularly by PCR/qPCR and sequencing for the presence of piroplasmids, Hepatozoon spp., Toxoplasma gondii, and Ehrlichia canis infections in the Community of Madrid (Spain). Biological samples were obtained in the years 2014, 2015, and 2016. No pathogen DNA was found in fecal samples. In contrast, analysis of raccoon spleen samples revealed that Toxoplasma was the most prevalent pathogen (prevalence 3.6 ± 2.6%), followed by Hepatozoon canis and E. canis (each with a prevalence of 2.57 ± 2.2%). Hepatozoon canis was also diagnosed in all three of the analyzed foxes. Analysis of yearly prevalence showed that tick-borne pathogens were less frequent in raccoon in 2015, a dry and warm year compared both to 2014 and 2016. These data suggest that fecal PCR assays are unsuitable for detection of DNA of non-erythrocytic pathogens. Furthermore, they demonstrate that the raccoon (an invasive species often living in proximity to domestic areas) and the red fox are putative reservoirs for pathogenic organisms in the Community of Madrid.
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Acknowledgments
We are grateful to Mr. José Lara and Mrs. Elisa Cacharro (Consejería de Medio Ambiente, Área de Conservación de Flora y Fauna, Comunidad de Madrid) and the veterinarian team of the Centro de Recuperación de Animales Silvestres de la Comunidad de Madrid (Tres Cantos, Madrid) for supplying wildlife biological samples.
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This work received financial support from funds of the Universidad de Alcalá project CCGP2017-BIO/014.
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Criado-Fornelio, A., Martín-Pérez, T., Verdú-Expósito, C. et al. Molecular epidemiology of parasitic protozoa and Ehrlichia canis in wildlife in Madrid (central Spain). Parasitol Res 117, 2291–2298 (2018). https://doi.org/10.1007/s00436-018-5919-2
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DOI: https://doi.org/10.1007/s00436-018-5919-2