Abstract
In South America, apicomplexan parasites of the genus Hepatozoon have been sporadically detected in mammals. Previous studies in wild canids from Brazil and Argentina demonstrated infections by species genetically related to Hepatozoon americanum. The aim of the present work was to detect the presence of Hepatozoon in road-killed foxes encountered in Uruguayan highways. Blood samples from 45 crab-eating (Cerdocyon thous) and 32 grey pampean (Lycalopex gymnocercus) foxes were analyzed by PCR for Hepatozoon 18S rRNA gene. Eight foxes (10.4%) were found to be infected with an H. americanum-like protozoan, an Hepatozoon closely related to H. americanum. Bayesian and maximum-likelihood phylogenetic analyses revealed that the sequences obtained in this study cluster with H. americanum from the United States, and with an H. americanum-like species from dog and foxes from Brazil and Argentina. In the Unites States, H. americanum causes severe disease in dogs. In addition to this, an increasing habitat overlap between dogs and foxes makes the presence of H. americanum-like protozoan in foxes acquires veterinary relevance. This work represents the first report of L. gymnocercus infected with an H. americanum-like protozoan, and of wild canids infected with Hepatozoon in Uruguay.
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Luis A. Carvalho: conceptualization, data curation, methodology, formal analysis, investigation, writing — original draft, and writing — review and editing. María L. Félix: formal analysis, investigation, methodology, and writing — review and editing. Valentin Bazzano: methodology, and review and editing. Anthony da Costa: methodology. Sebastián Muñoz-Leal: conceptualization, formal analysis, methodology, writing — original draft, and writing — review and editing. María T. Armúa-Fernández: conceptualization, data curation, methodology, formal analysis, and investigation. José M. Venzal: conceptualization, data curation, methodology, resources, formal analysis, investigation, project administration, writing — original draft, and writing — review and editing. All authors read and approved the final manuscript.
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Carvalho, L., Félix, M.L., Bazzano, V. et al. An Hepatozoon americanum-like protozoan in crab-eating (Cerdocyon thous) and grey pampean (Lycalopex gymnocercus) foxes from Uruguay. Parasitol Res 120, 3587–3593 (2021). https://doi.org/10.1007/s00436-021-07305-6
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DOI: https://doi.org/10.1007/s00436-021-07305-6