Abstract
Amphibian populations are declining around the world, and the main reasons are the environmental changes and pathogens. However, there are few studies addressing the interaction and impact of the different pathogens that affect amphibians, such as hemoparasites. These parasites had been described as common in some amphibian species, but unfortunately, their description and characterization are unclear and scarcely spread. The objective of the present study was to evaluate the morphological and molecular characterization of hemoparasites present in vaillant’s frogs. Seven frogs of Lithobates vaillanti were captured at the biological station La Florida in Tabasco, Mexico. Blood smears were performed, and results show that 100% of the animals have hemoparasites. Three types of hemoparasites were found. Eighty-five percent of the frogs were positive to Hepatozoon sp., 57% to Lankesterella sp., and 28% to Trypanosoma sp. According to the molecular analysis of the obtained sequences of Trypanosoma sp. and Hepatozoon sp., both protozoans were positioned in between the clusters of parasites of different geographical regions. Nevertheless, no species names were assigned to any of these parasites because more sequences and analysis are needed.
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This wok was supported by grant 434772 from the Consejo Nacional de Ciencia y Tecnología (CONACYT).
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All procedures performed in studies involving animals were in accordance with the ethical standards of the institution at which the studies were conducted. SICUAE (Subcomité Institucional para el Cuidado y Uso de Animales Experimentales), Posgrado en Ciencias de la Salud y la Producción Animal, Universidad Nacional Autónoma de México MC-2017/1-7.
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Isaak-Delgado, A.B., López-Díaz, O., Romero-Callejas, E. et al. Morphological and molecular characteristics of hemoparasites in vaillant’s frogs (Lithobates vaillanti). Parasitol Res 119, 1891–1901 (2020). https://doi.org/10.1007/s00436-020-06689-1
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DOI: https://doi.org/10.1007/s00436-020-06689-1