Survey and first molecular characterization of Echinococcus granulosus sensu stricto (G1) in Pampas fox (Lycalopex gymnocercus) in Buenos Aires province, Argentina

NATHALIA PAULA SCIOSCIA; ROMINA SANDRA PETRIGH; PABLO MARTIN BELDOMENICO; MARTIN FUGASSA; GUILLERMO DENEGRI

ACTA TROPICA

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016

0001-706X

Echinococcosis is a zoonosis caused by tapeworms of the genus Echinococcus. Echinococcus granulosussensu lato (s. l.) has a world-wide distribution and its transmission is primarily maintained in a synanthropiccycle with dogs as definitive hosts and livestock species as intermediate hosts. However, many wild canids also function as definitive hosts for E. granulosus s. l. Echinococcosis in humans is mainly caused by E. granulosus sensu stricto (s. s.) G1 genotype. In the present work, we expanded the epidemiologicalstudy on echinococcosis reported cases in Pampas fox (Lycalopex gymnocercus) to provide a prevalence estimate for rural areas of southern Buenos Aires province, Argentina. Ninety-five whole intestines were analyzed using the sedimentation and counting technique with a result of 83 foxes (87.37%) harboring at least one helminth species. E. granulosus s. l. adults were found in one Pampas fox (1.05%). These adult helminthes were E. granulosus s. s. (G1) according to the genotyping analysis ofa 450-bp region of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene.