Genetic Variation of Echinococcus canadensis (G7) in Mexico

Ulises Rodriguez-Prado Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Diego Emiliano Jimenez-Gonzalez Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Guillermina Avila Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Armando E. Gonzalez Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Williams Arony Martinez-Flores Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Carmen Mondragon de la Peña Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Rigoberto Hernandez-Castro Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Mirza Romero-Valdovinos Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Ana Flisser Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Fernando Martinez-Hernandez Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Pablo Maravilla Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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Jose Juan Martinez-Maya Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, México; Instituto Tecnológico de Milpa Alta, DF, Mexico; Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, DF, Mexico; Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru; Hospital General “Dr. Manuel Gea Gonzalez,” DF, Mexico; Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, Zacatecas, Mexico

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We evaluated the genetic variation of Echinococcus G7 strain in larval and adult stages using a fragment of the mitochondrial cox1 gen. Viscera of pigs, bovines, and sheep and fecal samples of dogs were inspected for cystic and canine echinococcosis, respectively; only pigs had hydatid cysts. Bayesian inferences grouped the sequences in an E. canadensis G7 cluster, suggesting that, in Mexico, this strain might be mainly present. Additionally, the population genetic and network analysis showed that E. canadensis in Mexico is very diverse and has probably been introduced several times from different sources. Finally, a scarce genetic differentiation between G6 (camel strain) and G7 (pig strain) populations was identified.

Author Notes

* Address correspondence to Pablo Maravilla, Hospital General “Dr. Manuel Gea Gonzalez,” Departamento de Ecologia de Agentes Patogenos, Mexico, DF, 14080 Mexico. E-mail: maravillap@yahoo.com

Authors' addresses: Ulises Rodriguez-Prado and Jose Juan Martinez-Maya, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autonoma de Mexico, DF, Mexico, E-mails: amodelmerol123@yahoo.com and jjmm@unam.mx. Diego Emiliano Jimenez-Gonzalez, Instituto Tecnológico de Milpa Alta, Direccion General de Educacion Superior Tecnologica (DGEST), Mexico, DF, Mexico, E-mail: diego_emiliano_j@hotmail.com. Guillermina Avila and Ana Flisser, Facultad de Medicina, Departamento de Microbiologia y Parasitologia, Universidad Nacional Autonoma de Mexico, Mexico, DF, Mexico, E-mails: guilleavila2000@yahoo.com and flisser@unam.mx. Armando E. Gonzalez, Escuela de Medicina Veterinaria, Universidad Mayor de San Marcos, Lima, Peru, E-mail: agonzale@jhsph.edu. Williams Arony Martinez-Flores, Rigoberto Hernandez-Castro, Mirza Romero-Valdovinos, Fernando Martinez-Hernandez, and Pablo Maravilla, Hospital General “Dr. Manuel Gea Gonzalez,” Departamento de Ecologia de Agentes Patogenos, Mexico, DF, Mexico, E-mails: arony@live.com.mx, rigo37@gmail.com, mirzagrv@yahoo.com, fherxyz@yahoo.com, and maravillap@yahoo.com. Carmen Mondragon de la Peña, Centro de Biologia Experimental, Universidad Autonoma de Zacatecas, DF, Mexico, E-mail: hidatidosiszac@hotmail.com.

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