Author Affiliations +
Sergio R. Sanchez-Peña,1,* Celso Morales-Reyes,1 Fredy Herrera-Aguayo,1 Ivonne Torres-Acosta,1 Diego Camacho-Ponce,1 Esmeralda Gonzalez-Gallegos,1 Christopher Ritzi,2 Joe Sirotnak,3 Mark Briggs4
1aDepartamento de Parasitología, Universidad Autónoma Agraria Antonio Narro, Saltillo, Coahuila 25315
2bBiology, Geology, & Physical Sciences, Sul Ross State University, Alpine, Texas 79832, U.S.A., e-ma
3cU.S. National Park Service, Big Bend National Park, Texas 79834, U.S.A., e-mail: joe_sirotnak@nps.
4dChihuahuan Desert Program and Fresh Water Program, World Wildlife Fund, Washington, D. C. 20037, U.
*e-mail: sergior.sanchez@uaaan.mx(corresponding author),