1. Evolutionary Genetics Section, Department of Animal Biology, Institute of Biology, University of the Republic, 11400 Montevideo, Uruguay.
2. Laboratory of Bacteriology, National Institute of Agricultural Technology (INTA), Balcarce, Argentina.
3. Division of Veterinary Laboratories (DILAVE), Montevideo, Uruguay.
4. Practice Laboratories Unit, Faculty of Sciences, University of the Republic, 11400 Montevideo, Uruguay.