1. Institute of Biosciences, Graduate Program in Animal Biology; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
2. Faculty of Agronomic Sciences, Department of Environmental Resources; University of Tarapacá; Arica Chile
3. Institute of Biosciences, Department of Genetics; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil
4. Faculty of Agronomic Sciences, Department of Agricultural Production; University of Tarapacá; Arica Chile
5. Institute of Biosciences, Department of Zoology; Federal University of Rio Grande do Sul; Porto Alegre RS Brazil