1. Department of Biology, Universidade Federal do Piauí, Teresina, Piauí, Brazil
2. Universidade Federal do Sul da Bahia, Teixeira de Freitas, Bahia, Brazil
3. Molecular Biology & Biotechnology Laboratory, Embrapa Meio-Norte, Teresina, Piauí, Brazil
4. Universidade Federal do Piauí, Northeast Biotechnology Network RENORBIO, Teresina, Piauí, Brazil
5. Department of Biology, Dalhousie University, Halifax, NS, Canada
6. Molecular Biology Laboratory, Embrapa Caprinos e Ovinos, Sobral, Ceará, Brazil