1. Department of Biology, Faculty of Philosophy, Sciences and Languages of Ribeirao Preto, University of Sao Paulo (USP), 14040 901 Ribeirao Preto, SP, Brazil
2. Department of Animal Biology, Institute of Biology, University of Campinas (UNICAMP), 13083-862 Campinas, SP, Brazil
3. Department of Medical Genetics, School of Medical Sciences, University of Campinas (UNICAMP), 13083-887 Campinas, SP, Brazil