1. Tropical Aquaculture Laboratory, Biological Sciences Division, Juarez Autonomous University of Tabasco, Tabasco, C. P. México
2. Unidad Multidisciplinaria De Docencia E Investigación, Facultad De Ciencias, National Autonomous University of Mexico, Sisal, Yucatán Mexico
3. Animal Reproduction Biology Laboratory. Comparative Biology Department, Faculty of Sciences, National Autonomous University of Mexico, Mexico City, México