Master's thesis research: In vitro culture of guayabo by somatic embryogenesis in the year 2000-2003   I have held the post of Director of Career and Technical Director of Biotechnology Laboratories of the Technological University of the Usumacinta, Tabasco, Mexico in 2003-2005   Head of the Department of Continuing Education and Technology Services Technological University of Usumacinta during 2005-2007   Full time professor at the Technological University of Usumacinta 2004-2010   Director of the research project "Separation of strains of Metarhzium anisopliae"  funds of Foundation Produce, Tabasco, 2006-2007   Director of scientific research project "Study of genetic biodiversity of entomopathogenic fungi in Tabasco" mixed funds with CONACYT 2007-2009   Director of the research project "Biological control of tick with Metarhizium anisopliae " of 2014-2015 funds Tabasco Foundation Produce   technical manager of the research project "Biological control with entomopathogenic fungi black oil palm weevil" with funding from the SEP 2015-2016

Full professor of the Institute of Indigenous Studies, UNACH   Full professor of the Faculty of Veterinary Medicine, UNACH   Head of Project Development of the Ministry of Economic Development, Government of Chiapas   Director of the National Center for Promotion Ovine, Teopisca, Chiapas, SAG (now SAGARPA)   Assistant Professor, Faculty of Veterinary Medicine, UNAM