Professor David Alberto Martínez Espinosa was born in Monterrey, Nuevo León, Mexico in June 1956. He studied Biochemical Engineering at the Technological Institute and Superior Studies of Monterrey. He was a professor of the career of agronomic engineering at the Universidad Autónoma Metropolitana Xochimilco Campus in the area of ​​agroindustries, where he collaborated in the design of the "Conservation and industrialization of agricultural products" program in the first design of the cited career. He is a professor and researcher of the Department of Man and his environment. He is a teacher in Ecological Systems Analysis; Planning and Analysis of Environmental Systems; Pests and diseases of a natural resource, and communities analysis. He has participated in the commission of two redesigns of the biology career, including in the modification of the programs of the two modules first mentioned.

He currently participates in the groups in charge of redesigning the modules of Analysis of ecological systems and communities analysis. He is a participant in the Departmental Research project entitled Vocational training in Sustainability of Students of Biology through active learning, through which he has collaborated in the elaboration of four books and various articles as part of the search strategies and tactics for improvement of the training of the students in the Biology career.

He is responsible for the research project Strategies for the capitalization of small aquaculture units in Morelos and the Aquaculture Systems Laboratory, where research is developed in genetics, reproduction, nutrition, aging, and diseases in ornamental aquaculture. As the last research project mentioned, a network of extension processes that include research, training, information dissemination, and techniques has been linked to improving the activity.

In this regard, he has coordinated or collaborated with the realization of various health, organizational and productive diagnoses to farms and / or multiple associations of producers. He led the completion of the state master plan to develop ornamental Morelos aquaculture that was used as a work tool for state aquaculture. He has been the chief of the research area and ecological processes of tropical aquatic resources on two occasions. He was a founding member of this area of ​​departmental research and collaborator in the authorship of its foundational documents.