Alfonso Gutierrez Adan has been a senior researcher at the Animal Reproduction Department of INIA since 1997. He obtained his PhD in Biological Sciences at Oviedo University in 1993. As a post doc, He spent three years at the Department of Animal Science, Davis University of California (USA). His current research interests focus on understanding the mechanisms that control gametogenesis and early embryonic development and that can modulate the well-being, health, fertility, and productive characteristics of the adult animal. He is member of the Spanish Association of Animal Reproduction (AERA), the European Embryo Transfer Society (AETE), the Society of the Study of Reproduction (SSR), the International Embryo Transfer Society (IETS), and a member of Free Asociate EuroScience.