Full professor at UAA, Co-Chair of the IUCN’s Viper Specialist Group (VSG) and Member (Candidate) of the National System of Researchers in Mexico. Interested in macroecological patterns, natural history and conservation of viperid snakes. He enjoys field work and has done it looking for vipers in every state of Mexico and several in USA. He values teaching and divulgative work: has taught 36 different courses and given more than a hundred professional presentations. Jesus was President of the Mexican Zoological Society and has done academic stays at USA and Ecuador.

Marcio Martins is a Professor at the University of São Paulo, Brazil. He is the South American Regional Coordinator of the Viper Specialist Group. His current research focuses on the ecology, evolution and conservation of amphibians and Squamate reptiles. He's been involved with extinction risk assessments at global, national, and regional levels during the last 20 years, using IUCN Red List Categories and Criteria, contributing to the IUCN Red List in the assessment of Brazilian snakes, coordinating the assessments of Brazilian reptiles from 1999 to 2003, contributing to the sampled red list of reptiles coordinated by the IoZ-ZSL in 2011, coordinating the 1st and 2nd cycles of full assessments of Brazilian snakes from 2010 to 2014 and 2016 to 2020, working as a RLA validating assessments of the 1st and 2nd cycles of full assessments of all Brazilian animals from 2012 to 2013 and 2018 to 2021.

Date of Birth: August 28, 1962 Education: Ph.D. in Biology, Faculty of Biology, University of Belgrade, 1997 M.Sc. in Biology, Department of Biology, Faculty of Natural Sciences and Mathematics, University of Belgrade, 1988 B.Sc. in Biology, Faculty of Natural Sciences and Mathematics, University of Belgrade, 1986 Languages: English, Russian, Spanish, Bosnian, Croatian, Montenegrian Areas of expertise: Herpetology Conservation biology, evolutionary ecology and biodiversity conservation Environmental Impact Assessment Present position: Professor, Department of biology and ecology, Faculty of Sciences and Mathematics, University of Niš, Serbia, 2012-present Topics: Evolutionary biology, Conservation bology Principal Research Fellow, Department of Evolutionary biology, IBISS, University of Belgrade, 2011-present Years of Professional Experience: 29 years Activities in IUCN: 2008-Europe & Caucasus Red List Assessment Workshop, Antalya, Turkey; 2005- European Red List Assessment Workshop, Bonn, Germany; 2004- Mediterranean Red List Assessment Workshop, Malaga, Spain Coordinator of European branch of IUCN Viper Specialist Group, 2012-present Tier I IUCN Amphibian Red List Authority Working Group for Europe, 2013-2016 Member of Amphibian Species Specialist Group of IUCN, 2008-present Member of Viper Specialist Group of IUCN, 2010-present Member of IUCN Amphibian Red List Assessors team, 2009-present Membership in Scientific Societies: Societas Europaea Herpetologica (SEH) Society for Study of Amphibians and Reptiles (SSAR) Society for Conservation Biology (SCB)