Herpetological Conservation and Biology 15(3):620–625. Submitted: 22 May 2020; Accepted: 12 November 2020; Published: 16 December 2020. SEMEN COLLECTION AND EVALUATION IN MICRURUS CORALLINUS RAFAELA ZANI COETI1,2,4, KALENA BARROS DA SILVA3, GIUSEPPE PUORTO3, SILVIA REGINA TAVAGLIA-CARDOSO3, AND SELMA MARIA DE ALMEIDA-SANTOS1,2 1Laboratório de Ecologia e Evolução, Instituto Butantan, 1500 Avenida Vital Brasil, São Paulo 05503–900, Brazil 2Programa de Pós Graduação em Anatomia dos Animais Domésticos e Silvestres, Universidade de São Paulo, 87 Avenida Professor Doutor Orlando Marques de Paiva, São Paulo 05508–270, Brazil 3Museu Biológico, Instituto Butantan, 1500 Avenida Vital Brasil, São Paulo 05503–900, Brazil 4Corresponding author, e-mail:
[email protected] Abstract.—The Painted Coral Snake Micrurus corallinus is one of the Brazilian species kept in captivity to obtain venom for antivenom production. Difficulties in establishing a sizeable breeding colony make it necessary to find alternatives that increase the reproductive efficiency of captive individuals. Here, we tested a semen collection protocol and characterize the seminal parameters of captive M. corallinus. We collected semen during the mating season of the species (spring-summer) and were successful at every first attempt. Spermatozoa of M. corallinus are elongated and filiform, and the midpiece is the longest part. Sperm motility and progressive motility reached values of 80% and 3.6%, respectively, during the reproductive period of this species. Our results will allow further studies to improve husbandry, reproductive rates, and conservation of captive M. corallinus. Key Words.—reproduction; reproductive biotechniques; reptiles; sperm parameters INTRODUCTION and capture rates of individual M. corallinus in the wild (Roze 1996) are worrisome and also make it difficult to Reproductive biotechniques have been useful in establish a breeding colony with a substantial number implementing conservation projects for endangered of animals.