Reproductive cycle and sperm storage of female coral snakes, Micrurus corallinus and Micrurus frontalis

dc.contributor.authorBassi, Erick Augusto [UNESP]
dc.contributor.authorCoeti, Rafaela Zani
dc.contributor.authorAlmeida-Santos, Selma Maria De [UNESP]
dc.contributor.institutionInstituto Butantan
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de Saõ Paulo
dc.date.accessioned2020-12-12T01:56:34Z
dc.date.available2020-12-12T01:56:34Z
dc.date.issued2020-01-01
dc.description.abstractWe analyzed the hypothesis that the lack of synchronization between the mating and ovulation period of Micrurus frontalis (BRT clade) is indicative of the capacity of females to store sperm. Conversely, since these reproductive events occur in the same season for Micrurus corallinus (BRM clade), sperm storage is not expected. Thus, we analyzed the reproductive cycle of female M. corallinus and M. frontalis, and investigated the occurrence of sperm storage. Our results showed that these two species of coral snakes (clades BRM and BRT) possess different reproductive cycles. Micrurus frontalis exhibits an extensive reproductive period encompassing three seasons (summer, autumn and winter), while M. corallinus directs secondary vitellogenesis and ovulation to the hottest period of the year (spring and summer). We confirm, for the first time, the strategy of sperm storage (SSr) in females of the genus Micrurus. We observed sperm storage receptacles located in the non-glandular uterus in all seasons of the year for M. corallinus and in spring, summer and autumn in M. frontalis. Furthermore, the presence of SSr in females in the non-reproductive (post-ovulatory) period, the verification of myoid cells around the receptacles and secretion of neutral carbohydrates in the lumina of SSrs may indicates a long-term storage. The posterior infundibulum is another possible region of sperm storage by the presence of tubular ciliated gland; however, reproductive studies with other species of the genus are necessary for a better understanding of the reproductive strategies of the BRT and BRM clades.en
dc.description.affiliationLaboratório de Ecologia e Evolucąõ Instituto Butantan, Avenida Vital Brasil, 1500
dc.description.affiliationDepartamento de Biologia Instituto de BiociÃncias Campus Saõ José Do Rio Preto Universidade Estadual Paulista (UNESP) Letras e CiÃncias Exatas (IBILCE), 2265, Rua CristÃvão Colombo
dc.description.affiliationDepartamento de Cirurgia Faculdade de Medicina Veterinária e Zootecnia Universidade de Saõ Paulo, Av. Orlando Marques de Paiva, Cidade UniversitÃiria
dc.description.affiliationUnespDepartamento de Biologia Instituto de BiociÃncias Campus Saõ José Do Rio Preto Universidade Estadual Paulista (UNESP) Letras e CiÃncias Exatas (IBILCE), 2265, Rua CristÃvão Colombo
dc.format.extent13-27
dc.identifierhttp://dx.doi.org/10.1163/15685381-20191189
dc.identifier.citationAmphibia Reptilia, v. 41, n. 1, p. 13-27, 2020.
dc.identifier.doi10.1163/15685381-20191189
dc.identifier.issn1568-5381
dc.identifier.issn0173-5373
dc.identifier.scopus2-s2.0-85079273514
dc.identifier.urihttp://hdl.handle.net/11449/200060
dc.language.isoeng
dc.relation.ispartofAmphibia Reptilia
dc.sourceScopus
dc.subjectElapidae
dc.subjectlong-term storage
dc.subjectMicrurus
dc.subjectreproduction
dc.titleReproductive cycle and sperm storage of female coral snakes, Micrurus corallinus and Micrurus frontalisen
dc.typeArtigo

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