Reproduction in the bushmaster (Lachesis muta): uterine muscular coiling and female sperm storage

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dc.contributorLaboratório de Ecologia e Evoluçãopt_BR
dc.contributor.authorSouza, Eletra dept_BR
dc.contributor.authorAlmeida-Santos, Selma Mariapt_BR
dc.identifier.citationSouza E, Almeida-Santos SM. Reproduction in the bushmaster (Lachesis muta): uterine muscular coiling and female sperm storage. Acta Zool.. 2020 Dec;in press. doi:10.1111/azo.12369.pt_BR
dc.description.abstractProlonged sperm storage in the female reproductive tract is a widespread strategy among vertebrates. In reptiles, especially lizards and snakes, females have specialized structures to store sperm in their oviduct, which occur in the posterior infundibulum and the nonglandular uterus. Many viperids exhibit uterine muscular coiling (UMC) in the nonglandular uterus, and this modification has been proposed as an ancestral trait in this taxon to store sperm. However, UMC and oviductal sperm storage have not been reported in Lachesis. Here, we studied the reproductive tract of L. muta females using histological techniques and describe, for the first time, the occurrence of oviductal sperm storage and UMC in nonglandular uterus of this species. We also describe an increase in secretory activity in the oviduct throughout the reproductive cycle. Our results support the hypothesis that UMC is an ancestral character in Viperidae and suggest that female L. muta must store sperm in the oviduct to fertilize the oocytes. We also propose new hypotheses for reproductive strategies of L. muta in nature.pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.relation.ispartofActa Zoologicapt_BR
dc.titleReproduction in the bushmaster (Lachesis muta): uterine muscular coiling and female sperm storagept_BR
dc.contributor.externalUniversidade de São Paulo (USP)pt_BR
dc.contributor.externalUniversidade Estadual Paulista Júlio de Mesquita Filho (UNESP)pt_BR
dc.subject.keywordreproductive biologypt_BR
dc.subject.keyworduterine coilingpt_BR
dc.relation.ispartofabbreviatedActa Zool.pt_BR
dc.identifier.citationabntin press, dez. 2020pt_BR
dc.identifier.citationvancouver2020 Dec;in presspt_BR
dc.contributor.butantanSouza, Eletra de|:Aluno|:Laboratório de Ecologia e Evolução|:PrimeiroAutor|:Autor de correspondênciapt_BR
dc.contributor.butantanAlmeida-Santos, Selma Maria|:Pesquisador|:Laboratório de Ecologia e Evoluçãopt_BR
dc.sponsorship.butantanCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)¦¦pt_BR
dc.sponsorship.butantanConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)¦¦310357/2018‐7pt_BR
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