Ultrastructure of spermatogenesis, spermatozoon and processes of testicular regression and recrudescence in Eptesicus furinalis (Chiroptera: Vespertilionidae)

Página do item simplificado
dc.contributor.authorBueno, Larissa M. [UNESP]
dc.contributor.authorBeguelini, Mateus R. [UNESP]
dc.contributor.authorComelis, Manuela T. [UNESP]
dc.contributor.authorTaboga, Sebastiao R. [UNESP]
dc.contributor.authorMorielle-Versute, Eliana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:53:16Z
dc.date.available2015-03-18T15:53:16Z
dc.date.issued2014-08-01
dc.description.abstractStudies have shown that the annual reproductive cycle of Eptesicus furinalis includes at least one period of total testicular regression. Thus, this study aimed to evaluate their reproductive cycle ultrastructurally. The annual reproductive cycle was divided into four periods: active, regressing, regressed and recrudescence. The active period was similar to that of other bats, including the completion of spermatogenesis with three main types of spermatogonia (A(d), A(p) and B) and 12 steps in the process of spermatid differentiation. However, its spermatozoa differed in that outer dense fibers 1, 5, 6 and 9 are larger than the others and due to the presence of what is likely a probably genera-specific bulging in the anterior portion. In the regressing period, Sertoli cell nuclei migrate to the basal compartment with the nuclei close to the basal lamina. The basal compartment had a more compact appearance than the adluminal compartment, with relaxed cellular connections. In the regressed period, spermatogenesis ceased; the seminiferous epithelium was composed only of Sertoli cells and three types of spermatogonia: types A(d), 1 and 2. In the recrudescence period, spermatogenesis restarted, with the process of reactivation divided into three phases: early, medial and late recrudescence. In conclusion, our study described the process of spermatogenesis and the ultrastructure of the spermatozoa and confirmed the presence of a process of total testicular regression in the annual cycle of E. furinalis. We characterize distinct morphologic variations in the ultrastructure of the testicular cells during the four different periods of the annual reproductive cycle. (C) 2014 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Bot & Zool, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Biol, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Bot & Zool, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Biol, BR-15054000 Sao Jose Do Rio Preto, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 09/16181-9
dc.description.sponsorshipIdFAPESP: 09/03470-2
dc.description.sponsorshipIdFAPESP: 12/09194-0
dc.description.sponsorshipIdCNPq: 300163/2008-8
dc.description.sponsorshipIdCNPq: 301596/2011-5
dc.description.sponsorshipIdCNPq: 302008/2010-1
dc.format.extent228-244
dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2014.05.018
dc.identifier.citationAnimal Reproduction Science. Amsterdam: Elsevier Science Bv, v. 148, n. 3-4, p. 228-244, 2014.
dc.identifier.doi10.1016/j.anireprosci.2014.05.018
dc.identifier.issn0378-4320
dc.identifier.orcid0000-0002-0970-4288
dc.identifier.urihttp://hdl.handle.net/11449/116407
dc.identifier.wosWOS:000340221700018
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofAnimal Reproduction Science
dc.relation.ispartofjcr1.647
dc.relation.ispartofsjr0,704
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEptesicus furinalisen
dc.subjectSpermatogenesisen
dc.subjectSpermiogenesisen
dc.subjectTesticular regressionen
dc.titleUltrastructure of spermatogenesis, spermatozoon and processes of testicular regression and recrudescence in Eptesicus furinalis (Chiroptera: Vespertilionidae)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-0970-4288[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

Arquivos

Coleções

Artigos - Zoologia e Botânica - IBILCE
Artigos - Biologia - IBILCE