Two periods of total testicular regression are peculiar events of the annual reproductive cycle of the black Myotis bat, Myotis nigricans (Chiroptera: Vespertilionidae)

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dc.contributor.authorBeguelini, Mateus R. [UNESP]
dc.contributor.authorGoes, Rejane M. [UNESP]
dc.contributor.authorTaboga, Sebastiao R. [UNESP]
dc.contributor.authorMorielle-Versute, Eliana [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:54:32Z
dc.date.available2015-03-18T15:54:32Z
dc.date.issued2014-01-01
dc.description.abstractMyotis nigricans presents few and controversial reproductive data, which indicate geographical variation in reproduction. Thus, this study aimed to evaluate the seasonal modifications in testicular and epididymal morphologies in a tropical environment, submitting these organs to morphometric and immunohistochemical analysis. The observations revealed that this species presents two peaks of spermatogenic activity followed by two periods of total testicular regression (a quiescent pre-pubertal-like morphology, where only Sertoli cells and spermatogonia could be observed), in the same annual reproductive cycle, which seem to be only indirectly influenced by abiotic factors. This testicular behaviour seems to be synchronised with the caput and corpus epididymidis, but not with the cauda epididymidis, which presents aspects of sperm storage in May-June. The control of this variation seems to be directly linked to the expression of the androgen receptor, since, throughout the year, it is high in periods of testicular recrudescence and low in periods of deactivation. It is not thought to be directly linked to apoptosis, which is more pronounced in periods of recrudescence than in periods of regression.en
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Biol, BR-15054000 Sao Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Bot & Zool, BR-15054000 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Biol, BR-15054000 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Bot & Zool, BR-15054000 Sao Paulo, 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.sponsorshipIdCNPq: 300163/2008-8
dc.description.sponsorshipIdCNPq: 301596/2011-5
dc.description.sponsorshipIdCNPq: 302008/2010-1
dc.format.extent834-846
dc.identifierhttp://dx.doi.org/10.1071/RD13109
dc.identifier.citationReproduction Fertility And Development. Collingwood: Csiro Publishing, v. 26, n. 6, p. 834-846, 2014.
dc.identifier.doi10.1071/RD13109
dc.identifier.issn1031-3613
dc.identifier.lattes0947193347312157
dc.identifier.orcid0000-0002-0970-4288
dc.identifier.orcid0000-0002-3622-460X
dc.identifier.urihttp://hdl.handle.net/11449/116923
dc.identifier.wosWOS:000340282800008
dc.language.isoeng
dc.publisherCsiro Publishing
dc.relation.ispartofReproduction Fertility And Development
dc.relation.ispartofjcr2.105
dc.relation.ispartofsjr0,681
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectrecrudescenceen
dc.subjectreproductionen
dc.subjectseasonalityen
dc.subjecttestesen
dc.titleTwo periods of total testicular regression are peculiar events of the annual reproductive cycle of the black Myotis bat, Myotis nigricans (Chiroptera: Vespertilionidae)en
dc.typeArtigo
dcterms.rightsHolderCsiro Publishing
unesp.author.lattes0947193347312157[2]
unesp.author.orcid0000-0002-0970-4288[3]
unesp.author.orcid0000-0002-3622-460X[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências Letras e Ciências Exatas, São José do Rio Pretopt

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