Testicular structure and spermatogenesis of Amazonian freshwater cururu stingray Potamotrygon cf. histrix

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dc.contributor.authorZaiden, Sergio Fonseca
dc.contributor.authorBrinn, Richard Phillip
dc.contributor.authorMarcon, Jaydione Luiz
dc.contributor.authorUrbinati, Elisabeth Criscuolo [UNESP]
dc.contributor.institutionUniversidade de Rio Verde (FESURV)
dc.contributor.institutionFlorida International University‎
dc.contributor.institutionUniversidade Federal do Amazonas (UFAM)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:15:47Z
dc.date.available2014-05-20T13:15:47Z
dc.date.issued2011-08-01
dc.description.abstractThe cururu stingray Potamotrygon cf. histrix, a new and endemic Amazonian freshwater species, presents appropriate characteristics for fish keeping and is exploited from its natural environment. The present study identified the testicular structure and spermatogenesis of this species. Gonads from adult male specimens were dissected, fixed and processed for histological analysis. The testes were of testicular/epigonial type. The presence of germinal papillae was observed in the upper portion of organ with primordial germ cells and Sertoli cell precursors. The testis was lobular with zonal organization and cystic gametogenesis, with the occurrence of spermatoblasts. The Sertoli cells underwent morphological modifications over the course of gamete formation. The spermatozoids had long heads and were spiraled on their own axis. Information on the reproductive biology will serve as basis for studies on the reproduction and phylogeny of this peculiar group of cartilaginous fish.en
dc.description.affiliationUniv Rio Verde FESURV, Dept Biol, BR-75901970 Rio Verde, Go, Brazil
dc.description.affiliationFlorida Int Univ, Dept Biol, Miami, FL 33199 USA
dc.description.affiliationFed Univ Amazonas UFAM, Dept Physiol Sci, Manaus, Amazonas, Brazil
dc.description.affiliationSão Paulo State Univ UNESP, Dept Anim Morphol & Physiol, Fac Agr & Vet Sci, Aquaculture Ctr, São Paulo, Brazil
dc.description.affiliationUnespSão Paulo State Univ UNESP, Dept Anim Morphol & Physiol, Fac Agr & Vet Sci, Aquaculture Ctr, São Paulo, Brazil
dc.description.sponsorshipNational Geographic Conservation Fund
dc.description.sponsorshipIdNational Geographic Conservation Fund: C47-04
dc.format.extent245-253
dc.identifierhttp://dx.doi.org/10.1017/S0967199410000298
dc.identifier.citationZygote. New York: Cambridge Univ Press, v. 19, n. 3, p. 245-253, 2011.
dc.identifier.doi10.1017/S0967199410000298
dc.identifier.fileWOS000292281400007.pdf
dc.identifier.issn0967-1994
dc.identifier.urihttp://hdl.handle.net/11449/2822
dc.identifier.wosWOS:000292281400007
dc.language.isoeng
dc.publisherCambridge University Press
dc.relation.ispartofZygote
dc.relation.ispartofjcr1.114
dc.relation.ispartofsjr0,387
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectEpigonial testesen
dc.subjectGerminal papillaen
dc.subjectIntratesticular ducten
dc.subjectSertoli cellen
dc.subjectSpermatoblasten
dc.titleTesticular structure and spermatogenesis of Amazonian freshwater cururu stingray Potamotrygon cf. histrixen
dc.typeArtigo
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676#
dcterms.rightsHolderCambridge Univ Press

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Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp