Testicular structure and spermatogenesis of Amazonian freshwater cururu stingray Potamotrygon cf. histrix
dc.contributor.author | Zaiden, Sergio Fonseca | |
dc.contributor.author | Brinn, Richard Phillip | |
dc.contributor.author | Marcon, Jaydione Luiz | |
dc.contributor.author | Urbinati, Elisabeth Criscuolo [UNESP] | |
dc.contributor.institution | Universidade de Rio Verde (FESURV) | |
dc.contributor.institution | Florida International University | |
dc.contributor.institution | Universidade Federal do Amazonas (UFAM) | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.date.accessioned | 2014-05-20T13:15:47Z | |
dc.date.available | 2014-05-20T13:15:47Z | |
dc.date.issued | 2011-08-01 | |
dc.description.abstract | The 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.affiliation | Univ Rio Verde FESURV, Dept Biol, BR-75901970 Rio Verde, Go, Brazil | |
dc.description.affiliation | Florida Int Univ, Dept Biol, Miami, FL 33199 USA | |
dc.description.affiliation | Fed Univ Amazonas UFAM, Dept Physiol Sci, Manaus, Amazonas, Brazil | |
dc.description.affiliation | São Paulo State Univ UNESP, Dept Anim Morphol & Physiol, Fac Agr & Vet Sci, Aquaculture Ctr, São Paulo, Brazil | |
dc.description.affiliationUnesp | São Paulo State Univ UNESP, Dept Anim Morphol & Physiol, Fac Agr & Vet Sci, Aquaculture Ctr, São Paulo, Brazil | |
dc.description.sponsorship | National Geographic Conservation Fund | |
dc.description.sponsorshipId | National Geographic Conservation Fund: C47-04 | |
dc.format.extent | 245-253 | |
dc.identifier | http://dx.doi.org/10.1017/S0967199410000298 | |
dc.identifier.citation | Zygote. New York: Cambridge Univ Press, v. 19, n. 3, p. 245-253, 2011. | |
dc.identifier.doi | 10.1017/S0967199410000298 | |
dc.identifier.file | WOS000292281400007.pdf | |
dc.identifier.issn | 0967-1994 | |
dc.identifier.uri | http://hdl.handle.net/11449/2822 | |
dc.identifier.wos | WOS:000292281400007 | |
dc.language.iso | eng | |
dc.publisher | Cambridge University Press | |
dc.relation.ispartof | Zygote | |
dc.relation.ispartofjcr | 1.114 | |
dc.relation.ispartofsjr | 0,387 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | Epigonial testes | en |
dc.subject | Germinal papilla | en |
dc.subject | Intratesticular duct | en |
dc.subject | Sertoli cell | en |
dc.subject | Spermatoblast | en |
dc.title | Testicular structure and spermatogenesis of Amazonian freshwater cururu stingray Potamotrygon cf. histrix | en |
dc.type | Artigo | |
dcterms.license | http://journals.cambridge.org/action/displaySpecialPage?pageId=4676# | |
dcterms.rightsHolder | Cambridge Univ Press |
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