Structural and ultrastructural analysis of embryonic development of Prochilodus lineatus (Valenciennes, 1836) (Characiforme ; Prochilodontidae)

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dc.contributor.authorNinhaus-Silveira, Alexandre
dc.contributor.authorForesti, Fausto
dc.contributor.authorde Azevedo, Alexandre
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:21:48Z
dc.date.available2014-05-20T15:21:48Z
dc.date.issued2006-08-01
dc.description.abstractThis survey was performed to characterize the embryogenesis of Prochilodus lineatus. Seven stages of embryo development were identified - zygote, cleavage, blastula, gastrula, segmentation, larval and hatching - after a period of incubation of 22h (24 degrees C) or 14h (28 degrees C). The following cleavage pattern was identified: the first plane was vertical (2 blastomeres); the second was vertical and perpendicular to the first (4 blastorneres); the third was vertical and parallel to the first (4 x 2); the fourth cleavage was vertical and parallel to the second (4 x 4); the fifth was vertical and parallel to the first (4 x 8); and the sixth cleavage was horizontal (64 blastomeres). At the blastula stage (3.0-4.0 h (24 degrees C); 1.66-2.0h (28 degrees C) irregular spaces were detected and periblast structuring was initiated. At the gastrula stage (4.0-8.0 h (24 degrees C); 3.0-6.0 h (28 degrees C) the epiboly, convergence and cell movements, as well as the formation of embryonic layers, had begun. The segmentation stage (10.0-15.0h (24 degrees C); 7.0-10.0h (28 degrees C)) was characterized by a rudimentary formation of organs and systems (somites, optic vesicle and intestinal delimitation). The embryo at the larval stage (16.0-21.0 h (24 degrees C); 11.0-13.0 h (28 degrees C)) showed a free tail, more than 25 somites, an optic vesicle and a ready-to-hatch larval shape. The blastomeres at cleavage stage had disorganized nuclei indicating high mitotic activity. At gastrula, the blastomeres and the periblast had euchromatic nuclei and a large number of mitochondria and vesicles. The yolk was organized into globose sacs, which were dispersed into small pieces prior to absorption.en
dc.description.affiliationUniv Estadual Paulista, Dept Biol & Zootecnia, BR-15385000 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Morfol, BR-15385000 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Biol & Zootecnia, BR-15385000 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Morfol, BR-15385000 São Paulo, Brazil
dc.format.extent217-229
dc.identifierhttp://dx.doi.org/10.1017/S096719940600373X
dc.identifier.citationZygote. New York: Cambridge Univ Press, v. 14, n. 3, p. 217-229, 2006.
dc.identifier.doi10.1017/S096719940600373X
dc.identifier.fileWOS000239106300005.pdf
dc.identifier.issn0967-1994
dc.identifier.urihttp://hdl.handle.net/11449/32908
dc.identifier.wosWOS:000239106300005
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.subjectCharaciformept
dc.subjectembryopt
dc.subjectembryogenesispt
dc.subjectProchilodus lineatuspt
dc.subjectteleostpt
dc.titleStructural and ultrastructural analysis of embryonic development of Prochilodus lineatus (Valenciennes, 1836) (Characiforme ; Prochilodontidae)en
dc.typeArtigo
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676
dcterms.rightsHolderCambridge Univ Press
unesp.author.lattes9568814835325380[1]
unesp.author.orcid0000-0003-0738-0862[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Biologia e Zootecnia - FEIS