Structural analysis of the embryonic development in Brycon cephalus (Gunther, 1869)

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dc.contributor.authorde Alexandre, Juliana Sversut [UNESP]
dc.contributor.authorNinhaus-Silveira, Alexandre [UNESP]
dc.contributor.authorVerissimo-Silveira, Rosicleire [UNESP]
dc.contributor.authorBuzollo, Hellen [UNESP]
dc.contributor.authorSenhorini, Jose Augusto
dc.contributor.authorChaguri, Milena Penteado [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionICMBIO
dc.date.accessioned2013-09-30T18:12:16Z
dc.date.accessioned2014-05-20T13:41:15Z
dc.date.available2013-09-30T18:12:16Z
dc.date.available2014-05-20T13:41:15Z
dc.date.issued2010-05-01
dc.description.abstractThe embryogertesis of Brycon cephnius was established in seven stages: zygote, cleavage, blastula, gastrula, segmentation, larval and hatching, in an incubation period of 11 h (26 degrees C). The zygote phase was observed directly after fertilization and egg hydration. Cleavage began at 0.5 h of incubation and extended up to the morula phase (1.5 h; +100 blastomeres). Cleavage was meroblastic and underwent the following division pattern: the first five divisions were vertical and perpendicular to each other, following the model 2 x 2, 4 x 2, 4 x 4 and 4 x 8. The sixth division was horizontal and occurred at 1.25 h after fertilization, giving rise to two cell layers (4 x 8 x 2) with 64 blastomeres. At the blastula stage (1.25-1.5 h), an irregular space between the blastomeres, the blastocoele, could be detected and the periblast structure initiated. The gastrula (1.75-6.0 h) was characterized by the morphogenetic movements of epiboly, convergence and cell involution, and formation of the embryonic axis. The segmentation stage (7-9 h) comprised the development of somites, the notochord, optic, otic and Kupffer's vesicles, neural tube, primitive intestine and ended with the release of the tail. The larval stage (up to 10 h) was characterized by the presence of 30 somites and growth and elongation of the larvae. At the hatching stage, the embryos presented more than 30 somites and exhibited swimming movements and a soft chorion. The blastomeres presented euchromatic nuclei, indicating a high mitotic activity and many yolk globules in the cytoplasm. The periblast was constituted of a layer with several nuclei and many vesicles, which grew during the epiboly movement.en
dc.description.affiliationSão Paulo State Univ, FMVZ, Dept Anim Prod, BR-18610000 Botucatu, SP, Brazil
dc.description.affiliationSão Paulo State Univ, FEIS, Biol & Zootecny Dept, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationICMBIO, Ctr Pesquisa & Gestao Recursos Pesqueiros Contine, Pirassununga, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, FMVZ, Dept Anim Prod, BR-18610000 Botucatu, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, FEIS, Biol & Zootecny Dept, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipCentro de Pesquisa e Gestao de Recursos Pesqueiros Continentais - ICMBIO/Pirassununga /São Paulo/Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent173-183
dc.identifierhttp://dx.doi.org/10.1017/S0967199409990190
dc.identifier.citationZygote. New York: Cambridge Univ Press, v. 18, n. 2, p. 173-183, 2010.
dc.identifier.doi10.1017/S0967199409990190
dc.identifier.fileWOS000276638600009.pdf
dc.identifier.issn0967-1994
dc.identifier.urihttp://hdl.handle.net/11449/14293
dc.identifier.wosWOS:000276638600009
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.subjectCharacidaeen
dc.subjectCharaciformeen
dc.subjectEmbryoen
dc.subjectEmbryogenesisen
dc.subjectMatrinxaen
dc.titleStructural analysis of the embryonic development in Brycon cephalus (Gunther, 1869)en
dc.typeArtigo
dcterms.licensehttp://journals.cambridge.org/action/displaySpecialPage?pageId=4676#
dcterms.rightsHolderCambridge Univ Press
unesp.author.lattes9568814835325380[2]
unesp.author.orcid0000-0003-0738-0862[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Medicina Veterinária e Zootecnia, Botucatupt

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Artigos - Produção Animal - FMVZ
Artigos - Biologia e Zootecnia - FEIS