The administration of exogenous prostaglandin may improve ovulation in pacu (Piaractus mesopotamicus)

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dc.contributor.authorCriscuolo-Urbinati, E. [UNESP]
dc.contributor.authorKuradomi, R. Y. [UNESP]
dc.contributor.authorUrbinati, Elisabeth Criscuolo [UNESP]
dc.contributor.authorBatlouni, S. R. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:12:33Z
dc.date.available2014-05-20T13:12:33Z
dc.date.issued2012-12-01
dc.description.abstractBased on the reports of unsuccessful ovulation in pacu (Piaractus mesopotamicus) by fish farmers and researchers undertaking artificial reproduction programs, we evaluated the use of prostaglandin F (PGF) to improve pacu ovulation. This study was conducted during two spawning seasons (2009/2010 and 2010/2011) with two samplings in the first season and one sampling in the second season. A total of 45 females was sampled in this study. The control group was injected with carp pituitary extract (crude extract, 6 mg/kg), and the treatment group received PGF (2 mL per fish in the 2009/2010 season and 5 mL per fish in the 2010/2011 season) in addition to the crude extract. In both seasons, 100% (N = 4, 2009/2010 first sampling; N = 5, 2009/2010 second sampling; and N = 3, 2010/2011) of the PGF-treated fish spawned. In contrast, 53.0% (N = 9) and 83.3% (N = 10) of the control fish spawned in the first and second samplings of the 2009/2010 season, respectively, and only 25.0% (N = 1) spawned in the 2010/2011 season. Fecundity, fertility, and hatching rates did not differ (P > 0.05) between the treated and control fish. Based on oocyte volume frequency analysis, ovaries of the control fish had more (P < 0.05) vitellogenic oocytes with germinal vesicle breakdown that remained unovulated after spawning, whereas more (P < 0.05) of previtellogenic oocytes were present in the ovaries of the PGF-treated fish. In conclusion, administration of exogenous prostaglandin may improve the outcome of hormonally induced spawning in tropical migratory fish. (C) 2012 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv São Paulo State UNESP, Aquaculture Ctr UNESP CAUNESP, São Paulo, Brazil
dc.description.affiliationUniv São Paulo State UNESP, Fac Agr & Vet, São Paulo, Brazil
dc.description.affiliationUnespUniv São Paulo State UNESP, Aquaculture Ctr UNESP CAUNESP, São Paulo, Brazil
dc.description.affiliationUnespUniv São Paulo State UNESP, Fac Agr & Vet, São Paulo, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent2087-2094
dc.identifierhttp://dx.doi.org/10.1016/j.theriogenology.2012.08.001
dc.identifier.citationTheriogenology. New York: Elsevier B.V., v. 78, n. 9, p. 2087-2094, 2012.
dc.identifier.doi10.1016/j.theriogenology.2012.08.001
dc.identifier.issn0093-691X
dc.identifier.urihttp://hdl.handle.net/11449/504
dc.identifier.wosWOS:000310858700021
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofTheriogenology
dc.relation.ispartofjcr2.136
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPacuen
dc.subjectProstaglandinsen
dc.subjectOvulationen
dc.subjectOvarian folliclesen
dc.titleThe administration of exogenous prostaglandin may improve ovulation in pacu (Piaractus mesopotamicus)en
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.

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