Reproductive performance of lambari (Astyanax altiparanae) in a seminatural system using different protocols

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Federal do Amazonas (UFAM)-
Autor(es): dc.creatorRoza de Abreu, Mariana [UNESP]-
Autor(es): dc.creatorSilva, Laíza Maria de Jesus [UNESP]-
Autor(es): dc.creatorFigueiredo-Ariki, Daniel Guimarães [UNESP]-
Autor(es): dc.creatorSato, Rafael Tomoda [UNESP]-
Autor(es): dc.creatorKuradomi, Rafael Yutaka [UNESP]-
Autor(es): dc.creatorBatlouni, Sergio Ricardo [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:47:32Z-
Data de disponibilização: dc.date.available2022-02-22T00:47:32Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1111/are.14905-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/206578-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/206578-
Descrição: dc.descriptionWe evaluated lambari (Astyanax altiparanae) reproductive performance by administration of gradually increasing doses of analogue of salmon gonadotropin-releasing hormone (sGnRHa). We performed two consecutive experiments applying six sGnRHa single doses in three replicates (ranging from 1 to 160 µg/kg) (Exp. 1) and three sGnRHa-fractioned doses in four replicates (10% + 90% – 12 hr interval) (10, 100 and 1,000 µg/kg) (Exp. 2) in 6 months old breeders. In both experiments, 6 mg of Carp pituitary extract (CPE)/kg and saline solution (without hormonal therapy) were used as positive and negative controls, respectively. Reproductive performance was recorded for both experiments; and quantification of 17α-20β-dihydroxy-4-pregnen-3-one (17,20β-P) and prostaglandin F2α plasma levels and ovarian histological evaluations were introduced in Exp. 2. Using a single dose, the spawning rate was low and similar between all groups (from 0% to 20%). Using fractioned doses, the spawning rate of CPE (60%) was higher than other groups (from 10% to 25%), but similar to 1,000 µg of sGnRHa/kg (40%). 17,20β-P increased at the final sampling regardless of treatment (including controls) or successful spawning, suggesting that the simple grouping of fish caused this increase. 17,20β-P and PGF2α plasma levels did not explain ovulation failures in this species. CPE-fractioned doses improved lambari ovulation and provided final maturation in all evaluated females; however, hormonal induction was not conditional for obtaining ovulation since spawning was registered in negative control. Concluding, CPE-fractioned doses protocol can be applied to increase reproductive performance of this species.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCentro de Aquicultura da UNESP – CAUNESP Universidade Estadual Paulista – UNESP-
Descrição: dc.descriptionEmbrapa Amazônia Ocidental, Rodovia AM-010, Km 29, s/n, Zona Rural – CEP: 69010-970, Caixa Postal 319-
Descrição: dc.descriptionInstituto de Ciências Exatas e Tecnologia (ICET) Universidade Federal do Amazonas (UFAM)-
Descrição: dc.descriptionCentro de Aquicultura da UNESP – CAUNESP Universidade Estadual Paulista – UNESP-
Descrição: dc.descriptionFAPESP: 2016/25988-7-
Descrição: dc.descriptionFAPESP: 2019/05741-5-
Formato: dc.format471-483-
Idioma: dc.languageen-
Relação: dc.relationAquaculture Research-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectbrood-stock management-
Palavras-chave: dc.subjectcontrolled reproduction-
Palavras-chave: dc.subjectegg maturation and ovulation-
Palavras-chave: dc.subjectovarian development-
Palavras-chave: dc.subjectprostaglandin-
Palavras-chave: dc.subjectsex steroids hormones-
Título: dc.titleReproductive performance of lambari (Astyanax altiparanae) in a seminatural system using different protocols-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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