Attempts for increasing Astyanax altiparanae spawning rates and percentage of responsive oocytes

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAriki, Daniel Guimarães Figueiredo-
Autor(es): dc.creatorRoza de Abreu, Mariana-
Autor(es): dc.creatorde Jesus Silva, Laíza Maria-
Autor(es): dc.creatorSato, Rafael Tomoda-
Autor(es): dc.creatorBatlouni, Sergio Ricardo-
Data de aceite: dc.date.accessioned2025-08-21T19:36:01Z-
Data de disponibilização: dc.date.available2025-08-21T19:36:01Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.anireprosci.2023.107262-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/248951-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/248951-
Descrição: dc.descriptionIn this study, we aimed to propose changes in the protocol of cultured Astyanax altiparanae hypophysation to increase the maximum ovulation rate of 60% registered previously. To that two consecutive experiments were conducted. In the first experiment, three carp pituitary homogenate (CPH) doses (3, 6, and 9 mg/kg) were administered in a single injection, while in the second experiment, the 6 mg/kg CPH dose was tested either in single or double injections. In the first experiment, a single injection of 3 mg/kg CPH did not induce final oocyte maturation or spawning, while a dose of 6 mg/kg CPH resulted in an increase in the plasma level of prostaglandin (PGF2α) at ovulation. The single higher dose of 9 mg/kg CPH did not improve reproductive performance and even though anticipated the resumption of meiosis it was detrimental to the spawning rate. In the second experiment, the dose of 6 mg/kg CPH fractionated into two injections led to a higher spawning rate, spawning volume per female body mass, frequency of post-ovulatory complexes, and PGF2α concentration at ovulation compared to the single injection. The most effective treatment remained the 6 mg/kg of CPH fractionated into two injections, but still providing very low proportion of ovulated females (∼40 %). Overall, this study indicates that the spawning protocols for this species need to be improved to induce ovulation in a larger number of females and be more potent in those females that respond positively.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionCentro de Aquicultura da UNESP – CAUNESP Universidade Estadual Paulista – UNESP, Via de Acesso Prof. Paulo Donato Castellane, S/N, SP-
Descrição: dc.descriptionCentro de Aquicultura da UNESP – CAUNESP Universidade Estadual Paulista – UNESP, Via de Acesso Prof. Paulo Donato Castellane, S/N, SP-
Descrição: dc.descriptionFAPESP: #2016/25988–7-
Descrição: dc.descriptionCAPES: 001-
Idioma: dc.languageen-
Relação: dc.relationAnimal Reproduction Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectHormonal induction-
Palavras-chave: dc.subjectHyphophysation-
Palavras-chave: dc.subjectLambari-
Palavras-chave: dc.subjectPGF2α-
Palavras-chave: dc.subjectProstaglandin-
Título: dc.titleAttempts for increasing Astyanax altiparanae spawning rates and percentage of responsive oocytes-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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