Ultrastructural and morphometric analysis of gametes in neotropical teleost fishes

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorMurgas, Luis David Solis-
Autor(es): dc.creatorPaulino, Michelle Sampaio-
Autor(es): dc.creatorPalhares, Priscila Cotta-
Autor(es): dc.creatorMiliorini, Alessio Batista-
Autor(es): dc.creatorAlves, Eduardo-
Autor(es): dc.creatorFelizardo, Viviane de Oliveira-
Data de aceite: dc.date.accessioned2026-02-09T12:07:06Z-
Data de disponibilização: dc.date.available2026-02-09T12:07:06Z-
Data de envio: dc.date.issued2018-08-17-
Data de envio: dc.date.issued2018-08-17-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/30029-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1154689-
Descrição: dc.descriptionThis study was designed to identify and measure the gametes of neotropical fish using ultrastructural analysis. Number, shape and size of micropyle and ultrastructure of egg membrane and of the micropyle canal; the number and length of the longest and shortest ridge in the micropyle region beyond the structures of the sperm cell have been used as taxonomic tool in ichthyology . Gametes of six breeding pairs of Piaractus mesopotamicus, Brycon orbignyanus, Salminus brasiliensis and Prochilodus lineatus were collected, fixed and subjected to scanning electron microscopy for the observation and measurement of the structures. The results showed many similarities between the gametes of the studied species. An array of grooves and folds was observed in the micropyle in all species but not in the Prochilodus lineatus oocytes. The micropyle was funnel-shaped in all species. The oocytes showed a great variation in the diameters of major and minor micropyle ostium, evidencing different reproductive strategies. The sperm cells showed simple structures with ovoide heads, a cylindrical midpiece with a single flagellum and no acrosome. This study may contribute to a better understanding of fish reproductive biology, conservation genetics and breeding studies.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherInsight Medical Publishing-
Direitos: dc.rightsacesso aberto-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
Direitos: dc.rightshttp://creativecommons.org/licenses/by/4.0/-
???dc.source???: dc.sourceJournal of FisheriesSciences.com-
Palavras-chave: dc.subjectPeixes - Gametas-
Palavras-chave: dc.subjectPeixes - Biologia reprodutiva-
Palavras-chave: dc.subjectPeixes - Melhoramento genético-
Palavras-chave: dc.subjectFish - Gametes-
Palavras-chave: dc.subjectFish - Reproductive biology-
Palavras-chave: dc.subjectFish - Genetic improvement-
Título: dc.titleUltrastructural and morphometric analysis of gametes in neotropical teleost fishes-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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