Karyotypic diversity and evolutionary trends in the Neotropical catfish genus Hypostomus Lacepede, 1803 ( Teleostei, Siluriformes, Loricariidae)

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorUniv Oriente-
Autor(es): dc.creatorAlves, Anderson Luis-
Autor(es): dc.creatorBorba, Rafael Splendore de [UNESP]-
Autor(es): dc.creatorOliveira, Claudio [UNESP]-
Autor(es): dc.creatorNirchio, Mauro-
Autor(es): dc.creatorGranado, Angel-
Autor(es): dc.creatorForesti, Fausto [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:06:50Z-
Data de disponibilização: dc.date.available2022-02-22T00:06:50Z-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2020-12-09-
Data de envio: dc.date.issued2012-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3897/CompCytogen.v6i4.4028-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/195767-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/195767-
Descrição: dc.descriptionThe family Loricariidae with 813 nominal species is one of the largest fish families of the world. Hypostominae, its more complex subfamily, was recently divided into five tribes. The tribe Hypostomini is composed of a single genus, Hypostomus Lacepede, 1803, which exhibits the largest karyotypic diversity in the family Loricariidae. With the main objective of contributing to a better understanding of the relationship and the patterns of evolution among the karyotypes of Hypostomus species, cytogenetic studies were conducted in six species of the genus from Brazil and Venezuela. The results show a great chromosome variety with diploid numbers ranging from 2n= 68 to 2n= 76, with a clear predominance of acrocentric chromosomes. The Ag-NORs are located in terminal position in all species analyzed. Three species have single Ag-NORs (Hypostomus albopunctatus (Regan, 1908), H. prope plecostomus (Linnaeus, 1758), and H. prope paulinus (Ihering, 1905)) and three have multiple Ag-NORs (H. ancistroides (Ihering, 1911), H. prope iheringi (Regan, 1908), and H. strigaticeps (Regan, 1908)). In the process of karyotype evolution of the group, the main type of chromosome rearrangements was possibly centric fissions, which may have been facilitated by the putative tetraploid origin of Hypostomus species. The relationship between the karyotype changes and the evolution in the genus is discussed.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionEmbrapa Pesca & Aquicultura CNPASA, Palmas, Tocantins, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, Lab Citogenet, Rio Claro, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Morfol, Botucatu, SP, Brazil-
Descrição: dc.descriptionUniv Oriente, Inst Limnol, Caicara Del Orinoco, Estado Bolivar, Venezuela-
Descrição: dc.descriptionUniv Estadual Paulista Julio de Mesquita Filho UN, Lab Citogenet, Rio Claro, SP, Brazil-
Descrição: dc.descriptionUniv Estadual Paulista, Inst Biociencias, Dept Morfol, Botucatu, SP, Brazil-
Formato: dc.format443-452-
Idioma: dc.languageen-
Publicador: dc.publisherPensoft Publishers-
Relação: dc.relationComparative Cytogenetics-
???dc.source???: dc.sourceWeb of Science-
Palavras-chave: dc.subjectArmoured-catfish-
Palavras-chave: dc.subjectLoricariidae-
Palavras-chave: dc.subjectHypostomus-
Palavras-chave: dc.subjectkaryotype evolution-
Palavras-chave: dc.subjectAg-NORs-
Palavras-chave: dc.subjectcentric fission-
Palavras-chave: dc.subjectpolyploidy-
Título: dc.titleKaryotypic diversity and evolutionary trends in the Neotropical catfish genus Hypostomus Lacepede, 1803 ( Teleostei, Siluriformes, Loricariidae)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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