Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorInstituto Nacional de Pesquisas da Amazonia-
Autor(es): dc.contributorUniversidade Estadual de Mato Grossodo Sul-
Autor(es): dc.creatorLoureņco, da Luzia Silva [UNESP]-
Autor(es): dc.creatorFernandes, Izaias Médice-
Autor(es): dc.creatorSúarez, Yzel Rondón-
Data de aceite: dc.date.accessioned2022-08-04T22:02:54Z-
Data de disponibilização: dc.date.available2022-08-04T22:02:54Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2012-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/S1984-4670201 2000400003-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219829-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219829-
Descrição: dc.descriptionThe present study has assessed spatial and temporal variations in the length structure of Hemigrammus marginatus Ellis, 1911 and estimated growth parameters for the species. Sampling was carried out in five streams in the Vitoria and Piravevě sub-basins of the Ivinhema River from January to December 2002. A total of 933 specimens of H. marginatus were caught (97 in the Vitoria sub-basin and 836 in the Piravevě sub-basin). Mean length of the individuals caught in the Piravevě sub-basin was shorter (21.58 mm, SD = 4.67) than that of individuals caught in the Vitoria sub-basin (29.24 mm, SD = 4.42). Analysis of condition factor calculated from the weight/length relationship revealed that the values were constant both spatially (between sub-basins) and temporally (throughout the year). In the Piravevě sub-basin, the theoretical maximal length estimated for this species was 37.26 mm, with natural mortality rate of 1.22 year1, growth rate (k) of 0.66 year1, and growth performance index (9) of 3.80 and 4.25 years of longevity. The input of new individuals in the population occurs twice per year, with greater recruitment at the peak of the rainy season (May) and the peak of the dry season (August). © 2012 Sociedade Brasileira de Zoología. All rights reserved.-
Descrição: dc.descriptionUniversidade Estadual Paulista, Caixa Postal 199, 13506-900 Rio Claro, SP-
Descrição: dc.descriptionInstituto Nacional de Pesquisas da Amazonia, Caixa Postal 478, 69011-970 Manaus, AM-
Descrição: dc.descriptionLaboratorio de Ecologia Centro Integrado de Análise e Monitoramento Ambiental Universidade Estadual de Mato Grossodo Sul, Rodovia Dourados-ltahum km 12, 79804-970 Dourados, MS-
Descrição: dc.descriptionUniversidade Estadual Paulista, Caixa Postal 199, 13506-900 Rio Claro, SP-
Formato: dc.format300-307-
Idioma: dc.languageen-
Relação: dc.relationZoologia-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectAge-
Palavras-chave: dc.subjectGrowth-
Palavras-chave: dc.subjectMortality-
Palavras-chave: dc.subjectRecruitment-
Palavras-chave: dc.subjectWeight-length relationship-
Título: dc.titleSpatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil-
Tipo de arquivo: dc.typelivro digital-
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