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

Detalhes bibliográficos
Autor(a) principal: Loureņco, da Luzia Silva [UNESP]
Data de Publicação: 2012
Outros Autores: Fernandes, Izaias Médice, Súarez, Yzel Rondón
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1984-4670201 2000400003
http://hdl.handle.net/11449/219829
Resumo: The 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.
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spelling Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, BrazilAgeGrowthMortalityRecruitmentWeight-length relationshipThe 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.Universidade Estadual Paulista, Caixa Postal 199, 13506-900 Rio Claro, SPInstituto Nacional de Pesquisas da Amazonia, Caixa Postal 478, 69011-970 Manaus, AMLaboratorio de Ecologia Centro Integrado de Análise e Monitoramento Ambiental Universidade Estadual de Mato Grossodo Sul, Rodovia Dourados-ltahum km 12, 79804-970 Dourados, MSUniversidade Estadual Paulista, Caixa Postal 199, 13506-900 Rio Claro, SPUniversidade Estadual Paulista (UNESP)Instituto Nacional de Pesquisas da AmazoniaUniversidade Estadual de Mato Grossodo SulLoureņco, da Luzia Silva [UNESP]Fernandes, Izaias MédiceSúarez, Yzel Rondón2022-04-28T18:58:00Z2022-04-28T18:58:00Z2012-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article300-307http://dx.doi.org/10.1590/S1984-4670201 2000400003Zoologia, v. 29, n. 4, p. 300-307, 2012.1984-4670http://hdl.handle.net/11449/21982910.1590/S1984-4670201 20004000032-s2.0-84865610587Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengZoologiainfo:eu-repo/semantics/openAccess2022-04-28T18:58:00Zoai:repositorio.unesp.br:11449/219829Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:59:31.716711Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
title Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
spellingShingle Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
Loureņco, da Luzia Silva [UNESP]
Age
Growth
Mortality
Recruitment
Weight-length relationship
title_short Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
title_full Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
title_fullStr Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
title_full_unstemmed Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
title_sort Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
author Loureņco, da Luzia Silva [UNESP]
author_facet Loureņco, da Luzia Silva [UNESP]
Fernandes, Izaias Médice
Súarez, Yzel Rondón
author_role author
author2 Fernandes, Izaias Médice
Súarez, Yzel Rondón
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Instituto Nacional de Pesquisas da Amazonia
Universidade Estadual de Mato Grossodo Sul
dc.contributor.author.fl_str_mv Loureņco, da Luzia Silva [UNESP]
Fernandes, Izaias Médice
Súarez, Yzel Rondón
dc.subject.por.fl_str_mv Age
Growth
Mortality
Recruitment
Weight-length relationship
topic Age
Growth
Mortality
Recruitment
Weight-length relationship
description The 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.
publishDate 2012
dc.date.none.fl_str_mv 2012-08-01
2022-04-28T18:58:00Z
2022-04-28T18:58:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1590/S1984-4670201 2000400003
Zoologia, v. 29, n. 4, p. 300-307, 2012.
1984-4670
http://hdl.handle.net/11449/219829
10.1590/S1984-4670201 2000400003
2-s2.0-84865610587
url http://dx.doi.org/10.1590/S1984-4670201 2000400003
http://hdl.handle.net/11449/219829
identifier_str_mv Zoologia, v. 29, n. 4, p. 300-307, 2012.
1984-4670
10.1590/S1984-4670201 2000400003
2-s2.0-84865610587
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Zoologia
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 300-307
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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