Artigo

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

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...

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Autor principal: Loure?co, da Luzia Silva
Outros Autores: Fernandes, Izaias Médice, Suárez, Yzel Rondón
Grau: Artigo
Idioma: English
Publicado em: Zoologia 2020
Assuntos:
Characidae
Characiformes
Hemigrammus Marginatus
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/15281
id oai:repositorio:1-15281
recordtype dspace
spelling oai:repositorio:1-15281 Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil Loure?co, da Luzia Silva Fernandes, Izaias Médice Suárez, Yzel Rondón Characidae Characiformes Hemigrammus Marginatus 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. 2020-05-07T14:22:48Z 2020-05-07T14:22:48Z 2012 Artigo https://repositorio.inpa.gov.br/handle/1/15281 10.1590/S1984-46702012000400003 en Volume 29, Número 4, Pags. 300-307 Attribution-NonCommercial-NoDerivs 3.0 Brazil http://creativecommons.org/licenses/by-nc-nd/3.0/br/ application/pdf Zoologia
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Characidae
Characiformes
Hemigrammus Marginatus
spellingShingle Characidae
Characiformes
Hemigrammus Marginatus
Loure?co, da Luzia Silva
Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
topic_facet Characidae
Characiformes
Hemigrammus Marginatus
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.
format Artigo
author Loure?co, da Luzia Silva
author2 Fernandes, Izaias Médice
Suárez, Yzel Rondón
author2Str Fernandes, Izaias Médice
Suárez, Yzel Rondón
title Spatial and temporal variation in population structure of Hemigrammus marginatus (Characiformes: Characidae) in streams of the Ivinhema River Basin, Brazil
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
publisher Zoologia
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/15281
_version_ 1787143328241811456
score 11.755432

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