Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil

Detalhes bibliográficos
Autor(a) principal: AMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.
Data de Publicação: 2018
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
Texto Completo: http://repositorio.uem.br:8080/jspui/handle/1/5156
Resumo: AMBROSIO, Ângela Maria; GOMES, Luiz Carlos; AGOSTINHO, Angelo Antonio. Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil. Revista Brasileira de Zoologia, Curitiba, v.20, n.2, p.183-190, 2003.
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spelling Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, BrazilIdadeCrescimentoHypophthalmus edentatusReservatório de ItaipuParaná, RioBrasil.AgeGrowthHypophthalmus edentatusItaipu ReservoirOtolithsParaná RiverBrazil.Ciências BiológicasEcologiaAMBROSIO, Ângela Maria; GOMES, Luiz Carlos; AGOSTINHO, Angelo Antonio. Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil. Revista Brasileira de Zoologia, Curitiba, v.20, n.2, p.183-190, 2003.Age and growth of Hypophthalmus edentatus (Spix, 1829) (Siluriformes, Hypophthalmidae) was determined. Data were collected from December 1983 to November 1984 and from April 1997 to March 1998 in the Itaipu Reservoir. To evaluate reading consistency, it was analyzed the coefficient of variation of the total length for each annulus observed in the otoliths. Through marginal increment analysis, it was determined that the annuli formed annually (April) indicating that otoliths may be used in the study of age and growth of the species. Food supply was considered the main factor affecting growth and annuli formation in both periods. Back-calculated data were used to assess if the Rosa Lee phenomenon, commom in selective samples like commercial fishing, occured. It was used also, the von Bertalanffy model to obtain the length growth curve. Parameters k and L (∞); were estimated by nonlinear regression for sexes separated. Although nom significant, k was greater in 1983-1984 than in 1997-1998. Inversely the L(∞); was greater for females, but k was smaller. Age at first maturation and annual instantaneous mortality (A) were similar in both sexes and years analyzed.BrasilUEM2018-10-30T19:42:49Z2018-10-30T19:42:49Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://repositorio.uem.br:8080/jspui/handle/1/5156porAMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.info:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)instname:Universidade Estadual de Maringá (UEM)instacron:UEM2018-10-30T19:50:41Zoai:localhost:1/5156Repositório InstitucionalPUBhttp://repositorio.uem.br:8080/oai/requestopendoar:2024-04-23T14:58:21.333147Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
title Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
spellingShingle Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
AMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.
Idade
Crescimento
Hypophthalmus edentatus
Reservatório de Itaipu
Paraná, Rio
Brasil.
Age
Growth
Hypophthalmus edentatus
Itaipu Reservoir
Otoliths
Paraná River
Brazil.
Ciências Biológicas
Ecologia
title_short Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
title_full Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
title_fullStr Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
title_full_unstemmed Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
title_sort Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil
author AMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.
author_facet AMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.
author_role author
dc.contributor.author.fl_str_mv AMBRÓSIO, A.M.; GOMES, L.C.; AGOSTINHO, A.A.
dc.subject.por.fl_str_mv Idade
Crescimento
Hypophthalmus edentatus
Reservatório de Itaipu
Paraná, Rio
Brasil.
Age
Growth
Hypophthalmus edentatus
Itaipu Reservoir
Otoliths
Paraná River
Brazil.
Ciências Biológicas
Ecologia
topic Idade
Crescimento
Hypophthalmus edentatus
Reservatório de Itaipu
Paraná, Rio
Brasil.
Age
Growth
Hypophthalmus edentatus
Itaipu Reservoir
Otoliths
Paraná River
Brazil.
Ciências Biológicas
Ecologia
description AMBROSIO, Ângela Maria; GOMES, Luiz Carlos; AGOSTINHO, Angelo Antonio. Age and growth of Hypophthalmus edentatus (Spix), (Siluriformes, Hypophthalmidae) in the Itaipu Reservoir, Paraná, Brazil. Revista Brasileira de Zoologia, Curitiba, v.20, n.2, p.183-190, 2003.
publishDate 2018
dc.date.none.fl_str_mv 2018-10-30T19:42:49Z
2018-10-30T19:42:49Z
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://repositorio.uem.br:8080/jspui/handle/1/5156
url http://repositorio.uem.br:8080/jspui/handle/1/5156
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Brasil
UEM
publisher.none.fl_str_mv Brasil
UEM
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
collection Repositório Institucional da Universidade Estadual de Maringá (RI-UEM)
repository.name.fl_str_mv Repositório Institucional da Universidade Estadual de Maringá (RI-UEM) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv
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