Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)

Detalhes bibliográficos
Autor(a) principal: Brinkman, Faye Rachel Volente
Data de Publicação: 2007
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/263
Resumo: Dissertação mest., Gestão da Água e da Costa, Universidade do Algarve, 2007
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spelling Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)TesesMerluccius capensisCrescimentoOtólitosIdadeNamíbiaDissertação mest., Gestão da Água e da Costa, Universidade do Algarve, 2007Age and growth estimates of Cape hake (Merluccius capensis), in the waters off Namibia were described from 804 specimens collected during January and February 2003. Each specimen was aged twice using whole otoliths. Otolith growth measurements was taken and used in back-calculated length-at-age data of M. capensis. Direct average otolith growth measurements have shown that up to three false rings formed prior to the first annulus. Ogives demonstrated the differences in otolith diameter, location frequency between the annuli and false rings. A power fish length-otolith diameter relationship used for back-calculation is: (L = 1.39 * OD). The average back-calculated lengths for the first four years of life were 19.3, 25.6, 31.8 and 38.2 cm total fish length. Age composition, estimated from an age length key, indicated that juveniles and young fish predominate in survey and commercial catches. The von Bertalanffy growth parameters was (growth coefficient, K = 0.07; asymptotic length, = 123.13; = -1.5). Sexual maturity was reached at age 1.67 years. The high correlation between otolith weight and age permits the use of otolith weight as a substitute for future age assessments. 1717.1∞L0t KeyAndrade, José PedroWilhelm, MargitNewton, AliceSapientiaBrinkman, Faye Rachel Volente2011-09-07T16:04:17Z20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.1/263eng574.5 BRI*Ana Caveinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-24T10:11:00Zoai:sapientia.ualg.pt:10400.1/263Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:54:38.954775Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
title Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
spellingShingle Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
Brinkman, Faye Rachel Volente
Teses
Merluccius capensis
Crescimento
Otólitos
Idade
Namíbia
title_short Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
title_full Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
title_fullStr Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
title_full_unstemmed Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
title_sort Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
author Brinkman, Faye Rachel Volente
author_facet Brinkman, Faye Rachel Volente
author_role author
dc.contributor.none.fl_str_mv Andrade, José Pedro
Wilhelm, Margit
Newton, Alice
Sapientia
dc.contributor.author.fl_str_mv Brinkman, Faye Rachel Volente
dc.subject.por.fl_str_mv Teses
Merluccius capensis
Crescimento
Otólitos
Idade
Namíbia
topic Teses
Merluccius capensis
Crescimento
Otólitos
Idade
Namíbia
description Dissertação mest., Gestão da Água e da Costa, Universidade do Algarve, 2007
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-01-01T00:00:00Z
2011-09-07T16:04:17Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
format masterThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.1/263
url http://hdl.handle.net/10400.1/263
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 574.5 BRI*Ana Cave
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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