Analysis of annuli in otoliths, age distribution and growth rates of the Namibian hake (Merluccius capensis)
Autor(a) principal: | |
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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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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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7160 |
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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 |
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1799133146545913856 |