Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal

Detalhes bibliográficos
Autor(a) principal: Gomes, César Paulo Vieira
Data de Publicação: 2016
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/9926
Resumo: Dissertação de mestrado, Biologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016
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spelling Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, PortugalAphanopus carboBiologiaAphanopus spp.EstandardizaçãoDPUEArquipélago da MadeiraDomínio/Área Científica::Ciências Naturais::Outras Ciências NaturaisDissertação de mestrado, Biologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016The black scabbardfish (Aphanopus carbo Lowe, 1839) is a benthopelagic species, member of the Trichiuridae family with great commercial and scientific importance in Madeira Archipelago and in the entire NE Atlantic. This work, as part of a bicephalous approach, had two main objectives: perform a biological analysis of A. carbo, and to standardize commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago (A. carbo is not separated from the sympatric species A. intermedius for commercial purposes). In terms of A. carbo biology, individuals were collected in Funchal harbour between 2010 and 2015. In this part of the study, the population structure of A. carbo was analysed through individual length, weight and sex. The reproductive cycle was inferred through the analysis of GSI, HSI and Krel monthly trends. L50s were estimated by fitting maturity ogives and WLRs and LLRs were calculated through regressions. Regarding the LPUE standardization, fishery-dependent data was analysed from 2008 to 2015. This part focused on fleet characteristics, the performance of landing trends and effort units. Nominal LPUE was standardized through linear model. The factors affecting the variability of LPUE were obtained and analysis of the overall state of the fishery was made. In general, A. carbo females attain the largest length and weight, the overall sex-ratio differed from 1:1 ratio, with females outnumbering males, spawning is performed in the last quarter of the year, L50s were higher in females than in males, and it exhibits isometric growth in terms of WLRs (except for males) and allometric growth in LLRs. The standardization of commercial LPUE data revealed an hyperstability state in Aphanopus spp. fishery in Madeira EEZ. To compensate lower catches in traditional fishing grounds, fishermen exploit new areas, resulting in stable landing performances. Thus, precautionary management policies are required to sustainably exploit this resource.Andrade, José PedroDelgado, JoãoSapientiaGomes, César Paulo Vieira2017-09-01T16:22:34Z2016-12-1220162016-12-12T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10400.1/9926TID:201706695enginfo: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:RCAAP2023-07-24T10:21:29Zoai:sapientia.ualg.pt:10400.1/9926Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:01:44.548395Repositório 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 Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
title Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
spellingShingle Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
Gomes, César Paulo Vieira
Aphanopus carbo
Biologia
Aphanopus spp.
Estandardização
DPUE
Arquipélago da Madeira
Domínio/Área Científica::Ciências Naturais::Outras Ciências Naturais
title_short Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
title_full Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
title_fullStr Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
title_full_unstemmed Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
title_sort Biology of black scabbardfish (Aphanopus carbo Lowe, 1839) and standardization of commercial LPUE data of Aphanopus spp. landed in Madeira Archipelago, Portugal
author Gomes, César Paulo Vieira
author_facet Gomes, César Paulo Vieira
author_role author
dc.contributor.none.fl_str_mv Andrade, José Pedro
Delgado, João
Sapientia
dc.contributor.author.fl_str_mv Gomes, César Paulo Vieira
dc.subject.por.fl_str_mv Aphanopus carbo
Biologia
Aphanopus spp.
Estandardização
DPUE
Arquipélago da Madeira
Domínio/Área Científica::Ciências Naturais::Outras Ciências Naturais
topic Aphanopus carbo
Biologia
Aphanopus spp.
Estandardização
DPUE
Arquipélago da Madeira
Domínio/Área Científica::Ciências Naturais::Outras Ciências Naturais
description Dissertação de mestrado, Biologia Marinha, Faculdade de Ciências e Tecnologia, Universidade do Algarve, 2016
publishDate 2016
dc.date.none.fl_str_mv 2016-12-12
2016
2016-12-12T00:00:00Z
2017-09-01T16:22:34Z
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/10400.1/9926
TID:201706695
url http://hdl.handle.net/10400.1/9926
identifier_str_mv TID:201706695
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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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