Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.13/4371 |
Resumo: | Several artisanal fisheries target deep species. These stocks are highly sensitive to overfishing because of their slow growth and late maturation. This vulnerability is higher if species concentrate during spawning season in coastal areas, as occur with scabbardfish (Aphanopus spp.). We herein explore if two Aphanopus species (A. carbo and A. intermedius) that coexist show migration patterns to coastal areas during spawning. We analysed specimens of both species throughout 4 years (2014-2017) in a weekly basis and compare morphological parameters to the distance of the coast [coastal (< 12 nm) vs. offshore (> 12 nm)]. Both species showed coastal patterns of migration during the spawning season (October-December), with 65.90% of total specimens of A. carbo and 51.60% of A. intermedius being caught at < 12 nm during this season. Fishing events were also more numerous at < 12 nm to the coast during spawning season (46.6%) relative to non-spawning season (32.6%). A series of management measures, e.g. October 46 December season, were developed to preserve Aphanopus stocks in the NE Atlantic Ocean. |
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Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around MadeiraSmall-scale fisheriesDeep seaReproductiveAphanopusAtlantic OceanMadeira (Portugal).Faculdade de Ciências da VidaSeveral artisanal fisheries target deep species. These stocks are highly sensitive to overfishing because of their slow growth and late maturation. This vulnerability is higher if species concentrate during spawning season in coastal areas, as occur with scabbardfish (Aphanopus spp.). We herein explore if two Aphanopus species (A. carbo and A. intermedius) that coexist show migration patterns to coastal areas during spawning. We analysed specimens of both species throughout 4 years (2014-2017) in a weekly basis and compare morphological parameters to the distance of the coast [coastal (< 12 nm) vs. offshore (> 12 nm)]. Both species showed coastal patterns of migration during the spawning season (October-December), with 65.90% of total specimens of A. carbo and 51.60% of A. intermedius being caught at < 12 nm during this season. Fishing events were also more numerous at < 12 nm to the coast during spawning season (46.6%) relative to non-spawning season (32.6%). A series of management measures, e.g. October 46 December season, were developed to preserve Aphanopus stocks in the NE Atlantic Ocean.Canadian Science PublishingDigitUMaVasconcelos, JoanaSousa, RicardoHenriques, PauloAmorim, AntonietaDelgado, JoãoRiera, Rodrigo2022-07-06T13:43:05Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.13/4371engVasconcelos, J., Sousa, R., Henriques, P., Amorim, A., Delgado, J., & Riera, R. (2020). Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira. Canadian Journal of Fisheries and Aquatic Sciences, 77(1), 124-131.10.1139/cjfas-2018-0423info: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:RCAAP2022-11-27T03:31:45Zoai:digituma.uma.pt:10400.13/4371Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:08:24.238858Repositório 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 |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
title |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
spellingShingle |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira Vasconcelos, Joana Small-scale fisheries Deep sea Reproductive Aphanopus Atlantic Ocean Madeira (Portugal) . Faculdade de Ciências da Vida |
title_short |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
title_full |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
title_fullStr |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
title_full_unstemmed |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
title_sort |
Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira |
author |
Vasconcelos, Joana |
author_facet |
Vasconcelos, Joana Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo |
author_role |
author |
author2 |
Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
DigitUMa |
dc.contributor.author.fl_str_mv |
Vasconcelos, Joana Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo |
dc.subject.por.fl_str_mv |
Small-scale fisheries Deep sea Reproductive Aphanopus Atlantic Ocean Madeira (Portugal) . Faculdade de Ciências da Vida |
topic |
Small-scale fisheries Deep sea Reproductive Aphanopus Atlantic Ocean Madeira (Portugal) . Faculdade de Ciências da Vida |
description |
Several artisanal fisheries target deep species. These stocks are highly sensitive to overfishing because of their slow growth and late maturation. This vulnerability is higher if species concentrate during spawning season in coastal areas, as occur with scabbardfish (Aphanopus spp.). We herein explore if two Aphanopus species (A. carbo and A. intermedius) that coexist show migration patterns to coastal areas during spawning. We analysed specimens of both species throughout 4 years (2014-2017) in a weekly basis and compare morphological parameters to the distance of the coast [coastal (< 12 nm) vs. offshore (> 12 nm)]. Both species showed coastal patterns of migration during the spawning season (October-December), with 65.90% of total specimens of A. carbo and 51.60% of A. intermedius being caught at < 12 nm during this season. Fishing events were also more numerous at < 12 nm to the coast during spawning season (46.6%) relative to non-spawning season (32.6%). A series of management measures, e.g. October 46 December season, were developed to preserve Aphanopus stocks in the NE Atlantic Ocean. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z 2022-07-06T13:43:05Z |
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://hdl.handle.net/10400.13/4371 |
url |
http://hdl.handle.net/10400.13/4371 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Vasconcelos, J., Sousa, R., Henriques, P., Amorim, A., Delgado, J., & Riera, R. (2020). Two sympatric, not externally discernible, and heavily exploited deepwater species with coastal migration during spawning season: implications for sustainable stocks management of Aphanopus carbo and Aphanopus intermedius around Madeira. Canadian Journal of Fisheries and Aquatic Sciences, 77(1), 124-131. 10.1139/cjfas-2018-0423 |
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.publisher.none.fl_str_mv |
Canadian Science Publishing |
publisher.none.fl_str_mv |
Canadian Science Publishing |
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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1799129952804667392 |