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
Several artisanal fisheries target deepwater 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.). In this p...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0423 |
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crcansciencepubl:10.1139/cjfas-2018-0423 2023-12-17T10:47:22+01:00 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 Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo 2020 http://dx.doi.org/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0423 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 1, page 124-131 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2020 crcansciencepubl https://doi.org/10.1139/cjfas-2018-0423 2023-11-19T13:39:12Z Several artisanal fisheries target deepwater 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.). In this paper, we 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 with the distance of the coast (coastal (<12 n.m.; 1 n.m. = 1.852 km) versus offshore (>12 n.m.)). 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 n.m. during this season. Fishing events were also more numerous at <12 n.m. to the coast during spawning season (46.6%) relative to nonspawning season (32.6%). A series of management measures (e.g., October–December season) were developed to preserve Aphanopus stocks in the Northeast Atlantic Ocean. Article in Journal/Newspaper Northeast Atlantic Canadian Science Publishing (via Crossref) Canadian Journal of Fisheries and Aquatic Sciences 77 1 124 131 |
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Open Polar |
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Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Vasconcelos, Joana Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo 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 |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Several artisanal fisheries target deepwater 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.). In this paper, we 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 with the distance of the coast (coastal (<12 n.m.; 1 n.m. = 1.852 km) versus offshore (>12 n.m.)). 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 n.m. during this season. Fishing events were also more numerous at <12 n.m. to the coast during spawning season (46.6%) relative to nonspawning season (32.6%). A series of management measures (e.g., October–December season) were developed to preserve Aphanopus stocks in the Northeast Atlantic Ocean. |
format |
Article in Journal/Newspaper |
author |
Vasconcelos, Joana Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo |
author_facet |
Vasconcelos, Joana Sousa, Ricardo Henriques, Paulo Amorim, Antonieta Delgado, João Riera, Rodrigo |
author_sort |
Vasconcelos, Joana |
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 |
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 |
publisher |
Canadian Science Publishing |
publishDate |
2020 |
url |
http://dx.doi.org/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjfas-2018-0423 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjfas-2018-0423 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 77, issue 1, page 124-131 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjfas-2018-0423 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
77 |
container_issue |
1 |
container_start_page |
124 |
op_container_end_page |
131 |
_version_ |
1785571199964676096 |