Portuguese commercial fisheries of swordfish, Xiphias gladius
Swordfish has an important role in Portuguese fisheries. Portuguese commercial swordfish landings were analyzed from 1986 to 2012. Commercial landings of five incidental catches of pelagic sharks (Alopias superciliosus, Alopias vulpinus, Isurus oxyrinchus, Prionace glauca and Sphryna zygaena) were a...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-05-01
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| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/Journal/10.3389/conf.fmars.2014.02.00133/full |
| _version_ | 1811193416775630848 |
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| author | André Roxo Nunes |
| author_facet | André Roxo Nunes |
| author_sort | André Roxo Nunes |
| collection | DOAJ |
| description | Swordfish has an important role in Portuguese fisheries. Portuguese commercial swordfish landings were analyzed from 1986 to 2012. Commercial landings of five incidental catches of pelagic sharks (Alopias superciliosus, Alopias vulpinus, Isurus oxyrinchus, Prionace glauca and Sphryna zygaena) were also evaluated for the same period. A total of 3.653 landings of swordfish (12.625 t) were observed in 62 ports. Annual landings for the fishery generally decreased over time, with a corresponding increase in price per kilogram. The most fished shark was blue shark with 12.715 t in 48 ports. It was followed by shortfin mako, thresher, smooth hammerhead and bigeye thresher (with 5.113 t, 672 t, 19 t and 0,45 t, respectively). The lowest landings of swordfish were observed in the first semester of each years while catch levels of blue sharks were high. Shortfin mako catches raised only since 2005. The remaining species studies always displayed lower landings, suggesting that most of them are bycaught. |
| first_indexed | 2024-04-12T00:09:17Z |
| format | Article |
| id | doaj.art-4333b552b2b24f46af8ff98897e46fdd |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-12T00:09:17Z |
| publishDate | 2014-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-4333b552b2b24f46af8ff98897e46fdd2022-12-22T03:56:01ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452014-05-01110.3389/conf.fmars.2014.02.00133100167Portuguese commercial fisheries of swordfish, Xiphias gladiusAndré Roxo Nunes0Escola Superior de Turismo e Tecnologia do MarSwordfish has an important role in Portuguese fisheries. Portuguese commercial swordfish landings were analyzed from 1986 to 2012. Commercial landings of five incidental catches of pelagic sharks (Alopias superciliosus, Alopias vulpinus, Isurus oxyrinchus, Prionace glauca and Sphryna zygaena) were also evaluated for the same period. A total of 3.653 landings of swordfish (12.625 t) were observed in 62 ports. Annual landings for the fishery generally decreased over time, with a corresponding increase in price per kilogram. The most fished shark was blue shark with 12.715 t in 48 ports. It was followed by shortfin mako, thresher, smooth hammerhead and bigeye thresher (with 5.113 t, 672 t, 19 t and 0,45 t, respectively). The lowest landings of swordfish were observed in the first semester of each years while catch levels of blue sharks were high. Shortfin mako catches raised only since 2005. The remaining species studies always displayed lower landings, suggesting that most of them are bycaught.http://journal.frontiersin.org/Journal/10.3389/conf.fmars.2014.02.00133/fullFisheriesManagementbycatchswordfishlandings |
| spellingShingle | André Roxo Nunes Portuguese commercial fisheries of swordfish, Xiphias gladius Frontiers in Marine Science Fisheries Management bycatch swordfish landings |
| title | Portuguese commercial fisheries of swordfish, Xiphias gladius |
| title_full | Portuguese commercial fisheries of swordfish, Xiphias gladius |
| title_fullStr | Portuguese commercial fisheries of swordfish, Xiphias gladius |
| title_full_unstemmed | Portuguese commercial fisheries of swordfish, Xiphias gladius |
| title_short | Portuguese commercial fisheries of swordfish, Xiphias gladius |
| title_sort | portuguese commercial fisheries of swordfish xiphias gladius |
| topic | Fisheries Management bycatch swordfish landings |
| url | http://journal.frontiersin.org/Journal/10.3389/conf.fmars.2014.02.00133/full |
| work_keys_str_mv | AT andreroxonunes portuguesecommercialfisheriesofswordfishxiphiasgladius |