Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea
The pelagic stingray Pteroplatytrygon violacea is known to be a frequent by-catch in longline fisheries worldwide. This study analysed the eco-geographic, technical and temporal parameters that affect pelagic stingray by-catch by the Spanish surface drifting longline fleet that operates in the Medit...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Cambridge University Press (CUP)
2015
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Online Access: | http://dx.doi.org/10.1017/s0025315415001253 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315415001253 |
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crcambridgeupr:10.1017/s0025315415001253 2024-05-19T07:45:06+00:00 Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea Báez, José C. Crespo, Guillermo Ortuño García-Barcelona, Salvador Ortiz De Urbina, José M. Macías, David 2015 http://dx.doi.org/10.1017/s0025315415001253 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315415001253 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Journal of the Marine Biological Association of the United Kingdom volume 96, issue 7, page 1387-1394 ISSN 0025-3154 1469-7769 journal-article 2015 crcambridgeupr https://doi.org/10.1017/s0025315415001253 2024-05-02T06:51:05Z The pelagic stingray Pteroplatytrygon violacea is known to be a frequent by-catch in longline fisheries worldwide. This study analysed the eco-geographic, technical and temporal parameters that affect pelagic stingray by-catch by the Spanish surface drifting longline fleet that operates in the Mediterranean Sea. Between 2000 and 2013, 3007 longline fishing operations were monitored. Over this period, we recorded 57 574 pelagic stingray by-catches by this fleet. Two gear types were involved in 96.05% of the pelagic stingray by-catch observed: traditional surface longliners targeting swordfish (LLHB) and surface drifting longliners targeting albacore (LLALB). We obtained two statistically significant explanatory models for the two types of gear. In both cases, two of the most important variables were fisheries being sited over the continental shelf and fishing during the summer season. The LLHB explanatory model included the following variables: number of hooks, latitude where setting started, distance between the ends of the longline, and the spring season. Regarding the LLHB, we found an association between the Capture per Unit Effort of pelagic stingray from favourable sets per year and the North Atlantic Oscillation in the previous year. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Cambridge University Press Journal of the Marine Biological Association of the United Kingdom 96 7 1387 1394 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
The pelagic stingray Pteroplatytrygon violacea is known to be a frequent by-catch in longline fisheries worldwide. This study analysed the eco-geographic, technical and temporal parameters that affect pelagic stingray by-catch by the Spanish surface drifting longline fleet that operates in the Mediterranean Sea. Between 2000 and 2013, 3007 longline fishing operations were monitored. Over this period, we recorded 57 574 pelagic stingray by-catches by this fleet. Two gear types were involved in 96.05% of the pelagic stingray by-catch observed: traditional surface longliners targeting swordfish (LLHB) and surface drifting longliners targeting albacore (LLALB). We obtained two statistically significant explanatory models for the two types of gear. In both cases, two of the most important variables were fisheries being sited over the continental shelf and fishing during the summer season. The LLHB explanatory model included the following variables: number of hooks, latitude where setting started, distance between the ends of the longline, and the spring season. Regarding the LLHB, we found an association between the Capture per Unit Effort of pelagic stingray from favourable sets per year and the North Atlantic Oscillation in the previous year. |
format |
Article in Journal/Newspaper |
author |
Báez, José C. Crespo, Guillermo Ortuño García-Barcelona, Salvador Ortiz De Urbina, José M. Macías, David |
spellingShingle |
Báez, José C. Crespo, Guillermo Ortuño García-Barcelona, Salvador Ortiz De Urbina, José M. Macías, David Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
author_facet |
Báez, José C. Crespo, Guillermo Ortuño García-Barcelona, Salvador Ortiz De Urbina, José M. Macías, David |
author_sort |
Báez, José C. |
title |
Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
title_short |
Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
title_full |
Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
title_fullStr |
Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
title_full_unstemmed |
Understanding pelagic stingray ( Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea |
title_sort |
understanding pelagic stingray ( pteroplatytrygon violacea) by-catch by spanish longliners in the mediterranean sea |
publisher |
Cambridge University Press (CUP) |
publishDate |
2015 |
url |
http://dx.doi.org/10.1017/s0025315415001253 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0025315415001253 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Journal of the Marine Biological Association of the United Kingdom volume 96, issue 7, page 1387-1394 ISSN 0025-3154 1469-7769 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0025315415001253 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
96 |
container_issue |
7 |
container_start_page |
1387 |
op_container_end_page |
1394 |
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1799485038850473984 |