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Understanding pelagic stingray (Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea

dc.contributor.authorBáez J.C.
dc.contributor.authorCrespo G.O.
dc.contributor.authorGarcía-Barcelona S.
dc.contributor.authorOrtiz De Urbina J.M.
dc.contributor.authorMacías D.
dc.date.accessioned2020-09-02T22:13:39Z
dc.date.available2020-09-02T22:13:39Z
dc.date.issued2016
dc.identifier10.1017/S0025315415001253
dc.identifier.citation96, 7, 1387-1394
dc.identifier.issn00253154
dc.identifier.urihttps://hdl.handle.net/20.500.12728/3827
dc.descriptionThe 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. © Marine Biological Association of the United Kingdom 2015.
dc.language.isoen
dc.publisherCambridge University Press
dc.subjectBy-catch
dc.subjectlongline
dc.subjectpelagic stingray
dc.subjectPteroplatytrygon violacea
dc.subjectbycatch
dc.subjectcatch per unit effort
dc.subjectcontinental shelf
dc.subjectlonglining
dc.subjectNorth Atlantic Oscillation
dc.subjectpelagic fish
dc.subjectseasonal variation
dc.subjectAtlantic Ocean
dc.subjectAtlantic Ocean (North)
dc.subjectMediterranean Sea
dc.subjectPteroplatytrygon violacea
dc.subjectThunnus alalunga
dc.subjectXiphias gladius
dc.titleUnderstanding pelagic stingray (Pteroplatytrygon violacea) by-catch by Spanish longliners in the Mediterranean Sea
dc.typeArticle


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