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Contribución al estudio biológico de la tintorera (prionace glauca) capturada accidentalmente en la pesquería de palangre de superficie de pez espada en el mediterráneo occidental OceanDocs
de la Serna, J.M.; Valeiras, J..
(Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5.
Tipo: Report Palavras-chave: Swordfish fishery; Mediterranean; Blue shark; By-catch; Prionace glauca; Shark fisheries.
Ano: 2003 URL: http://hdl.handle.net/1834/790
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Contribución al estudio biológico de la tintorera (prionace glauca) capturada accidentalmente en la pesquería de palangre de superficie de pez espada en el mediterráneo occidental OceanDocs
de la Serna, J.M.; Valeiras, J..
(Contribution to the biological study of blue shark (Prionace glauca) incidental catch by the Spanish surface longline fisheries for swordfish in the western Mediterranean). Blue shark (Prionace glauca) bycatches in the Spanish surface longline fisheries in the Mediterranean targeting swordfish (Xiphias gladius) from 1999 to 2001 represented 2% of the total catch. Information from onboard observers during 861 fishing sets in 26 longliners indicated that the highest catches were made in area 4-35000 (Alboran Sea) which represents 75.6% of the total observed catch of blue shark. The observed CPUE are from 5.5 to 34.1 kg/1000 hooks. Mean size at capture (LJFL) was 141.6 cm (SD=35.88). The proportion of females from the total was 0.5.
Tipo: Report Palavras-chave: Swordfish fishery; Blue shark; By-catch; Mediterranean; Prionace glauca; Shark fisheries; Sharks.
Ano: 2003 URL: http://hdl.handle.net/1834/790
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Mitochondrial Genetic Characterization Of Bluefin Tuna (Thunnus Thynnus) From Three Mediterranean (Libya, Malta, Tunisia); And One Atlantic Locations (Gulf Of Cadiz). OceanDocs
Farrugia, A.F.; Pla, C.; Viñas, J.; Tawil, M.Y.; Hattour, A.; de la Serna, J.M..
None of the previous genetic analysis found significant differences within the Mediterranean. However, a more exhaustive analysis is needed inside this sea. In this sense, we have analyzed the mitochondrial control region sequence variability of three Mediterranean locations: Libya (n = 22), Tunisia (n = 23) and Malta (n = 12). Additionally a sample from the Gulf of Cadiz (n = 24) in the East Atlantic Ocean was also included in the study. The AMOVA analysis revealed slightly (Fst = 0.013) but significative genetic differences (P < 0.000) for the Malta location, probably due to its small sample size (n = 12). In the other hand, when this location is removed from the analysis, no differences where found among the three remaining location (Fst = 0,005; P =...
Tipo: Journal Contribution Palavras-chave: Atlantic ocean; Mitochondrial DNA; Bluefin tuna; Sequencing; Genetic characterization; Mediterranean sea; Tuna fisheries.
Ano: 2003 URL: http://hdl.handle.net/1834/792
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