2008•DIGITAL.CSIC (Spanish National Research Council (CSIC))Requires access
SCIENTIFIC ESTIMATES OF BYCATCH LANDED BY THE SPANISH SURFACE LONGLINE FLEET TARGETING SWORDFISH (Xiphias gladius) IN THE INDIAN OCEAN WITH SPECIAL REFERENCE TO THE 2004 - 2006 PERIOD.
A. Ramos‐Cartelle, B. García-Cortés, Jaime Mejuto
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Abstract
This paper presents scientific estimates of the bycatch species landed by the Spanish surface longline fleet \ntargeting swordfish (Xiphias gladius) in the Indian Ocean since the beginning of this fishery in 1993, as \nwell as an update for the recent period 2004- 2006. The species classified as bycatch amounted to 46.2% \nof the total weight landed. The three most prevalent species in the catch, Xiphias gladius, Prionace \nglauca and Isurus oxyrhinchus, represented 85.2% of the total weight landed during this last period. As \nfar as bycatch species are concerned, large pelagic sharks were the most prevalent group with 76.5% of \nthe bycatch in weight, whereas tunas amounted to 15.0%, billfish to 2.2% and other species to 6.3%. \nPrionace glauca and Isurus oxyrhinchus are the two most prevalent bycatch species in the group of large \npelagic sharks, reaching 84.4% and 12.0% of the landings of this group, respectively.