• Abstract

    CATCH, EFFORT AND CPUE OF SWORDFISH (XIPHIAS GLADIUS) LANDED IN SANTA CATARINA STATE IN 2000 AND 2001

    Published date: 12/11/2010
    Fishing effort and catch of swordfish (Xiphias gladius) landed by long-line fleet in Santa Catarina state during 2000 and 2001 were the subject of this study. These data was derived from a sampling program implemented in 2000, aiming the collection of information on the swordfish fishery and of useful information to support ICCAT management decisions. The fleet concentrated fishing effort in the area between 25º-40ºS/40º-55ºW. However, there were some boats fishing close to the Vitória-Trindade archipelago, the Rio Grande rise, and the Malvinas Island. In general, high catches were usually observed in the area between 30º-35ºS/45º-50ºW. Elevated CPUEs (kg/day fishing with 1000 hooks) occurred mostly in oceanic regions (seldom explored by the fleet). However, in the 3rd and 4th quarters, coastal waters also seem to be productive. Beside swordfish, the main species caught by the long-liners were: bigeye tuna (Thunnus obesus), albacore (T. alalunga), yellowfin tuna (T. albacares), and the blue shark (Prionace glauca). There was a predominance of blue shark in all quarters, especially in 1st (82%). Swordfish was the 2nd most important species in the landings, increasing its contribution from the 1st (around 12%) to the 4th quarter (around 22%). This increase in the swordfish landings was caused in part by trends in swordfish increasing catches and CPUEs, but also by the decrease of blue shark catches.

Brazilian Journal of Aquatic Science and Technology

Environmental Sciences, Aquatic and Coastal Environments.

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