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Swimming Behavior of Juvenile Yellowfin Tuna (Thunnus albacares) Around Fish Aggragate Devices (F.A.D.S) in the Philippines

  • Y. Mitsunaga
  • R. Babaran
  • C. Endo
  • K. Anraku
Conference paper

Abstract

Three juvenile yellowfin tuna (22–26 cm FL) were monitored around a payao (FAD: Fish Aggregating Device) in Panay Gulf, the Philippines. A receiver was attached to the anchor line of the payao, and ultrasonic transmitters were implanted into the abdominal cavities of the fish. Juvenile yellowfin tuna swam within a limited shallow range during nighttime and dived to deeper waters, maximum 105 m, during daytime, then moved away from the payao at midnight. One juvenile yellowfin tuna was recaptured 2 days after release by handline in the same payao, and two juvenile yellowfin tuna were recaptured 12 days after release by ringnet in another payao over 3 km away. These recaptures indicate that the fish were active enough to feed and swim, and also show the feasibility of undertaking telemetry studies on juvenile yellowfin tuna.

Keywords

Swimming Behavior Small Prey Yellowfin Tuna Detection Zone Tuna Species 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  1. 1.Faculty of Agriculture, Department of FisheriesKinki UniversityNaraJapan
  2. 2.College of Fisheries and Ocean SciencesUniversity of the Philippines in the VisayasMiagaoPhilippines
  3. 3.Faculty of FisheriesKagoshima UniversityKagoshimaJapan

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