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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25116

Title: Satellite tracking of three young whale sharks in the northwestern Pacific
Authors: Hsu H. H.;S. J. Joung;Y. Y. Liao;K. M. Liu
Contributors: NTOU:Institute of Marine Affairs and Resource Managemen
Keywords: Whale shark;Tagging;Satellite telemetry;Conservation;Taiwan;Northwestern pacific
Date: 2005
Issue Date: 2011-10-20T08:21:19Z
Publisher: International Whale Shark Conference
Abstract: Four juvenile whale sharks, Rhincodon typus were tagged using smart position and temperature transmitting (SPOT2) satellite tags (WildlifeComputers Ltd.) during 2002 and 2004. Transmissions from three males (4.0–4.5 m total length) were successfully received via the Argos satellitesystem. Two sharks tagged in April had similar routes after being released. They spent the most time in open sea suggesting that it is an importantperiod in the life history of juvenile whale shark in the Northwestern Pacific. In addition, they generally occupied areas where the water temperatureswere between 23 and 32 ◦C. Another shark tagged in November moved above the sea ridges in the first month after being released then migratedalong the eastern and northern coastal waters of Taiwan during winter. This shark stayed in the Kuroshio Current region where the water temperaturewas between 25 and 29 ◦C, then moved to the edge of the China Coastal Current region where the temperature was low (14–21 ◦C) and remainedthere. In the last 15 days of the tracking, the shark shifted to the coastal waters of Taiwan where the temperature was between 17 and 24 ◦C. Threeindividuals dive deep into waters where the temperature was 6 ◦C. The average swimming speed was between 28.3 and 34.6 km/day. They couldaccelerate to 11–13 km/h for a very short time period. Their movement patterns appeared to be related to boundary currents, which may bringabundant prey, and sharks stayed in waters with higher plankton densities for a longer time. These results provide important information on migratoryroutes of whale sharks in the Northwestern Pacific, and can be used as a reference for the conservation and management on the world’s largest fish.
URI: http://ntour.ntou.edu.tw/handle/987654321/25116
Appears in Collections:[海洋事務與資源管理研究所] 演講及研討會

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