| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
Annual catch of Hamaguri clam Meretrix lusori is greatly decreasing in many fishing grounds of Japan. In this study, the habitat condition, life history and population dynamics were compared between two fishing grounds, Kafuri and Shirakawa, based on monthly and quantitative sampling of 2009-2011. In Kafuri, the strict resource management of Hamaguri clams is in effect, but in Shirakawa, Hamaguri clams are decreasing because of overfishing. The practical method on resource management was developed.
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