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このアイテムの引用には次の識別子を使用してください: http://hdl.handle.net/10126/1213

タイトル: A Direction Towards Sustainable Fish Feeding Culture with Least Material Loading in Semi-enclosed Seas
著者: Huang, Ping-Yi
Okuda, Kazuo
Takahashi, Masayuki Mac
キーワード: fish feeding culture
enclosed inlet
material loading
filter feeder
Japanese littleneck clam
雑誌名: 黒潮圏科学
発行日: Feb-2009
出版者: 高知大学大学院総合人間自然科学研究科黒潮圏総合科学専攻黒潮圏科学編集委員会
抄録: Although a diversified supply of fish is now required to support the recent increase in fish demand, fish culture, which is the second largest source of supply for fisheries, is facing a serious eterioration of water quality due to material loading by fish feeding. Establishment of fish feeding culture with least material loading has been tried by recovering the loaded materials with the help of useful organisms in Uranouchi Inlet, Kochi Prefecture, in the present study. Loaded dissolved matter, 62 % of total feed, is expected to be absorbed directly by phytoplankton, and loaded particulate organic matter, 28 % of total feed, will also be absorbed by phytoplankton in epilimnion during the period of vertical water mixing after decomposition to inorganic nutrients in hypolimnion. Phytoplankton are then fed to a filter feeder, the Japanese littleneck clam, followed by harvesting 3rd year clams over 30 mm in shell length from autumn to the next spring in order to establish a zero-emission type of fish feeding culture by recovering the loaded materials. It is estimated that loaded materials by current fish culture can be removed by maintaining an individual (ind)density of 2nd year or older clam such as about 1,000 ind・m-2.
URI: http://hdl.handle.net/10126/1213
出現コレクション:01 黒潮圏科学=Kuroshio Science   1(2007)-


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