浅海養魚場における栽培ワカメ，Ｕｎｄａｒｉａ　ｐｉｎｎａｔｉｆｉｄａの生長過程とＮ，Ｐ吸収速度

DOI 日本農学文献記事索引 Web Site 参考文献30件
  • 耒代 勇樹
    鹿児島大学大学院連合農学研究科海洋生産環境学講座
  • 門脇 秀策
    鹿児島大学水産学部資源育成科学講座

書誌事項

タイトル別名
  • The Growth Process and N, P Uptake Rates of Undaria pinnatifida Cultured in Coastal Fish Farms
  • センカイ ヨウギョジョウ ニ オケル サイバイ ワカメ Undaria pinnatifida ノ セイチョウ カテイ ト N P キュウシュウ ソクド

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抄録

Biological water purification by culturing Undaria pinnatifida in coastal fish farms was estimated as a function of dissolved inorganic nutrients, light intensity, and water temperature.U. pinnatifida was cultured from 1 m to 4 m depths in coastal fish farms from November, 2002 to May, 2003. The maximum growth rate and growth of blade length were recorded 4.2 cm/day in growth phase, reached to 182 cm in maturation phase at 2 m depth. Average contents of total nitrogen (N) and total phosphorus (P) in blade part of U. pinnatifida reached to 19 mg N/g dry and 2.3 mg P/g dry in all phase. The maximum N, P uptake rates by blade part of U. pinnatifida were 3.1 mg N/m2/day and 0.54 mg P/m2/day at 2 m depth. Michaelis-Menten's constants of N, P uptake rates were 17μg N/l and 6.2 μg P/l. Downward irradiance of 670μmol/m2/s resulted in the maximum N, P uptake rates. N, P uptake rates by blade part of U. pinnatifida at 16°C were 2.5 mg N/m2/day and 0.44 mg P/m2/day. Water temperature coefficients of N, P uptake rates were 1.090 and 1.081. The N and P uptake rates of cultured U. pinnatifida were formulated from dissolved inorganic nutrients, light intensity and water temperature characteristics found in coastal fish farms, and the calculated values corresponded well with the observed values.

収録刊行物

  • 水産増殖

    水産増殖 52 (4), 365-374, 2004

    日本水産増殖学会

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