淡水性渦鞭毛藻Peridinium bipes f. occultatumの走地性

• 岸本 直之

  京都大学大学院工学研究科

• 大西 庸介

  (株)関西総合環境センター技術開発部

• 宗宮 功

  京都大学大学院工学研究科

• 大西 正記

  関西電力(株)総合技術研究所環境技術研究センター

書誌事項

タイトル別名

• Geotaxis in the Freshwater Dinoflagellate Peridinium bipes f. occultatum.

抄録

The characteristics of taxis in Peridinium bipes were examined using an experimental tank and a coupled microscope-CCD camera system. The vegetative cells exhibited negative geotaxis, since they swam upward irrespective of upward or downward irradiance. This behavior appeared to be the main factor in controlling the vertical migration of this species. The negative geotaxis was inferred to be caused by the distance between the center of gravity and the geometric center of the cell. We also estimated the geotactic and phototactic vertical swimming velocity of P. bipes and simulated the vertical migration of a P. bipes community with a numerical model. The model accurately reproduced the observed vertical migration pattern of the P. bipes community at irradiances over the range of 0 to 80.5μmol quanta m^-2 sec^-1. This model, in combination with a hydrodynamic model and a water quality model, will play a useful role in elucidating the appearance of freshwater red tides caused by P. bipes.

収録刊行物

• 陸水学雑誌

  陸水学雑誌 60 (3), 299-317, 1999

  日本陸水学会

キーワード

• freshwater red tide
• Peridinium bipes
• phototaxis
• geotaxis

詳細情報

• CRID: 1390282679035265664
• NII論文ID: 10004593584
• NII書誌ID: AN0024866X
• DOI: 10.3739/rikusui.60.299
• ISSN: 18824897
• ISSN: 00215104
• NDL書誌ID: 4902875
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4902875
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可