Preliminary Trials on the Effect of Lighting for the Population Growth of the Rotifer, Brachionus plicatilis

• YOSHIMATSU Takao

  Aquaculture Systems Division, National Research Institute of Aquaculture, Fisheries Research Agency

• HIGUCHI Takahiro

  Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University

• HAMASAKI Yuji

  School of Humanity-Oriented Science and Engineering, Kinki University

• TANAKA Kenji

  School of Humanity-Oriented Science and Engineering, Kinki University

書誌事項

タイトル別名

• Preliminary Trials on the Effect of Lighting for the Population Growth of the Rotifer, <I>Brachionus plicatilis</I>

抄録

The effect of lighting to rotifer culture water was investigated preliminarily using freshwater Chlorella as food in terms of vitamin B₁₂ (VB₁₂) production. The marine rotifer Brachionus plicatilis was batchcultured for five days at 25°C in 25 psu seawater with or without lighting (L:D = 13:11 and L:D = 0:24). Rotifers were fed VB₁₂-enriched or VB₁₂-free Chlorella vulgaris with or without cobalt compound supplementation (cobalt (II) sulfate heptahydrate: CoSO₄•7H₂O). When VB₁₂-enriched Chlorella was fed, rotifer with lighting showed better population growth than in complete dark. On the other hand, no difference was observed in the population growth between light and dark groups when VB₁₂-free Chlorella was used. Nevertheless if the cobalt compound was supplemented to VB₁₂-free Chlorella, the light group showed higher population growth than non-supplemented groups and dark groups, and a much higher amount of VB₁₂ was detected from the tanks than those from other groups. In addition to that, even in the group fed VB₁₂-free Chlorella without Co supplementation a daily increase of a small amount of VB₁₂ was observed when they were lit up. From these experimental results, we can conclude that lighting plays an important role for the population growth of rotifers and Co compound supplementation to rotifer culture water promotes the reproduction performance of rotifers due to the enhanced production of VB₁₂ by lighting.

収録刊行物

• Japan Agricultural Research Quarterly: JARQ

  Japan Agricultural Research Quarterly: JARQ 42 (2), 131-136, 2008

  国立研究開発法人　国際農林水産業研究センター

キーワード

• cobalt compound
• culture
• larviculture
• light
• vitamin B<SUB>12</SUB>

詳細情報

• CRID: 1390001204701798784
• NII論文ID: 130003377725
• DOI: 10.6090/jarq.42.131
• ISSN: 21858896
• ISSN: 00213551
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可