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- Title
Effect of light irradiation on dynamics of vitamin A compounds in rotifers and Artemia.
- Authors
Haga, Yutaka; Tarui, Fuminori; Ohta, Kengo; Shima, Yasuhiro; Takeuchi, Toshio
- Abstract
The dynamics of vitamin A (VA) compounds in live food during enrichment were examined under different light conditions. Rotifers Brachionus plicatilis and Artemia nauplii (Artemia) were enriched with or without 10 mg VA palmitate (VAp) in 1 L of culture medium for 24 h under either bright (2000 lx), or dark (<1 lx) conditions. VAp, retinol (ROH), retinal (RAL) and retinoic acid (RA) contents were analyzed at 0 h (before enrichment) and at 3, 6, 12, 18 and 24 h after the onset of enrichment. Retinoid content in rotifers enriched in darkness was always higher than that enriched under light. VAp content showed two peaks at 3 and 18 h in rotifers enriched in darkness, but it showed one peak at 3 h in rotifers enriched under light. ROH and RA contents increased over the 24-h period in rotifers enriched in darkness, whereas they decreased 12 h onward in rotifers enriched under light. In Artemia, VAp and ROH contents were always higher than when enriched under the bright condition, but their dynamics showed a similar pattern in Artemia enriched under dark and bright conditions.
- Subjects
VITAMIN A; TRETINOIN; CAROTENES; ARTEMIA; FAT-soluble vitamins; ROTIFERA; DERMATOLOGIC agents; FISHES; AQUATIC animals
- Publication
Fisheries Science, 2006, Vol 72, Issue 5, p1020
- ISSN
0919-9268
- Publication type
Article
- DOI
10.1111/j.1444-2906.2006.01251.x