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Circadian Variation of the RNA/DNA Ratios in Marbled Flounder Pleuronectes yokohamae  

Gwak, Woo-Seok (Department of Marine Biology and Aquaculture, The Institute of Marine Industry, Gyeongsang National University)
Publication Information
Korean Journal of Ichthyology / v.22, no.4, 2010 , pp. 267-272 More about this Journal
Abstract
Laboratory-reared marbled flounder (Pleuronectes yokohamae) juveniles ($23.2{\pm}0.2mm$ total length; age 89 day) were sampled over a 48-h period to determine any diel patterns in RNA/DNA ratios. RNA/DNA ratios were highest during daytime periods (0800, 1100, 1400, 1700 h) and significantly reduced at night (2000, 2300, 0200, 0500 h). Findings from this study indicate a diel variation in biochemical condition and suggest that special care should be taken in designing sampling plans, including sampling time and data analysis to account for this source of variability.
Keywords
Marbled flounder; Pleuronectes yokohamae; RNA/DNA ratios; circadian variation;
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