Open AccessDiel Variation in RNA/DNA Ratios of Japanese Flounder Paralichthys olivaceus
Author(s) -
Gwak WooSeok
Publication year - 2002
Publication title -
journal of the world aquaculture society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.655
H-Index - 60
eISSN - 1749-7345
pISSN - 0893-8849
DOI - 10.1111/j.1749-7345.2002.tb00030.x
Subject(s) - paralichthys , diel vertical migration , biology , olive flounder , flounder , fishery , zoology , fish <actinopterygii>
Laboratory‐reared Japanese flounder Paralichthys olivaceus larvae (11.2 ± 0.2 mm total length; age 26 d) 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, 2000 h) and significantly reduced at night (2300, 0200, 0500 h). Findings from this study indicate a diel variation in biochemical condition and suggest that special care should be taken in sampling design and data analysis to account for this source of variability.