Diel variation of the RNA/DNA ratios in Crassostrea angulata (Lamarck) and Ruditapes decussatus (Linnaeus 1758) (Mollusca: Bivalvia)

被引：34

作者：

Chícharo, LMZ ^{[1
]}

Chícharo, MA ^{[1
]}

Alves, F ^{[1
]}

Amaral, A ^{[1
]}

Pereira, A ^{[1
]}

Regala, J ^{[1
]}

机构：

[1] Univ Algarve, CCMAR, FCMA, P-8000 Faro, Portugal

来源：

JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY | 2001年 / 259卷 / 01期

关键词：

RNA/DNA ratios; Diel variation; bivalves; Crassostrea angulata; Ruditapes decussatus;

D O I：

10.1016/S0022-0981(01)00229-5

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

The aim of this study was to investigate the effect of time of day on RNA/DNA ratios among fed and starved Crassostrea angulata and Ruditapes decussatus juveniles. Sampling to investigate the day and night condition of juveniles was carried out for 48 h. A highly sensitive method for nucleic acid quantification was applied to bivalves. The results suggest that there is some variation in nucleic acid quantities with the time of the clay. For the two species analysed, the RNA/DNA ratio was particularly high during the night and was higher in the fed animals. The results seem to indicate that there is some endogenous rhythm in the production of RNA. If there are diel changes in RNA/DNA ratios, it follows that average RNA/DNA ratios can be unrepresentative if there is any day or night bias in sampling. (C) 2001 Published by Elsevier Science B.V.

引用

页码：121 / 129

页数：9

共 32 条

[1] Evaluation of live microalgal diets for the seed culture of Ruditapes decussatus using physiological and biochemical parameters [J].