Multi-species larval fish growth model based on temperature and fluorometrically derived RNA/DNA ratios: results from a meta-analysis

Marine Ecology Progress Series

E. M. Caldarone¹  L. J. Buckley¹  C. Clemmesen¹ 

关键词: RNA/DNA ratio;    Growth;    Larvae;    Temperature effects;    Nucleic acids;    Fluorometric microplate assay;    Multi-species meta-analysis;   

DOI  :  10.3354/meps07648

学科分类：海洋学与技术

来源: Inter-Research

【 摘 要 】

ABSTRACT: Weight-specific growth rate (G) and growth performance (the fraction of maximum growth realized, G_pf) are key demographic characteristics. The ratio of RNA/DNA (RD) can provide information on both G and G_pf. Estimating G from RD in larval fish requires an adjustment for the activity of RNA at different temperatures. Based on a meta-analysis of published data, we present a general model for the relationship between G in marine fish larvae and fluorometrically derived RD and temperature (T), and suggest that this model can be used to estimate G in marine fish larvae. Several options for estimating G_pf are also considered, including the use of a reference growth rate (G_ref). RDs of well-fed larvae appeared to be independent of water temperatures between 4 and 28°C, suggesting that any increase in growth rate with temperature was accomplished by increased activity rather than increased concentrations of RNA. However, for the best-fit meta-analysis RD–T–G model, the relationship between RD and G_pf was temperature dependent for fish less than fully fed.

【 授权许可】

Unknown