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MEPS
Marine Ecology Progress Series

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MEPS 371:221-232 (2008)  -  DOI: https://doi.org/10.3354/meps07648

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

L. J. Buckley1, E. M. Caldarone2,*, C. Clemmesen3

1University of Rhode Island/NOAA Cooperative Marine Education and Research Program, Graduate School of Oceanography, South Ferry Road, Narragansett, Rhode Island 02882, USA
2NOAA National Marine Fisheries Service, Narragansett Laboratory, 28 Tarzwell Drive, Narragansett, Rhode Island 02882, USA
3Leibniz Institute of Marine Sciences, IFM-GEOMAR, Düsternbrooker Weg 20, 24105 Kiel, Germany
*Corresponding author. Email:

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 (Gref). 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.


KEY WORDS: RNA/DNA ratio · Growth · Larvae · Temperature effects · Nucleic acids · Fluorometric microplate assay · Multi-species meta-analysis


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Cite this article as: Buckley LJ, Caldarone EM, Clemmesen C (2008) Multi-species larval fish growth model based on temperature and fluorometrically derived RNA/DNA ratios: results from a meta-analysis. Mar Ecol Prog Ser 371:221-232. https://doi.org/10.3354/meps07648

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