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

Buckley, L.J., Caldarone, E.M. and Clemmesen, Catriona (2008) Multi-species larval fish growth model based on temperature and fluorometrically derived RNA/DNA ratios: results from a meta-analysis. Open Access Marine Ecology Progress Series, 371 . pp. 221-232. DOI 10.3354/meps07648.

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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.

Document Type: Article
Keywords: Ichthyology; RNA/DNA ratio; Growth; Larvae; Temperature effects; Nucleic acids; Fluorometric microplate assay; Multi-species meta-analysis
Research affiliation: OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.3354/meps07648
ISSN: 0171-8630
Projects: Future Ocean, GLOBEC
Date Deposited: 17 Nov 2009 09:53
Last Modified: 01 Jun 2018 08:27
URI: http://oceanrep.geomar.de/id/eprint/6958

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