Correlates of growth in juvenile three-spined sticklebacks: potential predictors of growth rates in natural populations

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dc.contributor.author Ali, M.
dc.contributor.author Wootton, Robert J.
dc.date.accessioned 2010-03-08T15:15:25Z
dc.date.available 2010-03-08T15:15:25Z
dc.date.issued 2003-03
dc.identifier.citation Ali , M & Wootton , R J 2003 , ' Correlates of growth in juvenile three-spined sticklebacks: potential predictors of growth rates in natural populations ' Ecology of Freshwater Fish , vol 12 , no. 1 , pp. 87-92 . en
dc.identifier.issn 1600-0633
dc.identifier.other PURE: 138156
dc.identifier.other dspace: 2160/4191
dc.identifier.uri http://hdl.handle.net/2160/4191
dc.description Ali, M., Wootton, R. J. (2003). Correlates of growth in juvenile three-spined sticklebacks: potential predictors of growth rates in natural populations. Ecology of Freshwater Fish, 12, (1), 87-92. Sponsorship: Government of Pakistan en
dc.description.abstract The possibility of using indices to quantitatively predict short-term growth rates of juvenile three-spined sticklebacks (Gasterosteus aculeatus L.) was assessed. A range of weight-specific growth rates (GW) was obtained in experiments with individual sticklebacks fed enchtraeid worms at different daily rations over 21 days. There was a strong, positive correlation between GW and the RNA : DNA ratio in white muscle (r2 = 0.90) and lipid concentration (as percentage dry weight) of the carcass (r2 = 0.92). There were smaller, but significant correlations between GW and the percentage of dry matter in the carcass (r2 = 0.67), and the residuals from the weight–length relationship (r2 = 0.49). Regressions relating growth to RNA : DNA ratio and lipid concentration offer a means of estimating short-term growth rates in natural populations. A test of such predictions using the results from a 56-day experiment on stickleback growth suggested that predictions from percentage lipid were biased and inefficient, while predictions from the RNA : DNA ratio were unbiased but inefficient. Predictions from percentage lipid were higher than from the RNA : DNA ratio. en
dc.format.extent 6 en
dc.language.iso eng
dc.relation.ispartof Ecology of Freshwater Fish en
dc.subject stickleback en
dc.subject specific growth rate en
dc.subject RNA en
dc.subject DNA ratio en
dc.subject lipid en
dc.subject condition indices en
dc.subject predictive regressions en
dc.title Correlates of growth in juvenile three-spined sticklebacks: potential predictors of growth rates in natural populations en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1034/j.1600-0633.2003.00003.x
dc.contributor.institution Institute of Biological, Environmental and Rural Sciences en
dc.description.status Peer reviewed en


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