Laboratory Evaluation of a Bioenergetics Model for Largemouth Bass at Two Temperatures and Feeding Levels
- 1 November 1997
- journal article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 126 (6) , 1030-1035
- https://doi.org/10.1577/1548-8659(1997)126<1030:leoabm>2.3.co;2
Abstract
We evaluated a bioenergetics model for adult largemouth bass Micropterus salmoides at two temperatures (22°C and 27°C) and two feeding levels (ad libitum and 2% wet body mass) in the laboratory. Three statistical methods were used to assess agreement between predicted and observed growth and consumption during a 9-week period. Multivariate profile analysis indicated no significant deviations between predicted and observed mean body masses at the end of each week of the experiment; partitioning mean square error revealed that 87% of the variance was attributed to random variation rather than to systematic variation; and a reliablility index indicated agreement between predicted and observed masses within a factor of 1.03. Predicted cumulative food consumption during the 9-week period was 9.4% less than that observed. Model predictions of mean daily consumption rates closely tracked observed values when fish were not fed to excess, but the model did not perform as well under ad libitum feeding cond...Keywords
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