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The estimation of food consumption in larval and juvenile fish: experimental evaluation of bioenergetics models
Author(s) -
Karjalainen J.,
Miserque D.,
Huuskonen H.
Publication year - 1997
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1997.tb06092.x
Subject(s) - rutilus , perch , bioenergetics , biology , coregonus , smelt , juvenile , fishery , food consumption , fish <actinopterygii> , larva , ecology , zoology , mitochondrion , microbiology and biotechnology , agricultural economics , economics
The two most commonly used methods for estimating the food consumption of fish are based on either the evacuation rate of food or the energy budget of an individual fish. In this study, both of those methods were used to estimate the food consumption of fish under experimental conditions. Bioenergetics models of vendace Coregonus albula , smelt Osmerus eperlanus , roach Rutilus rutilus and perch Perca fluviatilis were reconstructed based on experimental data and published values. The precision of the bioenergetics estimates for food consumption was evaluated under experimental conditions. The modelling efficiency (EF) of the bioenergetics model was 0.90, 0.97 and 0.93 for coregonids, roach and perch, respectively, which indicated good agreement between observed and predicted values. Under our experimental conditions, the bioenergetics model estimated food consumption better than the evacuation rate model.