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Effect of body weight and temperature on the maximum daily food consumption of Gasterosteus aculeatus L. and Phoxinus phoxinus (L.): selecting an appropriate model
Author(s) -
Wootton R. J.,
Allen J. R. M.,
Cole S. J.
Publication year - 1980
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.1095-8649.1980.tb02803.x
Subject(s) - phoxinus , gasterosteus , minnow , biology , stickleback , body weight , fish <actinopterygii> , food consumption , water body , zoology , ecology , fishery , endocrinology , geotechnical engineering , agricultural economics , engineering , economics
The relationships between the maximum, daily food consumption, body weight and water temperature for the stickleback, Gasterosteus aculeatus L. , and the minnow, Phoxinus phoxinus (L.), were studied. The two species occupy the same lakes in mid‐Wales, but differ in that G. aculeatus has a true stomach whereas P. phoxinus lacks a true stomach. For both species, the relationship between food consumption (F) and body weight ( W ) could be described by the model: log e F=a + b log e W . The effect of temperature (T) could be incorporated in the form: log e f= a + b, log e W+b 2 log e T. These models were selected because they accounted for a high proportion of the variance in the dependent variable, and because an analysis of the residuals obtained after fitting a model showed no trends which would have signalled the inadequacy of the model.