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Is peak postprandial oxygen consumption positively related to growth rate and resting oxygen consumption in a sedentary catfish Silurus meridionalis ?
Author(s) -
Fu S. J.,
Cao Z. D.,
Peng J. L.,
Wang Y. X.
Publication year - 2008
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.1095-8649.2008.01968.x
Subject(s) - postprandial , specific dynamic action , biology , catfish , meal , basal metabolic rate , vo2 max , oxygen , endocrinology , zoology , medicine , food science , insulin , fishery , fish <actinopterygii> , heart rate , chemistry , blood pressure , organic chemistry
The resting oxygen consumption , postprandial and post‐exercise peak oxygen consumption of 137 juvenile southern catfish Silurus meridionalis , weighing 18·5 ± 0·8 g (mean ± s . d .), were measured at 25° C to determine whether is positively related to postprandial and post‐exercise in sedentary S. meridionalis . In addition, postprandial metabolic response [ i.e. the specific dynamic action (SDA)] after a satiating meal and the growth performance as a consequence of a 3 week feeding‐growth trail were measured in 40 S. meridionalis , weighing 14·3 ± 0·2 g, at 25° C to determine whether postprandial is positively related to growth rate. Postprandial was positively correlated with , while post‐exercise was not. Both postprandial and post‐exercise were positively correlated with factorial and absolute scope. There was no significant correlation between the growth rate and postprandial in S. meridionalis . It suggested that as a sit‐and‐wait forager with low , low post‐exercise and high postprandial , the expenditure of energy for maintenance in S. meridionalis may be more closely related to digestive processes than locomotor activities.