Estimating the Energy Budgets of Actively Predatory Fishes

Where estimates of surplus energy accumulation are available, bioenergetic analysis of fish in nature requires estimates of the associated ration or metabolic levels. The estimation procedure described here is based upon direct coupling of ration intake with the activity metabolism subcomponent of t...

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Bibliographic Details
Published in:Canadian Journal of Fisheries and Aquatic Sciences
Main Author: Kerr, S. R.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1982
Subjects:
Online Access:http://dx.doi.org/10.1139/f82-054
http://www.nrcresearchpress.com/doi/pdf/10.1139/f82-054
Description
Summary:Where estimates of surplus energy accumulation are available, bioenergetic analysis of fish in nature requires estimates of the associated ration or metabolic levels. The estimation procedure described here is based upon direct coupling of ration intake with the activity metabolism subcomponent of total metabolism. Its primary advantage over other estimation procedures is in its simple, generalized handling of activity metabolism. Application of the method is illustrated for natural populations of cod, Gadus morhua, and haddock, Melanogrammus aeglefinus.Key words: bioenergetics, growth, metabolism, rations, cod, haddock