Estimating the Energy Budgets of Actively Predatory Fishes

• 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: Aquatic Science; Ecology, Evolution, Behavior and Systematics; Gadus morhua
• Online Access: http://dx.doi.org/10.1139/f82-054; http://www.nrcresearchpress.com/doi/pdf/10.1139/f82-054

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