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Heart rate as an indicator of activity, metabolic rate, food intake and digestion in pike, Esox lucius
Author(s) -
Armstrong J. D.
Publication year - 1986
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.1095-8649.1986.tb05012.x
Subject(s) - esox , pike , biology , heart rate , specific dynamic action , metabolic rate , zoology , fish <actinopterygii> , medicine , fishery , endocrinology , blood pressure
For pike in the laboratory, the relationship between heart rate (f H ) and oxygen consumption ( VO 2 , mg h −1 standardized to a 500‐g fish weight) can be described by a significant linear regression valid for heart rates below 55 beats min −1 . Heart rate increases during activity and feeding, accurately reflecting fluctuations in metabolic rate; so it can be used as a measure of metabolic rate in the field, using heart beat telemetry techniques. Post‐prandial heart rates are elevated, and closely correlated with the calorific value of the food taken in the preceding meal. Meal size can be estimated from the heart rate record with an error of less than 10%.