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Growth studies with fish—overcoming the problems of size variation
Author(s) -
Jobling M.
Publication year - 1983
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.1095-8649.1983.tb04735.x
Subject(s) - gadus , biology , fish <actinopterygii> , growth rate , fishery , atlantic cod , statistics , zoology , ecology , mathematics , geometry
The relationship between growth rate and fish size is described by the equation log e G w = a —0·4 log e W, where G w is the specific growth rate and W is fish weight. Since the intercept (a) represents the log e G w of a fish unit size, the relationship presents a method allowing comparison of data from experiments involving fish of different sizes. The application of the method is demonstrated by examining the effects of environmental temperature on growth rates of cod, Gadus morhua , and it is suggested that the optimum temperature for growth of cod is 13–15° C.