Determination of a method for calculation of allometric condition factor of fish
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Data
2002-12-01
Autores
Lima-Junior, Sidnei Eduardo [UNESP]
Cardone, Isabella Braz [UNESP]
Goitein, Roberto [UNESP]
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Resumo
There is no agreement among authors that study fish condition by the allometric method (K=W/Lb) with regard to the best procedure for b coefficient calculation. Some authors use a constant coefficient for all sub-samples (seasons of the year, for instance), whilst others calculate b value for each sub-sample. To demonstrate which of these methods fits better, this study verified that the use of one b value for each sub-sample leads to distortion of Condition Factor values. Comparing the two tested methods, it may be concluded that the method which calculates b coefficient from groupings of all individuals and uses b as a constant value for all sub-samples is the most convenient method to study fish condition.
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Palavras-chave
Condition factor, Condition index, Hypostomus strigaticeps, Length-weight relationship, Methods, allometry, body height, controlled study, correlation coefficient, fish, intermethod comparison, measurement, morphometrics, nonhuman, sample, technique, weight, zoology, Hypostomus
Como citar
Acta Scientiarum - Biological and Health Sciences, v. 24, n. 2, p. 397-400, 2002.