Calculation the von Bertalanffy growth equations, based on the use of the applied computer programs for the Black Sea sprat and anchovy
Abstract
The method of compose the von Bertalanffy growth equation, based on the use of the regression of experimental data by an function of exponential rise to maximum, available in applied computer programs is proposed. The developed method of simplicity of practical application is characterized and can be used in the absence of regular observations. For the Black Sea sprat and anchovy, living on the western shelf of the Crimea, the equations of growth in length of von Bertalanffy has been compiled according to the developed method, and also the errors in determining the parameters of the equation due to the errors in measuring the length of fish have been estimated. The age of the fish for which the developed equations are applicable is defined. The averaged curves for the growth of the Black Sea sprat and anchovy are given, and also the limits in which the deviations in the length of individuals due to seasonal and individual characteristics of biological development are found with a probability of 95%. On the basis of the obtained growth equations, the average monthly increase in the length of sprat and anchovy for different age groups is calculated. The obtained results can be used in ichthyological studies, as well as in the fishing industry in calculating the growth rates of commercial fish stocks and calculating production characteristics.
About the Author
E. B. Mel’nikova
Institute of Natural and Technical Systems (FSBSI «INTS»)
Russian Federation
Russian Federation
Sevastopol
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Review
For citations:
Mel’nikova E.B. Calculation the von Bertalanffy growth equations, based on the use of the applied computer programs for the Black Sea sprat and anchovy. Trudy VNIRO. 2018;170:47-54. (In Russ.)
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