Growth of the golden catfish Brachyplatystoma rousseauxii in the Middle Orinoco region of Venezuela according to multiple model inference
Traditionally, the von Bertalanffy model has been used as the only standard in the study of fish growth, considering it a priori as the only model that fits the length-age data of the species; a consideration that generates uncertainties in the values of the growth parameters that are estimated, since it is known that there are other growth models that could also fit the length-age data. In this sense, in the Middle Orinoco region a study of Brachyplatystoma rousseauxii growth was previously done (González et al., 2015) using the traditional von Bertalanffy model, and the results were subsequently used to evaluate the population (González et al.., 2017); having as objective the present work to validate the results of González et al., (2015), fitting the same length-age data of the previous work to the growth models of the U Richards family, in order to select the one with the best fit using the Akaike Information Criterion (AIC). As demonstrated by Gonzalez et al., (2015) the traditional von Bertalanffy model fitted the back-calculated length-age data, but only 35.4 %; while the majority (64.6 %) fitted the U von Bertalanffy, U Logistic and U Gompertz models, with no superiority of any of them in the fit.The growth parameters estimated from an average model were somewhat different from those obtained in the previous work, and therefore it is necessary to re-evaluate the resource to really know its level of exploitation in the middle Orinoco in Venezuela.
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| Format: | Digital revista |
| Language: | spa |
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Universidad del Cauca -Facultad de ciencias Agrarias
2022
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| Online Access: | https://revistas.unicauca.edu.co/index.php/biotecnologia/article/view/2030 |
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