Archive | 2019
Número de larvas de Oreochromis sp en dos proporciones reproductivas con dos sistemas de manejo
Abstract
The general objective was to evaluate the number of Oreochromis sp larvae considering the reproductive proportions 3:1 and 3:2 (Female:Males ratio) and the physicochemical parameters of water in two management systems (water exchange and artificial aeration), at the Centro Experimental Piscicola in San Jeronimo (Antioquia). The data were processed using the statistical package PAST © for descriptive statistics and comparison analysis. The results showed that, artificially aerated ponds had a higher final number (58.630 larvae), compared to the water exchange (24.451 larvae), adding both proportions. The physicochemical parameters of the water presented significant differences (p<0.05) between both managements, but they were within the optimum ranges for the hybrid, with oxygen levels between 7.0-10.7 mg/L, temperatures between 25.7-29.8 °C and pH between 8.5-9.0, considering both proportions. The management with aeration presented the highest number of larvae in both proportions. Se planteo como objetivo general evaluar el numero de larvas de Oreochromis sp en proporciones reproductivas 3:1 y 3:2 (relacion Hembras:Machos) y los parametros fisicoquimicos del agua en dos sistemas de manejo (recambio de agua y aireacion artificial), realizado en el Centro Experimental Piscicola en San Jeronimo (Antioquia). Los datos fueron procesados mediante el paquete estadisticos PAST © para estadistica descriptiva y analisis de comparacion. Los resultados mostraron que, los estanques con aireacion artificial tuvieron un mayor numero final (58.630 larvas), respecto al recambio de agua (24.451 larvas), sumando ambas proporciones. Los parametros fisicoquimicos del agua presentaron diferencias significativas (p<0.05) entre ambos manejos, estando dentro de los rangos optimos para el hibrido, con niveles de Oxigeno entre 7.0–10.7 mg/L, temperaturas entre 25.7–29.8 °C y pH entre 8.5–9.0, considerando ambas proporciones. El manejo con aireacion presento el mayor numero de larvas en las dos proporciones.