VARIABLES QUE AFECTAN LA PRODUCCIÓN DE <i>Litopenaeus vannamei</i> EN GUERRERO, MÉXICO

The objective of this study was to determine if physicochemical variables (salinity, temperature, dissolved oxygen, pH, calcium, ammonium, nitrite, magnesium and potassium), and the use of molasses with probiotics significantly influence shrimp development. The study was carried out during the dry and rainy seasons, in two ponds of 1 ha each, at the aquaculture farm “El Camarón Dorado” in San Nicolás, Coyuca de Benítez, Guerrero. In both seasons and ponds, the temperature, dissolved oxygen, nitrites and magnesium were found to be within the permitted ranges for shrimp productivity. However, according to the Principal Component Analysis in pond 1, component 1, the weight of the organisms was negatively related to pH, temperature and magnesium. In pond 2, weight was related to temperature and magnesium in component one, while in component two, dissolved oxygen was negatively related to ammonium and potassium. Pearson's correlation revealed that dissolved oxygen, pH, temperature, hardness, magnesium, potassium and ammonium were the main factors affecting shrimp productivity during the rainy season. There was a significant difference (p > 0.05) in the variables pH, potassium and salinity between the dry and rainy periods. It was concluded that the use of molasses with probiotics contributes to water quality and shrimp growth, however, but the effectiveness will depend on the management of the aquaculture production process.