Efecto del óxido de silicio micronizado en la productividad primaria y calidad de agua en estanques de cultivo de litopenaeus vannamei.

Abstract

Primary productivity serves as an indicator of management practices in aquatic environments and the dynamics of nutrients within ponds. Achieving an optimal phytoplankton profile requires the implementation of effective strategies. A significant increase in diatom cell density in aquaculture can be attained by incorporating specific fertilizers containing silicon. This research evaluated the effect of micronized silicon oxide as a viable alternative for enhancing diatom density, considering and analyzing various intervening parameters such as salinity, pH, temperature, and nutrients. The experiment was conducted under two different salinity conditions. In marine environments, control ponds exhibited a Bacillariophyta density of 62,292 cells/mL, while ponds treated with the fertilizer reached concentrations of 118,611 cells/mL, representing a 90.41% increase. In brackish water, the densities in fertilized and control ponds were 81,042 cells/mL and 110,417 cells/mL, respectively, reflecting a 36.25% increase. It was confirmed that micronized silicon oxide positively influences diatom density in both environments. Additionally, environmental conditions such as salinity, temperature, and N:P ratios were observed to affect the identified taxonomic groups. However, high cyanobacteria counts were associated with variations in temperature, phosphorus, and salinity. These findings indicate that micronized silicon oxide enhances diatom concentration in both brackish and marine environments, with greater efficiency observed in the marine setting.