Variación temporal de la concentración de bacterias heterotróficas, vibrios y pseudomonas durante la transición intermareal en el estero Huayla

Abstract

Vibrios and Pseudomonas are common pathogenic microorganisms in marine water bodies and are a natural part of the environment. The amount of these microorganisms can vary depending on the type of tide and the lunar phase in which it is found. The present work was carried out to analyze the temporal variation of the concentration of Vibrios and Pseudomonas during the intertidal transition in the Estero Huaylá, using microbiological cultures to determine the differences in the concentration of bacteria in the two intertidal states. TCBS agar was used for the identification of Vibrios and Cetrimide agar for the identification of Pseudomonas, with dilutions of 10-1/10-2. With the results obtained, it was determined that during low tide the greatest number of Vibrioss and Pseudomonas microorganisms existed. The ANOVA test with Duncan's test (p<0.05) determined that the Vibrioss load in the Waning Moon phase was 942.50 CFU/ml, significantly different from the concentrations of the other lunar phases. However, the results obtained in this study indicate that during the Full Moon, a higher concentration of Vibrios (762.11 CFU) was observed compared to the other lunar phases. Finally, the New Moon presented the highest concentration of Pseudomonas, with values of 3272 CFU.