Efecto de sustancias antimicrobianas y de la salinidad durante la conservacion de huevos del copepodo Acartia tonsa (Dana) para la alimentacion de larvas de atun rojo (Thunnus thynnus)

Developing methods to preserve copepod eggs is necessary to ensure their availability for use in aquaculture. In this study, Acartia tonsa eggs have been treated with formaldehyde, bronopol and hydrogen peroxide, and then stored in water at different salinities. We have also tried the efficacy of liquid glycerin as a preservative because it ensures anaerobic conditions. During the first month of conservation, the use of bronopol was the best treatment, being significantly higher than the control group. The use of hydrogen peroxide is useless because its use prevents a hatching rate above 5%. From the first month, the use of glycerin was significantly better than other treatments and it ensures a hatching rate about 25% for at least 120 days. No significant differences were found with the use of water at different salinities.