Abstract
The sea urchin, Echinometra lucunter, is consumed in restaurants in Europe and Asia for high prices. This study evaluated the use of the essential oil of Lippia alba (EOL) as a sedative and anesthetic in this sea urchin. Different EOL concentrations were tested (50, 100 and 150 μL L−1), in addition to a group that received ethanol and a control group. After the anesthesia and recovery from the different treatments, the coelomic fluid, gonads and intestine were collected for the analysis of oxidative stress parameters. The highest concentration tested (150 μL L−1) was determined to be the optimal concentration for anesthesia. Results suggest that EOL improved the response to oxidative stress, since a lower level of thiobarbituric acid-reactive substances and greater superoxide dismutase and catalase activities were observed in the coelomic fluid and E. lucunter gonads, making the EOL a promising anesthetic for sea urchins.
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