EFECTO ANESTÉSICO DEL METASULFONATO DE TRICAÍNA EN PAICHES (Arapaima gigas) JUVENILES

Abstract

RESUMENEl presente estudio tuvo por objetivo evaluar la efectividad anestésica del metasulfonato de tricaína (MS-222) en seis paiches (Arapaima gigas) juveniles (180-243 días). Los peces, procedentes de la ciudad de Iquitos, con peso promedio de 730 g, fueron transportados a la Universidad Peruana Cayetano Heredia, en Lima. Los peces fueron expuestos en cuatro oportunidades a cuatro dosis de MS-222 (25, 50, 75 y 100 mg/L), para evaluar la duración de la inducción y recuperación, así como la tasa de supervivencia post-anestesia. Se registró la frecuencia de ventilación opercular y la frecuencia cardiaca mediante ecografía, y se tomaron muestras de sangre para un análisis de hemograma pre y post-anestesia. El periodo de inducción fue menor y el periodo de recuperación fue mayor a medida que aumentó la concentración del anestésico. No se observaron diferencias estadísticas en los valores hematológicos y fisiológicos pre y post-anestesia. Se concluye que el MS-222 (100 ppm) tiene efectos anestésicos eficientes en paiches juveniles en la concentración de 100 mg/L.Palabras clave: anestesia, Arapaima gigas, frecuencia opercular, tricaína, paiches, MS-222 ABSTRACTThe objective of the present study was to evaluate the effectiveness of tricaine methanesulfonate (MS-222) as anesthetic in six juvenile paiches (Arapaima gigas) (180-243 days) with a body weight of 730 g. The specimens were brought from the Iquitos city to the Universidad Peruana Cayetano Heredia in Lima. They were exposed in four opportunities to four doses of 50, 75, and 100 mg/L) to

Eugenol and tricaine methanesulfonate as anhestesics for the pearl cichlid

“…Due to the lack of studies on the use of tricaine as an anesthetic for the pearl cichlid and the high resistance of this species to anesthesia shown in experiments 1 and 2 of the present study, this assay consisted of treatments with high doses of tricaine (from 200 mg L -1 ) when compared to studies with other fish species Acta Scientiarum. Biological Sciences, v. 43, e53422, 2021 (Hinostroza & Martínez, 2013;Braz, Silva, Tesser, Sampaio, & Rodrigues, 2017). Five treatments were used in this assay and the concentrations of tricaine tested were 200, 300, 400, 500 and 600 mg L -1 .…”

“…Tricaine is used worldwide for anesthesia of fish and is approved for use with animals destined for human consumption (Carter, Woodley, & Brown, 2011). This anesthetic is derived from benzocaine and has shown promising results with several fish species (Hinostroza & Martínez, 2013;Chambel et al, 2015). However, tricaine remains accumulated in fish tissue for long periods after dosing, requiring a grace period of at least 21 days for safe consumption (Kubitza, 1998;Hinostroza & Martínez, 2013).…”

“…This anesthetic is derived from benzocaine and has shown promising results with several fish species (Hinostroza & Martínez, 2013;Chambel et al, 2015). However, tricaine remains accumulated in fish tissue for long periods after dosing, requiring a grace period of at least 21 days for safe consumption (Kubitza, 1998;Hinostroza & Martínez, 2013). Furthermore, tricaine causes a sharp reduction in water pH due to its high solubility and acidity, of which the acidity is corrected with the addition of basic compounds such as sodium bicarbonate (Hinostroza & Martínez, 2013).…”