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A noninvasive monitoring device for anesthetics in fish

Authors Power DM, Fuentes J, Harrison A

Published 17 June 2010 Volume 2010:2 Pages 17—23


Review by Single-blind

Peer reviewer comments 3

Deborah M Power1, Juan Fuentes1, Adrian P Harrison2

1Centro de Ciências do Mar, Universidade doe Ailgarvme, Portugal; 2Section for Physiology & Biochemistry, IBHV, Faculty of Life Sciences, Copenhagen University, Denmark

Abstract: A noninvasive device capable of recording both gill and lateral fin movements was assembled and used to analyze initial and post-treatment activity frequency (Hz) in fish exposed to anesthetics. Exposure of platy fish (Xiphosphorus maculatus) to saponins from quillaja bark (0.185 mM and 0.555 mM) initially caused hyperactivity, but within five minutes all activity ceased and the fish failed to recover. In contrast, clove oil (67 μg/L) added to water at 22oC reduced activity by 22.8% ± 8.9% (P = 0.038) after 125 ± 19 sec, a sedative effect that was totally reversible. Cinnamon oil compared with clove oil had a significantly longer time to sedation (125 ± 19 versus 235 ± 24 sec, P = 0.02), although no significant difference in the decline in activity was noted.
Keywords: anesthetics, cinnamon oil, clove oil, platy fish, recording device, teleost

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