3,231 research outputs found
A noninvasive monitoring device for anesthetics in fish
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.DMP acknowledges the support of an
STMS exchange grant funded in the context of COST 925
action
- …