International Journal of Aquaculture, 2018, Vol.8, No.17, 127-136
132
cephalus
to reach recovery using (50 and 75 mL
-1
) were in significantly different, while using higher
concentrations (75 and 100 mL
-1
) of MS-222 displayed significantly different recovery duration than recorded
using (50 mL
-1
).
Figure 4 Dose-response for each anesthetic (clove oil, MS-222 and 2-Phenoxyethanol) on
M. cephalus
and
S. aurata
adults and
juveniles
The induction durations till complete sedation in adults
M. cephalus
were significantly different at all
concentration (300, 350 and 400 mL
-1
) of 2-Phenoxyethanol (Table 4). However recovery durations were
significantly lower using (300 mL
-1
) than that recorded after using (350 and 400 mL
-1
), but the latter
concentrations did not show any significant differences in recovery durations in adults
M. cephalus
. The induction
response of adults
S. aurata
was slightly different than that recorded in the other species as (300 and 350 mL
-1
)
did not differ significantly to induce sedation, while, the highest concentration of 2-Phenoxyethanol (400 mL
-1
)
accelerated the induction time as it was reached after 0.613 ± 0.023 min. On the contrary, the recovery time
0
0.5
1
1.5
2
2.5
S duration
Clove oil
MS 222 2- Phenoxyethanol
Adult M. cephalus
a
d
g
b
d
g
c
d
g
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
S duration
Clove oil
MS 222 2- Phenoxyethanol
Adult S. aurata
a
d
g
a
e
g
a
e h
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
R duration
Adult M. cephalus
a
d
g
b
d
h
b
d
g
0
1
2
3
4
5
6
R duration
Adult S. aurata
a
d
g
b
e
h
b
e
g
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
S duration
Juveniles
M. cephalus
a
d
g
a
d
g
a
d
g
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
S duration
Juveniles
S. aurata
a
d
g
b
d
g
c
d
g
0
0.5
1
1.5
2
2.5
3
3.5
4
R duration
Juveniles
M. cephalus
a
d
g
a
d
g
b
e
g
0
0.5
1
1.5
2
2.5
3
3.5
4
R duration
Juveniles
S. aurata
a
d
g
a
e
g
a
f
g
