Sublethal Effects of Methanolic Extract of Raphia hookeri on the Reproductive Capacity of Clarias gariepinus
Table 2
(a) Effects of different R. hookeri methanolic extract concentrations on male and female brood stock of C. gariepinus. (b) Time dependence of the toxicity of different R. hookeri methanolic extract concentrations on male brood stock of C. gariepinus over 96 hours. (c) Time dependence of the toxicity of different R. hookeri methanolic extract concentrations on female brood stock of C. gariepinus over 96 hours.
(a)
Concentration (mg/L)
Number of survivors
% survival
Male
Female
Male
Female
Control
4
4
100
100
400
4
n/a
100
n/a
600
2
4
50
100
800
1
2
25
50
1000
0
1
0
25
1200
n/a
1
n/a
25
Male LC50 = 600 mg/L; Female LC50 = 800 mg/L. n/a: not applicable.
(b)
Concentration (mg/L)
Mean % mortality over exposure period Time (hours)
1
2
4
8
16
24
48
72
96
1000
0
0
0
0
0
0
100
100
100
800
0
0
0
0
0
0
75
75
75
600
0
0
0
0
0
0
50
50
50
400
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
(c)
Concentration (mg/L)
Mean % mortality over the exposure period Time (hours)
