Sublethal Effects of Methanolic Extract of Raphia hookeri on the Reproductive Capacity of Clarias gariepinus

Table 3

Effect of pituitary gland preparation and sperm from exposed C. gariepinus male brood-stock on eggs’ fertilization and hatchability.

Conc. (mg/L)	Replicates	Weight of exposed male broods (g)	Total number of hatched eggs	Total number of unhatched eggs	% viability
0	C1	296.0	5073	300	96.42
0	C2	302.3	6050	222	96.46
40	R1A	124.0	1743	3647	32.34
40	R1B	374.4	2422	4835	33.37
40	R2A	220.5	728	2896	20.09
40	R2B	279.0	1405	4836	22.51
60	R1A	498.7	28	13176	0.21
60	R1B	449.5	0	10980	0
60	R2A	368.0	20	4812	0.41
60	R2B	431.5	0	5260	0
120	R1A	299.0	0	4055	0
120	R1B	299.0	0	4055	0
120	R2A	376.6	0	3405	0
120	R2B	376.6	0	3405	0

Note: Weight of the unexposed female fish used for fertilization ranged from 179 g to 320 g with a mean weight of 248.7 g.