Research Article
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 |
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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.
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