Cytogenotoxicity of Abattoir Effluent in Clarias gariepinus (Burchell, 1822) Using Micronucleus Test

Table 2

Mean ± SE/1000 cells of total nuclear abnormalities (NA) in peripheral erythrocytes of C. gariepinus exposed to abattoir effluent.

Treatment	Conc. (v/v; %)	7 days	14 days	28 days
Tap water	0	0.01 ± 0.08	0.01 ± 0.01	0.00 ± 0.00
Benzene	0.02 (mL/L)	0.19 ± 0.0	0.32 ± 0.10	0.22 ± 0.16
Abattoir; effluent	0.2	0.19 ± 0.11	0.03 ± 0.12	0.10 ± 0.04
	0.4	0.61 ± 0.29	0.21 ± 0.10	0.28 ± 0.12
	0.8	0.91 ± 0.25	0.14 ± 0.04	0.29 ± 0.16
	1.6	0.64 ± 0.27	0.08 ± 0.03	0.28 ± 0.09
	3.1	0.25 ± 0.08	0.08 ± 0.05	0.22 ± 0.12

Superscripts are significantly (; ) different from negative control using Dunnett’s multiple post hoc comparison test.