Concentrations (µg/g)    
LIVER GILLS STOMACH FLESH
o, p'-DDE 5.86a ± 0.24 4.65b ± 0.25 4.21c ± 0.35 2.76d ± 0.25
p,p’-DDD 4.65a ± 0.53 2.84b ± 0.25 2.21c ± 0.16 1.45a ± 0.25
o,p’-DDD 2.33a ± 0.17 2.06a ± 0.44 1.34b ± 0.27 0.88c ± 0.01
p,p’-DDT 3.31a ± 0.54 2.06b ± 0.22 1.22c ± 0.32 0.65d ± 0.04
Alpha BHC 6.21a ± 0.77 4.32b ± 0.54 2.44c ± 0.32 1.76d ± 0.33
Gamma BHC 5.87a ± 0.34 4.33b ± 0.22 3.06c ± 0.45 2.66d ± 0.64
Metoxichlor 1.43a ± 0.05 1.21a ± 0.12 0.76b ± 0.01 0.43c ± 0.24
Lindane 3.65a ± 0.76 2.77b ± 0.65 2.24c ± 0.05 1.87d ± 0.15
Endosulfan 7.54a ± 0.23 5.11b ± 0.33 4.22c ± 0.83 3.84d ± 0.27
Aldrin 2.68a ± 0.12 2.11b ± 0.16 1.75c ± 0.42 0.92d ± 0.02
Dieldrin 5.14a ± 0.27 4.75b ± 0.76 4.35c ± 0.56 3.21d ± 0.32
Within rows mean and standard deviation with difference letters are statistically significant, P<0.05
Table 2: Mean Concentrations of Some Organochlorine Pesticide Residues in different organs of Clarias gariepinus from Alau Dam.