Effect of sublethal concentration of sniper 1000EC on weight and length growth of Oreochromisniloticus obtained from Asa dam under laboratory conditions
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and Publications Committee, University of Ilorin
The study investigated the effect of sublethal concentration of sniper 1000EC on the weight and length growth of Oreochromis niloticus obtained from Asa dam under laboratory conditions. Indiscriminate use of Sniper 1000EC by fishermen has become a serious problem in Northern region of Nigeria. Juveniles of Oreochromis niloticus (mean body weight 7.05± 1.02; mean standard length.9.60±0.38cm) were subjected to 5 sublethal treatment levels: 0.00mg/L is the control, 0.12, 0.15, 0.19 and 0.25mg/L. There was no significant difference between water quality parameters of the exposed and control groups. A 56 day exposure to sublethal concentrations of the toxicant led to a significant decrease (p<0.05) in specific and relative growth rate in the exposed fish species in comparison with their controls. Change in weight and length decreases with increasing sublethal concentrations of sniper 1000EC. It is concluded that depressive growth rate in the exposed fish species were consequences of exposure to the toxicant (sniper 1000EC).It is recommended that the use of Sniper 1000EC by local fishermen be banned to save the aquatic environment from destruction.
Sniper 1000EC, Oreochromis niloticus, chronic toxicity and growth rates.