International Journal of Fisheries and Aquatic Studies
2018, Vol. 6, Issue 2, Part F
Acute toxicity assessment of lead nitrate on Clarias Gariepinus (Burchell, 1822)
Author(s): Patrick Ozovehe Samuel, Loveline C Okoye, Paul O Abiola, Francis O Arimoro and Yohanna I Auta
Abstract: Acute toxicity assessment of lead nitrate ((PbNO
3)
2) on post juvenile
Clarias gariepinus under laboratory conditions were investigated. A total of 150 samples of the fish were acclimatized for two week. 6 aquaria tanks were set-up for determination of the 96hours LC
50 with 6 samples of fish per tank. The lethal concentration values of lead nitrate used were 240mg/L, 260mg/L, 290mg/L, 320mg/L and 34mg/L with replicate in each case. The control setup was without the toxicant. The fish samples exhibited varying behavioural and physical changes which ranged from erratic swimming, poor feeding habit, frequent gasping for air at the surface of the tank, lacerations of the skin and secretion of mucus, and eventually death. The vigour and severity of these features were time and concentration dependent. The results showed that 96hours LC
50 of
Clarias gariepinus was 284.189mg/L. This indicated that greater quantity of the toxicant is needed to cause mortality in the fish and less deleterious at lower concentrations.
Pages: 459-462 | 907 Views 160 DownloadsDownload Full Article: Click Here
How to cite this article:
Patrick Ozovehe Samuel, Loveline C Okoye, Paul O Abiola, Francis O Arimoro, Yohanna I Auta. Acute toxicity assessment of lead nitrate on Clarias Gariepinus (Burchell, 1822). Int J Fish Aquat Stud 2018;6(2):459-462.