STUDIES ON THE EFFECT OF THIOBENCARB HERBICIDE ON SOME BIOLOGICAL, PHYSIOLOGICAL, BIOCHEMICAL, HISTOLOGICAL AND GENETIC ASPECTS OF NILE TILAPIA, OREOCHROMIS NILOTICUS | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 6, Volume 11, Issue 1, January 2007, Pages 123-150 PDF (2.42 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.2007.1923 | ||
| Authors | ||
| Hossam Abbas1; Mohammad Authman1; Ashraf El. Badawi2; Iman Abumourad1 | ||
| 1Department of Hydrobiology, National Research Centre, Giza, Egypt | ||
| 2Central Lab. For Aquaculture Research-Abbassa, Abo-Hamad, Sharkia, Egypt. | ||
| Abstract | ||
| This study was undertaken to evaluate the impact of short-term and long-term exposure to the herbicide thiobencarb, wh*ehr4s~tege^ ;$ged~^"M^^-GQnta^ rice cultivation in Egypt,., on ^Ue tilapia; Orepchromis niloticusrLQi[\d\ and sublethal effects of thiobencarb on physiological, biochemical and histological parameters were also studied on the fish as a function of exposure time. Exposure of O. niloticus to lethal and sublethal levels of thiobencarb resulted in significantly (PO.05) lower values for liver and muscle glycogen, total protein and total lipids compared with the control group. In contrast, there was a significant increase (P<0.05) in muscle ash, water content, glucose, cholesterol, creatinine, Uric acid and Lactate dehydrogenase (LDH) in the herbicide-treated group, while aspartate aminotransferase (AST) and alanine aminotransferase (ALT) showed a fluctuated activity in both of acute and chronic exposure. The data indicated that the residue of thiobencarb had a higher value in the liver, while the lowest value was in the brain, Histological sections in gills, kidneys, spleen and liver of treated fish revealed pathological alterations. Cytotoxicity assessment was also included. Fish exposed to thiobencarp showed a significant reduction in growth parameters. The genetic investigations showed breaks, gaps, centromeric attenuation, centric fusion and deletion were the common aberrations. The mean percentage of aberrations were timedependent. | ||
| Keywords | ||
| tilapia; Cichidae; Growth; Dynamics; Lake Manzala; Egypt | ||
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