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Toxic Effects of Acute Exposure of Diazinon in turbot (Psetta maxima) Early Life Stage (ELS) | ||
| International Journal of Environmental Research | ||
| مقاله 14، دوره 6، شماره 1، فروردین 2012، صفحه 139-144 اصل مقاله (134.29 K) | ||
| شناسه دیجیتال (DOI): 10.22059/ijer.2011.480 | ||
| نویسندگان | ||
| L. Mhadhbi1؛ M. Boumaiza* 2 | ||
| 1Toralla Marine Science Station (ECIMAT) E-36331 Vigo, Galicia, Spain | ||
| 2Hydrobiology Unit, Environmental Biomonitoring Laboratory, Faculty of Sciences Bizerte, University of Carthage, Zarzouna 7021, Tunisia | ||
| چکیده | ||
| In the present study, the toxic effects on the embryos and larvae of the turbot were used as a model to investigate the diazinon, which contaminates aquatic ecosystems. The number of dead embryos significantly increased in response to diazinon concentrations 0.2, 0.4, 0.8, 1.6, 3.2, and 7.4 mg/L. The 48h LC50 value of diazinon for turbot embryos was estimated at 1.85 mg/L. Dose–response decreases in hatching success were recorded as 97, 92.4, 80.3, 60.3, 38.7 and 27.1%, respectively. The number of dead larvae significantly increased with increasing diazinon concentrations exposed for 24–96 h (p < 0.05). The 24, 48, 72 and 96h LC50 values of diazinon for turbot larvae were estimated at 4.8 (6.4-5.12), 3.3 (4.73-2.52), 2.1 (3.29- 1.65) and 1.23 (0.87–2.38) mg/L, respectively. There were significant differences in the LC50 values obtained at different exposure times (p <0.05). Diazinon caused lethal toxicity as well as nonlethal malformations during embryo-larvae development. | ||
| کلیدواژه‌ها | ||
| Turbot؛ Embryo-larvae؛ Acute toxicity؛ sublethal effects؛ diazinon | ||
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