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:: Volume 20, Issue 3 (10-2011) ::
isfj 2011, 20(3): 55-62 Back to browse issues page
Effects of Diazinon concentrations on LC50, hematocrit and clinical signs of Roach Torkemani (Rutilus rutilus caspius) fries of Caspian Sea
M. Sheikh * 1, A.M. Hajimoradloo , R. Ghorbani , M. Mollaei , A. Khodanazary
Abstract:   (15609 Views)
Effects of different concentrations of Diazinon on Roach Torkemani (Rutilus rutilus caspius) fries supplied from Ghareh-Soo Fishery Research Station was studied in Gorgan University of Agricultural Science and Natural Resources in 2009 to determine 50% lethal concentration (LC50) for the fish within 96 hours. In this study, 126 Roach fries with mean weight of 3 grams were used. Tests were performed statically based on instructions of O.E.C.D under fixed water quality conditions at the temperature 24±1 and pH 8-8.5 in a completely random trial with five concentrations treatments of Diazinon (5, 5.95, 7.07, 8.48 and 10mg/l) in three replications and the means were compared using Duncan test at 5% significance level. The results indicated that at the end of 96-hour test, LC50 was 7.88mg/l. In this test, clinical signs such as hunched spinal column, thrilling, clot in caudal fin and head, and irregular swimming were observed in the studied fish specimens. In hematological examination, there was a remarkable decrease in percent of hematocrit between concentrations of 5 and 5.95mg/l of Diazinon. By increasing the concentration of this poison, the decrease became slower. Furthermore, there was a significant difference in percent of hematocrit between control group and LC50 group, with mean amounts of 36 and 27%, respectively. Based on the results, Diazinon was classified as toxic pesticide for Roach Torkemani. *Corresponding author
Keywords: Rutilus rutilus caspius, Polluon, Toxic pesticide
Full-Text [PDF 498 kb]   (5120 Downloads)    
Type of Study: Research | Subject: آلودگي محيطهاي آبي
Received: 2012/05/22 | Accepted: 2015/07/4 | Published: 2015/07/4
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Sheikh M, Hajimoradloo A, Ghorbani R, Mollaei M, Khodanazary A. Effects of Diazinon concentrations on LC50, hematocrit and clinical signs of Roach Torkemani (Rutilus rutilus caspius) fries of Caspian Sea. isfj 2011; 20 (3) :55-62
URL: http://isfj.ir/article-1-419-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 20, Issue 3 (10-2011) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

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