Volume 3, Issue 2 (2014)                   JFST 2014, 3(2): 1-11 | Back to browse issues page

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Shiry N, Mirvaghefi A. Toxicity degree of malathion and assessment its impacts on some blood indices in caspian common carp (Cyprinus carpio, Linnaeus, 1758). JFST 2014; 3 (2) :1-11
URL: http://jfst.modares.ac.ir/article-6-8267-en.html
Toxicity degree of malathion and assessment its impacts on some blood indices in caspian common carp (Cyprinus carpio, Linnaeus, 1758)
Nima Shiry * 1, Alireza Mirvaghefi2
1- Department of Fishery and Environment, Natural Resources Faculty, University of Tehran.
2- Department of Fishery and Environment, Natural Resources Faculty, University of Tehran
Abstract:   (11311 Views)
Toxicity and LC50 96-h of Malathion on the Caspian common carp fingerlings, Cyprinuscarpio, and its effects on some blood indices, including hematocrit, glucose, cholesterol and total protein content, were investigated. The median lethal concentration, the lowest effective concentration and the maximum allowable concentration were found to be 1.3, 0.646 and 0.13 mg.L-1, respectively. Based on the LC50 finding, Malathion can be regarded as “moderately toxic” for this fish.  Significant differences between the hematocrit, glucose, and cholesterol among treatments were evident, but no significant difference in the total protein of blood plasma was observed. The hematocrit level in the control group was lower than the other groups. The lowest levels of cholesterol and glucose were observed in 0.5 mg/L, and the maximum levels were found in 2.5 and 2 mg/L, respectively. Therefore, malathion which is supposed to be ineffective for non-target species at allowable concentrations, can lead to their blood indicies responses and bio-damages.
Keywords: LC50, Caspian common carp, LC50, Blood indices, Malathion
Full-Text [PDF 268 kb]   (3278 Downloads)    
Article Type: Research Article | Subject: Fish diseases|Biology and physiology|Water managment
Received: 2013/08/1 | Published: 2014/08/23
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