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:: دوره 19، شماره 2 - ( 1398 ) ::
جلد 19 شماره 2 صفحات 934-941 برگشت به فهرست نسخه ها
Investigation of acute toxicity of lead-manganese mixture to fish under laboratory conditions
چکیده:   (859 مشاهده)
The aim of this study was to investigate acute toxicity (96-hr LC50 and lethal concentrations) of waterborne metal mixture (Pb+Mn) for the fish, Catla catla, Labeo rohita, Cirrhina mrigala, Ctenopharyngodon idella and Hypophthalmichthys molitrix. The extent of metals bio- accumulation in fish body organs viz. gills, liver, kidney, fins, bones, muscle and skin at both 96-hr LC50 and lethal concentrations were also determined. The criteria of toxicity used during these experiments were mortality upon the 90-day old fish species. The tests were performed, separately, at constant pH (7), temperature (30°C) and hardness (200 mg L-1) of water with three replications for each test dose. The overall sensitivity of five fish species, determined in terms of LC50 and lethal concentrations, against metals mixture (Pb+Mn) varied significantly. Among five fish species, H. molitrix were significantly more sensitive to metals mixture with mean 96 hr-LC50 and lethal concentrations of 69.36±0.03 and 114.51±0.02, respectively. Regarding overall responses of five fish species for their ability to accumulate metals, kidney appeared as an organ to amass significantly higher amounts of metals, followed by that of liver while it was significantly least in fish muscles. Accumulation of the metals in fish body followed the general order: kidney>liver>fins>gills >skin>bones>muscle.
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نوع مطالعه: پژوهشي | موضوع مقاله: aquaculture
دریافت: 1391/5/25 | پذیرش: 1397/1/26 | انتشار: 1399/1/1
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Naz S, Javed M, Chatha A. Investigation of acute toxicity of lead-manganese mixture to fish under laboratory conditions. IJFS. 2020; 19 (2) :934-941
URL: http://jifro.ir/article-1-603-fa.html

Investigation of acute toxicity of lead-manganese mixture to fish under laboratory conditions. مجله علوم شیلاتی ایران. 1398; 19 (2) :934-941

URL: http://jifro.ir/article-1-603-fa.html



دوره 19، شماره 2 - ( 1398 ) برگشت به فهرست نسخه ها
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
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