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Ecopersia، جلد ۱، شماره ۳، صفحات ۲۹۱-۲۹۸
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عنوان انگلیسی Toxicity of Potassium Permanganate to Caspian Kutum (Rutilus frisii kutum) at Two Sizes (1 and 3g)
چکیده انگلیسی مقاله Acute toxicity (96h-LC50) of potassium permanganate (PM) was determined for Caspian kutum Rutilus frisii kutum at two size classes (1 and 3 g). Static renewal method was used. Fish were exposed to different concentrations of PM and mortality was recorded thereafter, until 96 h. Exposed fish showed behavioral stress indicators. 96h-LC50 was calculated to be 3.204 (3.147-3.260) mg/L for small fish and 3.460 (3.393-3.528) mg/L for large fish. Safe concentration for small and large fish was calculated to be 0.003-0.320 and 0.003-0.342 mg/L, respectively. No Observed Effect Concentration (NOEC) and Lowest Observed Effect Concentration (LOEC) were 2.6 and 2.8 mg/L for small and 2.8 and 3.0 mg/L for large fish. Results indicated that Caspian kutum is susceptible to PM toxicity; although less than many tested species. Likewise, toxicity of PM significantly decreases with increase in fish weight. Higher tolerance in large fish compared to small fish might be as a result of increased stress resistance and higher quality of these fish.
کلیدواژه‌های انگلیسی مقاله Caspian Kutum,LC50,Potassium permanganate,toxicity
نویسندگان مقاله ali jafar nodeh |
former msc student, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran
سازمان اصلی تایید شده: دانشگاه گلستان (Golestan university)

سید مرتضی حسینی | seyyed morteza
phd student, faculty of fisheries and environment, gorgan university of agricultural sciences and natural resources, gorgan, iran
سازمان اصلی تایید شده: دانشگاه گلستان (Golestan university)

نشانی اینترنتی http://ecopersia.modares.ac.ir/article_10249_e824d070501061d17abb4966b12a35e0.pdf
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