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   Effect of Lethal Concentration of Commercial Gasoline on Caspian Roach (Rutilus caspicus)  
   
نویسنده hedayati aliakbar ,darabitabar fatemeh ,bagheri toktam ,moradzadeh mohammad ,jafari omid
منبع avicenna journal of environmental health engineering - 2016 - دوره : 3 - شماره : 1 - صفحه:1 -5
چکیده    In this study, the mortality effects of commercial gasoline at different tested concentrations were evaluated on the common roach (rutilus caspicus) and lc50 values for each time period (24, 48, 72, and 96 hours) have been determined. roach with an average weight of 3.1  0.45 g and lengths of 4  0.25 cm were used in this study. after transferring the 200 fish to the laboratory, they were kept in tanks of 100 liters for one week to adapt them to the experimental conditions. after the adaptation period, 100 fish were selected randomly and divided into 14 treatments (0, 2, 5, 10, 20, 40, 60, 80, 100, 200, 400, 600, 800, and 100 ppm commercial gasoline). the treatments were completed in triplicate. the results of this study show that the 96-hour lc50 of commercial gasoline is 600.2 0.44ppmand themaximumallowable concentration (mac) is 60.02 mg/l. the study demonstrates the deadly effects of commercial gasolineonthe caspian roach. spillage of dieselandgasoline fuelsfromtransport tankers can enter riversandeventually the marine ecosystem, and reach nursery and spawning areas where it can become a serious threat to fish survival.
کلیدواژه Pollution ,LC50 ,Common Roach ,MAC
آدرس gorgan university of agricultural sciences and natural resources, faculty of fisheries and environmental sciences, department of fisheries, ایران, khorramshahr university of marine sciences and technology, faculty of marine natural resources, department of fisheries, ایران, shahrekord university, faculty of veterinary medicine, department of food hygiene, ایران, gorgan university of agricultural sciences and natural resources, faculty of fisheries and environmental sciences, department of fisheries, ایران, gorgan university of agricultural sciences and natural resources, faculty of fisheries and environmental sciences, department of fisheries, ایران
 
     
   
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