Determination the lethal concentration (LC50 96h) of Diazinon on Vimba persa

Document Type : Original Article

Authors

1 Department of Fisheris, Faculty of Natural Resources, University of Guilan, Someh Sara

2 Ph.D candidate in aquaculture, Department of fisheries, faculty of natural resources, Urmia University, Urmia

3 Department of Fisheris, Fisheries and Enviroment, University of Gorgan, Gorgan

Abstract

The purpose of this study was to determine the acceptable limit Diazinon in the system of study Vimba persa. For this study, 90 fish with an average weight of 50±5 g of White River has been fishing in Gilan Province in late September and were kept in vitro for five days at the aquarium (size 30 × 40 × 70). In this study, treatment with five concentration, 0.07, 0.08, 0.1, 0.13 and 16.0 with three replications was conducted. Then based on the statistical program Probit version 16.0, LC1, LC10, LC30, LC50, LC70, LC90 and LC99 values were measured in 24, 48, 72 and 96 on the Vimba persa. The results showed that the LC50 96h of this poison was 0.08 mg/l and the maximum allowable concentration (MAC value) were measured 0.008 mg/l. Finally were classified diazinon to fish 50 grams of Vimba persa "high toxicity". 

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