Acute toxicity of Diazinon to the Caspian vimba, Vimba vimba persa (Cypriniformes: Cyprinidae)

Mohammad Mansouri Chorehi, Hamed Ghaffari, Seyede Amene Hossaini, Elaheh Hassan Nataje Niazie, Mohammad Forouhar Vajargah, Aliakbar Hedayati

Abstract

The present research was performed to determine lethal concentrations of diazinon for the Caspian vimba, Vimba vimba persa. Fish samples (50 ± 5 g) collected from Sefidroud river were acclimatized for 5 days and exposed to 5 concentrations of diazinon, 0.07, 0.08, 0.1, 0.13 and 0.16 mg/l (with three replicates) and lethal concentrations (LC) LC1, LC10, LC30, LC50, LC70, LC90 and LC99 for 24, 48, 72 and 96 h were determined using a probit analysis. The results indicated that the 96 h LC50 value of diazinon for Caspian Vimba was 0.08 mg/l.

Keywords

Insecticide, Diazinon, Vimba, LC50

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