Submit Manuscript

Pakistan Journal of Biological Sciences

Year: 2005 | Volume: 8 | Issue: 5 | Page No.: 751-753
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

Article Trend

Total views 203

Search

Authors

Hamdy I. Hussein

DiefAlla Al-Rajhy

Mohamed Al-Assiry

Keywords

Research Article

Toxicity of Four Pyrethroid-based Insecticides and Kerosene to a Laboratory Population of Culex pipiens

Hamdy I. Hussein, DiefAlla Al-Rajhy and Mohamed Al-Assiry
Four commercial pyrethroid–based insecticides, cypermethrin, fenvalerate, Killer and Tyfon super 20 were tested as larvicides against a laboratory strain of Culex pipiens and kerosene and Tween 80 1% in kerosene were tested as larvicides and pupicides against the same population. LC50 values of tested pyrethroids were 0.00029 ppm (Cypermethrin), 0.026 ppm (fenvalerate), 0.012 ppm (Killer) and 0.014 ppm (Tyfon super 20). The diagnostic concentrations for cypermethrin and Tyfon Super 20 were 0.015 and 0.07 ppm, respectively. LD50 values for larvae were 33.42 and 13.11 L ha-1 and for pupae 69.74 and 36.1 L ha-1 for kerosene and T 80 in kerosene, respectively. The results showed that the mixture of kerosene + T 80 could be used as an effective larvicide and pupicide at much lower rates of application compared to kerosene alone, which reduces the environmental pollution to a great extend.
PDF References Citation

Leave a Comment

Your email address will not be published. Required fields are marked *