Studies on mosquito borne dieases in Egypt and Qatar

Mosquitoes identification, distribution and densities in representative Egyptian Governorates and five Qatarain Municipalities [Al Rayyan, Doha, Al Daayan, Al Khor and Al Zahakira and Al Shamal] were studied. In Qatar the larvae were Culex pipiens complex, C. univettatus, C. pusillus, Aedes caspies, Anopheles multicolor and A. stephensi. C. pipiens and C. univettatus were mainly in Al Rayyan, Doha, and Al Khor and Al Zahakira. C. pusillus was in Doha and Al Daayan while A. caspies was in Al Daayan and Al Shamal. Anopheles multicolor and A. stephensi were mainly in Al Shamal with low density in Al Rayyan [only in Ain- Khalid locution]. The Egyptian mosquitoes were C. pipiens, C. antennatus, C. thelerei, C. univittatus, C. perexiguus, C. poicilipes, C. pusillus, Aedes caspius, Ae. detritus, A. sergentii, A. pharoensis, A. multicolor, A. detail, A. algeriensis, A. tene-brosus, A. gambiae [formerly], A. superpictus, A. tarkhadi, A. hispaniola, A. rhodesiensis, A. stephensi, A. coustani and Culiseta longiareolata. As an example in Sharkia Governorate, larvae were C. pipiens [68.77%], Ae. caspius [15.75%], Culiseta sp. [=Theobaldia] and C. pusillus. In Greater Cairo, parts of Qualyoubia G., C. pipiens was the most dominant and the least was C. perexiguus. In parts of Giza G., C. pipiens was the most dominant and least was Cs. longiareolata. In Cairo G., C. pipiens was the most dominant and least was Ae. caspius. The overall in Greater Cairo was C. pipiens [61.74%], Cs. longiareolata [15.56%], Ae. caspius [15.3%], C. pusillus [4.0%] and C. perexiguus [3.16%]

Susceptibility of culex pipiens complex to some insecticides in Qatar

Insecticides susceptibility tests were conducted on Culex pipiens larvae from both Doha and Al-Rayan. The insecticides used were chloropyrifos, propetamphos [Organophosphorous], cyphenothrin, cyfluthrin [Synthetic] and etofenprox. Larvae in Al-Rayan district were more susceptible to all insecticides than in Doha. The chlorophyrifos and cyfluthrin were the most effective larvicides, cyphenothrin was moderate and propetamphos and etofanprox were the least ones