الفهرس 
Chapter I: Introduction and aim of the workOnly 14 pages are availabe for public view
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Abstract
Mosquitoes are vectors for various pathogens that pose a threat to human and animal health around the world. Control efforts focused on Cx. pipiens alone may significantly reduce both human exposure to infection and epidemic distribution. Although chemical insecticides have been highly effective in controlling Cx. pipiens for many decades, they have detrimental effects on human health and the environment, as well as induce resistance in many mosquito species. Consequently, there is an urgent need to search for naturally occurring products for combating such vectors.
Therefore, the current study focused on mosquito species in Damietta region. The study is divided into 2 main parts: Mosquito survey in Damietta, and laboratory bioassay against Cx. pipiens. These investigations aimed to achieve the following purposes:
1. Survey of mosquito species aimed to provide information about the variation in mosquito species composition, abundance and distribution of mosquito larvae in Damietta governorate and to characterize the larval habitats of mosquitoes in Damietta region and examine the relation of the physicochemical factors of the breeding water with the occurrence and abundance of particular mosquito species.
2. Laboratory bioassays
a) Evaluation of some chemical insecticides against Cx. pipiens aimed to determine the current susceptibility status of Cx. pipiens larvae, the primary vector of filariasis, to some insecticides commonly used in mosquito control programs.
b) Larvicidal bioassays aimed to detect the efficient methods for controlling mosquito larvae depending on naturally occurring products with non-hazard effects on humans such as Neem oil extract and determine the toxicological activities and mean lethal concentration (LC50) of selected insecticide against larvae of Cx. pipiens.
c) Repellent bioassays aimed to find out the efficient methods for repelling mosquito adults using botanical extracts such as Neem oil extract, Peppermint oil and chinaberry oil and compare their activities with that of DEET 15%.