نتایج جستجو برای: resistance of mosquitoes to insecticides
تعداد نتایج: 22192717 فیلتر نتایج به سال:
Insecticide resistance constitutes a major threat that may undermine current gain in malaria control in most endemic countries. National Malaria Control Programmes (NMCPs) need as much information as possible on the resistance status of malaria vectors and underlying mechanisms in order to implement the most relevant and efficient control strategy. Bioassays, biochemical and molecular analysis ...
the present study set out (a) to examine the categories of pedagogical knowledge related to the act of teaching of novice and experienced teachers as gleaned from their verbal report of what they were thinking about while teaching and (b) to compare the categories of pedagogical knowledge of novice and experienced teachers. the aim of comparing these two groups of teachers was to see whether di...
Controlling Aedes aegypti mosquitoes with chemical insecticides causes resistance on humans, environmental residues, and contaminates food water. Polygala paniculata is a potential alternative to in controlling Ae. aegypti. This study aimed determine the effect of Insecticide Score P. extracts mortality based KT50. A total 20 for each concentration were used examine effectiveness 10%, 15%, 20%,...
Plants produce various secondary metabolites that offer a potential source of novel insecticides and repellents for the control of mosquito vectors. Plants of the genus Cinnamosma are endemic to, and widely-distributed throughout, the island of Madagascar. The barks of these species are commonly used in traditional medicines for treating a wide range of maladies. The therapeutic nature of the b...
BACKGROUND AND OBJECTIVES The main rural malaria vector Anopheles culicifacies has developed resistance to dichloro diphenyl trichloroethane (DDT), hexachloro cyclo hexane (HCH) and malathion in the state of Haryana in northern India. An alternative synthetic pyrethroid insecticide bifenthrin was therefore evaluated on mosquito nets against anopheline and culicine mosquitoes, in two villages Ja...
Dengue (family Flaviridae, genus Flavivirus, DENV) and dengue hemorrhagic fever (DHF) are presently important public health problems in Costa Rica. The primary strategy for disease control is based on reducing population densities of the main mosquito vector Aedes aegypti (L.) (Diptera: Culicidae). This is heavily dependent on use of chemical insecticides, thus the development of resistance is ...
In Delaware, mosquito control is performed through the multi-disciplinary techniques of Integrated Pest Management (IPM) that advocates and practices (in this preferential order): 1) source reduction (elimination of mosquito breeding sites); 2) surveillance (determining mosquito population sizes and in turn directing the need and specific areas for control by insecticides); 3) larviciding (cont...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
Bacterial insecticides have been used for the control of nuisance and vector mosquitoes for more than two decades. Nevertheless, due primarily to their high cost and often only moderate efficacy, these insecticides remain of limited use in tropical countries where mosquito-borne diseases are prevalent. Recently, however, recombinant DNA techniques have been used to improve bacterial insecticide...
The mosquito Aedes aegypti (Diptera: Culicidae) is the primary vector of dengue in Mexi‐ co and lately virus Chikungunya, although Aedes albopictus is widely distributed; its role in both diseases’ transmission has not been confirmed. The control of mosquitoes in Mex‐ ico includes source reduction consisting in the elimination of containers that are favorable sites for oviposition and developme...
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