نتایج جستجو برای: ddt resistance

تعداد نتایج: 377829  

2016
Michael Palmer

1. DDT is banned internationally for use in agriculture, but its use in malaria control remains permitted under the regulations of the Stockholm Convention. The production of DDT and its use in malaria control have never been discontinued. 2. While DDT is cheaper than most other insecticides, cost of manufacture has risen in proportion to that of petroleum, the major required raw material. More...

2011
Delenasaw Yewhalaw Fantahun Wassie Walter Steurbaut Pieter Spanoghe Wim Van Bortel Leen Denis Dejene A. Tessema Yehenew Getachew Marc Coosemans Luc Duchateau Niko Speybroeck

BACKGROUND Indoor Residual Spraying (IRS), insecticide-treated nets (ITNs) and long-lasting insecticidal nets (LLINs) are key components in malaria prevention and control strategy. However, the development of resistance by mosquitoes to insecticides recommended for IRS and/or ITNs/LLINs would affect insecticide-based malaria vector control. We assessed the susceptibility levels of Anopheles ara...

2011
S. N. Tikar M.J. Mendki A. K. Sharma D. Sukumaran Vijay Veer Shri Prakash B. D. Parashar

Susceptibility studies of malaria vectors Anopheles stephensi Liston (Diptera: Culicidae) and An. subpictus Grassi collected during 2004-2007 from various locations of Arid and Semi-Arid Zone of India were conducted by adulticide bioassay of DDT, malathion, deltamethrin and larvicide bioassay of fenthion, temephos, chlorpyriphos and malathion using diagnostic doses. Both species from all locati...

2014
Michele La Merrill Emma Karey Erin Moshier Claudia Lindtner Michael R. La Frano John W. Newman Christoph Buettner

Dichlorodiphenyltrichloroethane (DDT) has been used extensively to control malaria, typhus, body lice and bubonic plague worldwide, until countries began restricting its use in the 1970s. Its use in malaria control continues in some countries according to recommendation by the World Health Organization. Individuals exposed to elevated levels of DDT and its metabolite dichlorodiphenyldichloroeth...

Journal: :The Southeast Asian journal of tropical medicine and public health 2011
Narumon Komalamisra Raweewan Srisawat Theerawit Phanbhuwong Sompis Oatwaree

Mosquito larvae were collected from the houses of dengue infected patients in Bangkok, Thailand from 55 sites (36 out of the 50 districts of Metropolitan Bangkok). Aedes aegypti larvae were tested against temephos using WHO bioassay techniques. Adult mosquitoes were tested for susceptibility to permethrin, deltamethrin, cyfluthrin, malathion and DDT using WHO diagnostic doses. Most of the larva...

Journal: :Tropical medicine & international health : TM & IH 2008
Natacha Protopopoff Katrijn Verhaeghen Wim Van Bortel Patricia Roelants Tanguy Marcotty Dismas Baza Umberto D'Alessandro Marc Coosemans

OBJECTIVES AND METHODS In Burundi, the occurrence of the knock down resistance (kdr) mutation in Anopheles gambiae sensu lato (s.l.) was determined for six consecutive years within the framework of a vector control programme. Findings were also linked with the insecticide resistance status observed with bioassay in An. gambiae s.l. and An. funestus. RESULTS The proportion of An. gambiae s.l. ...

Journal: :Tropical medicine & international health : TM & IH 2012
Bilali Kabula Patrick Tungu Johnson Matowo Jovin Kitau Clement Mweya Basiliana Emidi Denis Masue Calvin Sindato Robert Malima Jubilate Minja Shandala Msangi Ritha Njau Franklin Mosha Stephen Magesa William Kisinza

OBJECTIVE The aim of the study was to monitor the insecticide susceptibility status of malaria vectors in 12 sentinel districts of Tanzania. METHODS WHO standard methods were used to detect knock-down and mortality in the wild female Anopheles mosquitoes collected in sentinel districts. The WHO diagnostic doses of 0.05% deltamethrin, 0.05% lambdacyhalothrin, 0.75% permethrin and 4% DDT were u...

Journal: :Pest management science 2013
Xinghui Qiu Weilin Sun Cynthia M McDonnell Hongmei Li-Byarlay Laura D Steele Jing Wu Jun Xie William M Muir Barry R Pittendrigh

BACKGROUND Moderate to high DDT resistance in generally associated with overexpression of multiple genes and therefore has been considered to be polygenic. However, very little information is available about the molecular mechanisms that insect populations employ when evolving increased levels of resistance. The presence of common regulatory motifs among resistance-associated genes may help to ...

Journal: :Journal of vector ecology : journal of the Society for Vector Ecology 2005
Rapeeporn Yaicharoen Rachada Kiatfuengfoo Theeraphap Chareonviriyaphap Pornpimol Rongnoparut

Five field collections of adult Aedes aegypti mosquitoes from different areas in Bangkok and Pathum Thani provinces were subjected to susceptibility tests against deltamethrin. Low levels of resistance were detected among all populations tested (RR50 = 8-17.2) compared to the susceptible strain, Bora (French Polynesia). Among the five populations tested, the BKH (Bang Khen, Bangkok) and PSC (Ph...

2010
Nelson Cuamba John C. Morgan Helen Irving Andrew Steven Charles S. Wondji

BACKGROUND Although Anopheles funestus is difficult to rear, it is crucial to analyse field populations of this malaria vector in order to successfully characterise mechanisms of insecticide resistance observed in this species in Africa. In this study we carried out a large-scale field collection and rearing of An. funestus from Mozambique in order to analyse its susceptibility status to insect...

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