نتایج جستجو برای: mosquito vectors

تعداد نتایج: 81362  

Journal: :Molecular Biology and Evolution 2008
Deirdre A. Joy Lilia Gonzalez-Ceron Jane M. Carlton Amy Gueye Michael Fay Thomas F. McCutchan Xin-zhuan Su

Plasmodium vivax in southern Mexico exhibits different infectivities to 2 local mosquito vectors, Anopheles pseudopunctipennis and Anopheles albimanus. Previous work has tied these differences in mosquito infectivity to variation in the central repeat motif of the malaria parasite's circumsporozoite (csp) gene, but subsequent studies have questioned this view. Here we present evidence that P. v...

Journal: :International Journal of Health Geographics 2008
Li Li Ling Bian Guiyun Yan

BACKGROUND A sharp rise in the malaria mortality rate has been observed recently in western Kenya. Malaria is transmitted by mosquito vectors. Malaria control strategies can be more successful if the distribution and abundance of mosquito vectors is predicted. However, how mosquito vectors are distributed in space remain poor understood, and this question is rarely studied using spatial methods...

Journal: :The American journal of tropical medicine and hygiene 2005
Hyun-Woo Park Dennis K Bideshi Margaret C Wirth Jeffrey J Johnson William E Walton Brian A Federici

An urgent need exists for new agents to control mosquito vectors of disease. Mosquito larvicides based on the bacteria Bacillus thuringiensis subsp. israelensis (Bti) or B. sphaericus (Bs) are effective in many habitats, but use is limited by their high cost. Moreover, mosquito resistance evolves rapidly to Bs where it is used intensively. The efficacy of these bacteria is due to a binary prote...

Journal: :journal of arthropod-borne diseases 0
a saghafipour qom provincial health center, qom university of medical sciences, qom, iran mr abai department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran b farzinnia school of public health, qom university of medical sciences, qom, iran r nafar qom provincial health center, qom university of medical sciences, qom, iran h ladonni department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran s azari-hamidian school of health, guilan university of medical sciences, rasht, iran

background: there is very little information about the mosquito fauna of qom province, central iran. by now only three species; anopheles claviger , an. multicolor , and an. superpictus have been reported in the province. to study mosquito fauna and providing a primary checklist, an investigation was carried out on a collection of mosquitoes in this province. methods: to study the mosquito (dip...

2015
Ayman Khattab Marta Barroso Tiera Miettinen Seppo Meri

Hematophagous vectors strictly require ingesting blood from their hosts to complete their life cycles. Exposure of the alimentary canal of these vectors to the host immune effectors necessitates efficient counteractive measures by hematophagous vectors. The Anopheles mosquito transmitting the malaria parasite is an example of hematophagous vectors that within seconds can ingest human blood doub...

Journal: :Medical Entomology and Zoology 1951

2012
Kumar S. Sampath H. P. Puttaraju

BACKGROUND & OBJECTIVES Bio-manipulation technique is of primary importance during the development of transgenic mosquitoes. The study describes the variable factors that influence the viability of medically important mosquito vectors during microinjection. METHODS Three mosquito vectors belonging to the genus Aedes, Anopheles and Culex were microinjected at different developmental stages of ...

Resistance to insecticides has persuaded researchers to find new methods to control Culex quinquefasciatus proliferation. Plants may be a source of alternative agents for mosquito control due to ever-growing insecticide resistance in mosquito vectors and environmental imbalance caused by synthetic insecticides. The present study was intended to study the larvicidal activity of selected Cyathea ...

2017
Gerry F Killeen Samson S Kiware Fredros O Okumu Marianne E Sinka Catherine L Moyes N Claire Massey Peter W Gething John M Marshall Carlos J Chaccour Lucy S Tusting

Protecting individuals and households against mosquito bites with long-lasting insecticidal nets (LLINs) or indoor residual spraying (IRS) can suppress entire populations of unusually efficient malaria vector species that predominantly feed indoors on humans. Mosquitoes which usually feed on animals are less reliant on human blood, so they are far less vulnerable to population suppression effec...

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