Malaria Vector Control
Malaria Vector Control - Related Videos
10:21
Population Replacement Strategies for Controlling Vector Populations and the Use of Wolbachia pipientis for Genetic Drive
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Cited by 13 •
2007
In this interview, Jason Rasgon explains the concept of genetic drive and the characteristics of an effective gene drive system. The use of the endosymbiotic bacterium, Wolbachia pipientis, as a means to spread genes through mosquito populations, is hypothesized.
15:03
Building a Better Mosquito: Identifying the Genes Enabling Malaria and Dengue Fever Resistance in A. gambiae and A. aegypti Mosquitoes
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Cited by 2 •
2007
In this interview, George Dimopoulos focuses on the physiological mechanisms used by mosquitoes to combat Plasmodium falciparum and dengue virus infections. Explanation is given for how key refractory genes, those genes conferring resistance to vector pathogens, are identified in the mosquito and how this knowledge can be used to generate transgenic mosquitoes that are unable to carry the malaria parasite or dengue virus.
09:38
Site-Directed φC31-Mediated Integration and Cassette Exchange in Anopheles Vectors of Malaria
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Cited by 3 •
2021
The protocol describes how to achieve site-directed modifications in the genome of Anopheles malaria mosquitoes using the φC31 system. Modifications described include both the integration and the exchange of transgenic cassettes in the genome of attP-bearing docking lines.
08:22
IR-TEx: An Open Source Data Integration Tool for Big Data Transcriptomics Designed for the Malaria Vector Anopheles gambiae
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Cited by 1 •
2020
IR-TEx explores insecticide resistance-related transcriptional profiles in the species Anopheles gambiae. Provided here are full instructions for using the application, modifications for exploring multiple transcriptomic datasets, and using the framework to build an interactive database for collections of transcriptomic data from any organism, generated in any platform.
17:50
Preventing the Spread of Malaria and Dengue Fever Using Genetically Modified Mosquitoes
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Cited by 10 •
2007
In this candid interview, Anthony A. James explains how mosquito genetics can be exploited to control malaria and dengue transmission. Population replacement strategy, the idea that transgenic mosquitoes can be released into the wild to control disease transmission, is introduced as well as the concept of genetic drive and the design criterion for an effective genetic drive system. The ethical considerations of releasing genetically-modified organisms into the wild are also discussed.
FAQs
Population modification acts through the mosquito’s ability to support Plasmodium: a modified mosquito can be made less competent to transmit the parasite. This links a genetic trait to transmission biology rather than simply reducing mosquito numbers. Its relevance is greatest when the trait remains effective in the target mosquito population.
Gene-drive systems are designed to spread a selected trait through mosquito populations, giving them population-level reach beyond an individual mosquito. In malaria control, the selected trait could relate to reduced competence for Plasmodium transmission. Because spread and inheritance affect many mosquitoes, evaluation must include safety and population-level effects.
Control outcomes depend on more than whether a tool is deployed. Mosquito behavior can alter contact with treated nets or sprayed surfaces, while insecticide resistance can reduce the value of conventional measures. Ecological conditions also influence larval habitat management and mosquito populations. These factors help explain why results may differ between settings.
An integrated strategy can pair insecticide-treated nets and indoor residual spraying with larval habitat management and genetic approaches. Conventional measures target mosquito survival, biting, or habitat, while population modification addresses competence for Plasmodium transmission and gene-drive systems are designed to spread selected traits. Combining these approaches supports broader disease-control planning.
Genetic approaches are relevant when researchers need to examine how mosquito traits influence Plasmodium transmission at the population level. Population modification provides a way to consider reduced transmission competence, while gene-drive systems address the potential spread of such traits. Their use adds genetic and inheritance considerations to conventional vector-control planning.
Evaluations should consider whether the intended trait affects Plasmodium transmission, how inheritance could influence its spread, and what population-level effects might follow. They should also account for mosquito behavior, insecticide resistance, and ecological conditions because these factors can alter overall effectiveness. Safety assessment is essential when traits are designed to spread through populations.