Sentences with phrase «insecticide resistance»
Conducted insecticide resistance monitoring and entomology surveys especially before and after outdoor residue spraying done for pest control.
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Martin's primary research interest is the evolution of insecticide resistance in the malaria mosquito Anopheles gambiae.
His work on aphids has broadened to examine the molecular basis of all aphid interactions with their environment, including the genetic and epigenetic factors controlling aphid polyphenism and the molecular basis of insecticide resistance.
Insecticide resistance is typically associated with alterations to the insecticidal target - site or with gene expression variation at loci involved in insecticide detoxification.
This includes Genome - Wide Association Studies (GWAS) to identify genetic loci associated with insecticide resistance and population genetic studies to describe population sub-structuring.
In order to develop field - applicable diagnostics for Vgsc CN, and as a prelude to investigating the possible association of CN with insecticide resistance, three assays were compared for their accuracy in CN estimation in this species.
The scale and scope of these data are enabling genotype - phenotype association studies to identify genetic determinants of pathogen virulence and drug / insecticide resistance, and phylogenetic studies to track the origin and spread of disease outbreaks.
The sustainability of malaria control in Africa is threatened by the rise of insecticide resistance in Anopheles mosquitoes, which transmit the disease.
Insecticide resistance in malaria vectors could presage a catastrophic rebound in disease incidence and mortality.
Insecticides are designed to kill insects and they can be very effective, although the development of insecticide resistance can affect their level of control.
Conclusions / significance: Taken together, the microsatellite and both insecticide resistance target - site markers provide evidence that in the face of intense gene flow among populations, disjunction in resistance frequencies arise due to intense local selection pressures despite an absence of insecticidal control interventions targeting Culex.
Topics this year include genomic epidemiology of the host, vector and parasite, highlighting the practical relevance of this research to global health, including anti-malarial drug resistance, insecticide resistance, vaccine design, and mechanisms of protective immunity.
Genome sequences of Anopheles gambiae sister species help to investigate insecticide resistance
The meeting explored the genomic epidemiology of the host, vector and parasite, highlighting the practical relevance of this research to global health, including antimalarial drug resistance, insecticide resistance, vaccine design, and mechanisms of protective immunity.
This new data set is a quantum leap in terms of the breadth and depth of data now available for researchers studying how the species has become such an effective transmitter of malaria, and tracking the emergence and spread of insecticide resistance.
The four genes currently shown with data are all associated with insecticide resistance (although this is not a requirement).
The results of the randomized, controlled trial are important because some public health departments in places where Zika and dengue viruses are endemic do not necessarily monitor for insecticide resistance.
The proof that this particular enzyme is also a marker for resistance to pyrethroids, gives us a further opportunity to monitor the rate of insecticide resistance and make evidence based decisions in line with national plans.»
«Even with the decline of other mosquito vectors our study shows the difficulty posed by insecticide resistance in terms of malaria elimination,» continued Professor Hemingway.
Such tools will allow control programs to detect and track resistance at an early stage in the field, which is an essential requirement to successfully tackle the growing problem of insecticide resistance in vector control.
Insecticide resistance remains a major threat to malaria control.
But Read has demonstrated that targeting older mosquitoes — those nearing the end of their reproductive lives, which are also the most likely to be disease carriers — could largely eliminate the problem of insecticide resistance.
«Largest genetic study of mosquitoes reveals spread of insecticide resistance across Africa: New intelligence to help towards campaign against malaria in Africa.»
The largest ever genetic study of mosquitoes reveals the movement of insecticide resistance between different regions of Africa and finds several rapidly evolving insecticide resistance genes.
Our study highlights the severe challenges facing public efforts to control mosquitoes and to manage and limit insecticide resistance.»
Unexpectedly, the researchers discovered many previously - unknown genetic variants within those genes that could be causing insecticide resistance.
Engineered crops might also foster insecticide resistance.
The pest is difficult to control because of the widespread occurrence of insecticide resistance.
Insecticide resistance is going to matter at a certain point, he says — «What we don't know is whether we are just approaching that point, whether it is 1 year away, or five or 10.»
INSECTICIDE resistance in malarial mosquitoes could be wiped out for good, paradoxically by using slow - killing agents.
«I think insecticide resistance is a time bomb.»
«Nobody dreamt that insecticide resistance would spread the way it has spread throughout Africa.»
Noting that insects have been evolving resistance to natural plant defenses for millions of years and that this year marks the 100th anniversary of the first reported case of insecticide resistance, he concludes, «Finding ways to delay resistance is a never - ending challenge with any pest management approach.»
Not exact matches
What I have described is a thoroughgoing neo-Darwinian interpretation of the evolution of resistance to an insecticide by insects.
In addition, planthoppers rapidly develop resistance to insecticides; in some parts of China, this resistance can reach 200-fold.
The focus on bio-rational products is to ensure minimum pest resistance by the army worms, which is higher with the use of synthetic insecticides.
Bedbugs are evolving resistance to a common insecticide that once killed them.
In theory, spraying two different types of insecticide at once postpones resistance, as bugs that resist one type are killed by the other.
A study found that as many as 80 percent of the bugs are immune to insecticides in over-the-counter shampoos, and resistance will only increase.
But when the massive rollout of insecticide - treated bed nets began in Africa in the early 2000s — more than a billion have been distributed — little thought was given to resistance, says Maureen Coetzee, director of the Wits Research Institute for Malaria at the University of the Witwatersrand in Johannesburg, South Africa.
The Colorado potato beetle has gone through whole sequences of insecticides and developed resistance.
However, this strategy is often ineffective because the pest has developed resistances against nearly all insecticides.
Mosquitoes are also increasingly developing resistance to common insecticides.
As mosquitoes develop resistance to pyrethroid insecticides, researchers are forced to look for alternatives
When they inserted those genes into crop genomes, through a technique called recombinant DNA, the plants were able to produce the protein for bug resistance on their own, eliminating the need to spray insecticide.
Malaria is transmitted by mosquitoes and rising resistance to insecticides is hampering efforts to control the disease.
Professor Martin Donnelly, a corresponding author from the Liverpool School of Tropical Medicine and Honorary Faculty at the Wellcome Trust Sanger Institute, said: «We know that mosquito populations are rapidly evolving resistance to insecticides, which is a serious threat to the future of malaria control in Africa.
Public health measures in Africa such as insecticide - treated bed nets and insecticide - spraying have helped reduce the numbers of malaria cases since 2000, but many mosquitoes have evolved resistance to insecticides.
While the main malaria vector in South Africa, Anopheles funestus, is susceptible to DDT, a secondary vector, A. arabiensis, has developed resistance to DDT and other insecticides.
«DDT resistance in Africa as well as several other parts of the world has been acquired because of massive use of these insecticides for crop protection,» Guillet says.