scholarly journals Pyrethroid exposure altersAnopheles albimanusmicrobiota and resistant mosquitoes harbor more insecticide-metabolizing bacteria

2019 ◽  
Author(s):  
Nsa Dada ◽  
Juan C. Lol ◽  
Ana Cristina Benedict ◽  
Francisco López ◽  
Mili Sheth ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Malaria Vector ◽  
Bacterial Communities ◽  
Pyrethroid Resistance ◽  
Malaria Vector Control ◽  
Anopheles Albimanus ◽  
Larval Cuticle ◽  
Specific Effects ◽  
First Time ◽  
Time Type

AbstractA deeper understanding of the mechanisms underlying insecticide resistance is needed to mitigate its threat to malaria vector control. Building upon our earlier identified associations between mosquito microbiota and insecticide resistance, we demonstrate for the first time, type-specific effects of pyrethroid exposure on internal and cuticle surface bacteria in adult progeny of field-collectedAnopheles albimanus. In contrast, larval cuticle surface—but not internal—bacteria were affected by pyrethroid exposure. Being over five-folds more abundant in pyrethroid resistant adults, as compared to susceptible or non-insecticide-exposed mosquitoes,Klebsiella(alphacypermethrin),PantoeaandAsaia(permethrin) were identified as potential markers of pyrethroid resistance inAn. albimanus. We also show for the first time thatAn. albimanuslarvae and adult cuticles harbor more diverse bacterial communities than their internal microbial niches. Our findings indicate insecticide selection pressures on mosquito microbiota, and support the hypothesis of an undescribed microbe-mediated mechanism of insecticide metabolism in mosquitoes.

scholarly journals Current status of insecticide resistance in malaria vectors in the Asian countries: a systematic review

F1000Research ◽  
2022 ◽  
Vol 10 ◽  
pp. 200
Author(s):  
Dewi Susanna ◽  
Dian Pratiwi
Keyword(s):  
Systematic Review ◽  
Insecticide Resistance ◽  
Vector Control ◽  
Malaria Vector ◽  
Pyrethroid Resistance ◽  
Current Trend ◽  
Current Status ◽  
Malaria Vectors ◽  
Malaria Vector Control ◽  
Publication Date

Background: The application of insecticides for malaria vector control has led to a global problem, which is the current trend of increased resistance against these chemicals. This study aimed to review the insecticide resistance status was previously determined in Asia and how to implement the necessary interventions. Moreover, the implications of resistance in malaria vector control in this region were studied. Methods: This systematic review was conducted using a predefined protocol based on PRISMA-retrieved articles from four science databases, namely ProQuest, Science Direct, EBSCO, and PubMed in the last ten years (2009 to 2019). The searching process utilized four main combinations of the following keywords: malaria, vector control, insecticide, and Asia. In ProQuest, malaria control, as well as an insecticide, were used as keywords. The following criteria were included in the filter, namely full text, the source of each article, scholarly journal, Asia, and publication date as in the last ten years. Results: There were 1408 articles retrieved during the initial search (ProQuest=722, Science Direct=267, EBSCO=50, PubMed=285, and Scopus=84). During the screening, 27 articles were excluded because of duplication, 1361 based on title and abstract incompatibility with the inclusion criteria, and 20 due to content differences. In the final screening process, 15 articles were chosen to be analyzed. From the 15 articles, it is known that there was organochlorine (DDT), organophosphate (malathion), and pyrethroids resistance in several Anopheles species with a less than 80% mortality rate. Conclusion: This review found multiple resistance in several Anopheles includes resistance to pyrethroid. The reports of pyrethroid resistance were quite challenging because it is considered effective in the malaria vector control. Several countries in Asia are implementing an insecticide resistance management (IRM) strategy against malaria vectors following the Global Plan for IRM.

scholarly journals Temporal and spatial trends in insecticide resistance in Anopheles arabiensis in Sudan: outcomes from an evaluation of implications of insecticide resistance for malaria vector control

2018 ◽  
Vol 11 (1) ◽  
Author(s):  
Bashir Adam Ismail ◽  
Hmooda Toto Kafy ◽  
Jihad Eltaher Sulieman ◽  
Krishanthi Subramaniam ◽  
Brent Thomas ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Vector Control ◽  
Malaria Vector ◽  
Anopheles Arabiensis ◽  
Malaria Vector Control ◽  
Spatial Trends ◽  
Temporal And Spatial ◽  
Temporal And Spatial Trends

scholarly journals First detection of a Vssc allele V1016G conferring a high level of insecticide resistance in Aedes albopictus collected from Europe (Italy) and Asia (Vietnam), 2016: a new emerging threat to controlling arboviral diseases

2019 ◽  
Vol 24 (5) ◽  
Author(s):  
Shinji Kasai ◽  
Beniamino Caputo ◽  
Takashi Tsunoda ◽  
Tran Chi Cuong ◽  
Yoshihide Maekawa ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Aedes Albopictus ◽  
Disease Transmission ◽  
Pyrethroid Resistance ◽  
Virus Disease ◽  
Mosquito Species ◽  
Geographical Regions ◽  
Arboviral Diseases ◽  
High Level ◽  
First Time

Introduction Aedes albopictus (Skuse) is an important vector of arboviral diseases, including dengue, chikungunya and Zika virus disease. Monitoring insecticide resistance and mechanisms by which the mosquito develops resistance is crucial to minimise disease transmission. Aim To determine insecticide resistance status and mechanisms in Ae. albopictus from different geographical regions. Methods We sampled 33 populations of Ae. albopictus from Asia, Europe and South America, and tested these for susceptibility to permethrin, a pyrethroid insecticide. In resistant populations, the target site for pyrethroids, a voltage-sensitive sodium channel (Vssc) was genotyped. Three resistant sub-strains, each harbouring a resistance allele homozygously, were established and susceptibilities to three different pyrethroids (with and without a cytochrome P450 inhibitor) were assayed. Results Most populations of Ae. albopictus tested were highly susceptible to permethrin but a few from Italy and Vietnam (4/33), exhibited high-level resistance. Genotyping studies detected a knockdown resistance (kdr) allele V1016G in Vssc for the first time in Ae. albopictus. Two previously reported kdr alleles, F1534C and F1534S, were also detected. The bioassays indicated that the strain homozygous for the V1016G allele showed much greater levels of pyrethroid resistance than other strains harbouring F1534C or F1534S. Conclusion The V1016G allele was detected in both Asian and Italian Ae. albopictus populations, thus a spread of this allele beyond Italy in Europe cannot be ruled out. This study emphasises the necessity to frequently and regularly monitor the V1016G allele in Ae. albopictus, particularly where this mosquito species is the main vector of arboviruses.

scholarly journals Multiple Insecticide Resistance: An Impediment to Insecticide-Based Malaria Vector Control Program

PLoS ONE ◽  
2011 ◽  
Vol 6 (1) ◽  
pp. e16066 ◽  
Author(s):  
Delenasaw Yewhalaw ◽  
Fantahun Wassie ◽  
Walter Steurbaut ◽  
Pieter Spanoghe ◽  
Wim Van Bortel ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Vector Control ◽  
Malaria Vector ◽  
Control Program ◽  
Malaria Vector Control ◽  
Vector Control Program

scholarly journals Pyrethroid Resistance in Anopheles gambiae, in Bomi County, Liberia, Compromises Malaria Vector Control

PLoS ONE ◽  
2012 ◽  
Vol 7 (9) ◽  
pp. e44986 ◽  
Author(s):  
Emmanuel A. Temu ◽  
Caroline Maxwell ◽  
Godwil Munyekenye ◽  
Annabel F. V. Howard ◽  
Stephen Munga ◽  
...  
Keyword(s):  
Vector Control ◽  
Anopheles Gambiae ◽  
Malaria Vector ◽  
Pyrethroid Resistance ◽  
Malaria Vector Control
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