scholarly journals Effectiveness of Temephos and Source Reduction Control For Aedes Aegypti Field Population In Makassar City, Indonesia

2019 ◽  
Author(s):  
Hasanuddin Ishak
Keyword(s):  
Aedes Aegypti ◽  
Field Population ◽  
Source Reduction

scholarly journals Suppression of a Field Population of Aedes aegypti in Brazil by Sustained Release of Transgenic Male Mosquitoes

2015 ◽  
Vol 9 (7) ◽  
pp. e0003864 ◽  
Author(s):  
Danilo O. Carvalho ◽  
Andrew R. McKemey ◽  
Luiza Garziera ◽  
Renaud Lacroix ◽  
Christl A. Donnelly ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Sustained Release ◽  
Field Population ◽  
Male Mosquitoes ◽  
Transgenic Male

scholarly journals Status kerentanan Ae. aegypti terhadap beberapa golongan insektisida di Provinsi Kalimantan Selatan

2019 ◽  
Vol 3 (2) ◽  
pp. 56-62
Author(s):  
Nita Rahayu ◽  
Sri Sulasmi ◽  
Yuniarti Suryatinah
Keyword(s):  
Public Health ◽  
Aedes Aegypti ◽  
Field Population ◽  
Susceptibility Test ◽  
Insecticide Susceptibility ◽  
F2 Generation ◽  
Chemical Groups ◽  
Aegypti Population

Insecticide resistence study to DHF vector Aedes aegypti was carried out in Kalimantan Selatan Propince. The objective of this study was to map the insecticide susceptibility of Aedes aegypti population to the three chemical groups of insecticide used in public health, in Kalimantan Selatan. Laboratory-reared. F2 generation of  field population of  Aedes aegypti from nine and three Municipalities in Kalimantan Selatan Propinces were used respectively. The susceptibility test were carried qut using impregnated paper base on WHO recommended doses which are 0.8% Malathion and 0,05% cyipermethrin, 0,05% Lambdasihalotrin. The results suggested that population of Aedes aegypti collected from nine municipalities, regencies/cities in Kalimantan Selatan Propince were resistant to Malathion 0.8%, Lambdasihalotrin 0,03% and cypermethrin 0.05%, including Deltamethrin 0.025%. It is important to rotate the insecticides which are used for fogging, especially Malathion.

scholarly journals Citywide Control of Aedes aegypti (Diptera: Culicidae) during the 2016 Zika Epidemic by Integrating Community Awareness, Education, Source Reduction, Larvicides, and Mass Mosquito Trapping

2019 ◽  
Vol 56 (4) ◽  
pp. 1033-1046 ◽  
Author(s):  
Roberto Barrera ◽  
Angela Harris ◽  
Ryan R Hemme ◽  
Gilberto Felix ◽  
Nicole Nazario ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Mixed Model ◽  
Linear Mixed Model ◽  
Scale Up ◽  
Virus Transmission ◽  
Medium Size ◽  
Mass Trapping ◽  
Source Reduction ◽  
Community Awareness ◽  
Cluster Randomized

Abstract This investigation was initiated to control Aedes aegypti and Zika virus transmission in Caguas City, Puerto Rico, during the 2016 epidemic using Integrated Vector Management (IVM), which included community awareness and education, source reduction, larviciding, and mass-trapping with autocidal gravid ovitraps (AGO). The epidemic peaked in August to October 2016 and waned after April 2017. There was a preintervention period in October/November 2016 and IVM lasted until August 2017. The area under treatment (23.1 km2) had 61,511 inhabitants and 25,363 buildings. The city was divided into eight even clusters and treated following a cluster randomized stepped-wedge design. We analyzed pools of female Ae. aegypti adults for RNA detection of dengue (DENV), chikungunya (CHIKV), and Zika (ZIKV) viruses using 360 surveillance AGO traps every week. Rainfall, temperature, and relative humidity were monitored in each cluster. Mosquito density significantly changed (generalized linear mixed model; F8, 14,588 = 296; P < 0.001) from 8.0 ± 0.1 females per trap per week before the intervention to 2.1 ± 0.04 after the percentage of buildings treated with traps was 60% and to 1.4 ± 0.04 when coverage was above 80%. Out of a total 12,081 mosquito pools, there were 1 DENV-, 7 CHIKV-, and 49 ZIKV-positive pools from October 2016 to March 2017. Afterward, we found only one positive pool of DENV in July 2017. This investigation demonstrated that it was possible to scale up effective Ae. aegypti control to a medium-size city through IVM that included mass trapping of gravid Ae. aegypti females.

scholarly journals Sterile Insect Technique: Successful Suppression of an Aedes aegypti Field Population in Cuba

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 469
Author(s):  
René Gato ◽  
Zulema Menéndez ◽  
Enrique Prieto ◽  
Rafael Argilés ◽  
Misladys Rodríguez ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Untreated Control ◽  
Sterile Insect Technique ◽  
Wild Population ◽  
Pilot Trial ◽  
Specific Treatment ◽  
Public Health Problem ◽  
Field Population ◽  
Mosquito Vector ◽  
Treatment Area

Dengue virus infections are a serious public health problem worldwide. Aedes aegypti is the primary vector of dengue in Cuba. As there is no vaccine or specific treatment, the control efforts are directed to the reduction of mosquito populations. The indiscriminate use of insecticides can lead to adverse effects on ecosystems, including human health. The sterile insect technique is a species-specific and environment-friendly method of insect population control based on the release of large numbers of sterile insects, ideally males only. The success of this technique for the sustainable management of agricultural pests has encouraged its evaluation for the population suppression of mosquito vector species. Here, we describe an open field trial to evaluate the effect of the release of irradiated male Ae. aegypti on a wild population. The pilot trial was carried out in a suburb of Havana and compared the mosquito population density before and after the intervention, in both untreated control and release areas. The wild population was monitored by an ovitrap network, recording frequency and density of eggs as well as their hatch rate. A significant amount of sterility was induced in the field population of the release area, as compared with the untreated control area. The ovitrap index and the mean number of eggs/trap declined dramatically after 12 and 5 weeks of releases, respectively. For the last 3 weeks, no eggs were collected in the treatment area, clearly indicating a significant suppression of the wild target population. We conclude that the sterile males released competed successfully and induced enough sterility to suppress the local Ae. aegypti population.

scholarly journals Evaluation of an ivermectin-based attractive targeted sugar bait (ATSB) against Aedes aegypti in Tanzania.

2022 ◽  
Vol 7 ◽  
pp. 4
Author(s):  
Frank Sandra Chelestino Tenywa ◽  
Jeremiah John Musa ◽  
Revocatus Musyangi Musiba ◽  
Johnson Kyeba Swai ◽  
Ahmad Bakar Mpelepele ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Incidence Rate Ratio ◽  
P Value ◽  
Sugar Solution ◽  
Source Reduction ◽  
Field System ◽  
Solution Treated ◽  
Labour Intensity ◽  
Arboviral Diseases ◽  
Vector Borne

Background The control of vector borne arboviral diseases such as Dengue is mainly achieved by reducing human-vector contact and controlling the vectors through source reduction and environmental management. These measures are constrained by labour intensity, insecticide resistance and pro-active community participation. The current study intended to develop and test an ivermectin-based attractive-targeted sugar bait (ATSB) against Aedes aegypti. Methods The 48hour lethal concentration (LC90) of ivermectin against Ae. aegypti was determined through serial dilution experiment where five 30cm x 30cm x 30cm cages were set; into each, a 10% sugar solution treated with ivermectin were introduced. 40 Ae. aegypti were released into each cage and observed for mortality after 4, 8, 24 and 48 hours. The ivermectin-based ATSB was evaluated in a semi field system where ATSB and attractive sugar bait (ASB) were deployed into each compartment of the semi field and 100 female Ae. aegypti were released every day and recaptured the next day through human land catch and Bio-gent sentinel trap. The developed and semi-field tested ATSB was further tested in the field by deploying them in garages. Results The ivermectin 48hr LC90 of male and female Ae. aegypti was found to be 0.03% w/v. In the semi field system, the ATSB significantly reduced a free-flying population of Ae. aegypti within 24 hours (incidence rate ratio (IRR) = 0.62; [95% confidence interval (95%CI); 0.54-0.70] and p-value < 0.001). However, in the field, the ATSBs required the addition of yeast as a carbon dioxide source to efficiently attract Ae. aegypti mosquitoes to feed. Conclusion Ivermectin is an active ingredient that can be used in an ATSB for Ae. aegypti depopulation. However, further research is needed to improve the developed and tested ATSB to compete with natural sources of sugar in a natural environment.

scholarly journals A Review of the Control of Aedes aegypti (Diptera: Culicidae) in the Continental United States

2020 ◽  
Author(s):  
Bethany L McGregor ◽  
C Roxanne Connelly
Keyword(s):  
Aedes Aegypti ◽  
Mosquito Control ◽  
Effective Control ◽  
Source Reduction ◽  
Viral Pathogens ◽  
Control Programs ◽  
Lack Of Information ◽  
Dengue Outbreaks ◽  
Nuisance Species ◽  
Alternative Techniques

Abstract Aedes aegypti (L) is an anthropophilic mosquito involved in the transmission of a variety of viral pathogens worldwide including dengue, chikungunya, yellow fever, and Zika viruses. This species, native to Africa, is well established in the continental U.S. (CONUS) and occasionally contributes to localized outbreaks of viral diseases. In the last seven decades, mosquito control programs in the CONUS have been focused on vectors of eastern equine encephalitis, St. Louis encephalitis, and West Nile viruses, as well as nuisance species. Aedes aegypti receives little control focus except during outbreak periods, which has led to a lack of information on appropriate and effective control options targeting Ae. aegypti in the CONUS. As such, in the event of an Ae. aegypti-borne arboviral outbreak in the CONUS, there are limited evidence-based control recommendations or protocols in place. Autochthonous outbreaks of Ae. aegypti-borne pathogens have occurred recently in the CONUS, including dengue outbreaks in 2010 and 2013, a chikungunya outbreak in 2014, and the 2016 outbreak of Zika virus. The increasing frequency of Ae. aegypti-borne outbreaks necessitates increased attention and research on control of this species to prevent and mitigate future outbreaks. This review consolidates and synthesizes the available literature on control of Ae. aegypti, specifically within the CONUS, focusing on data generated through operational applications as well as field and semifield experiments. The purpose of this review is to identify and highlight areas where additional research is needed. The review covers chemical control and insecticide resistance, biological control, source reduction, trapping, and alternative techniques.

scholarly journals Aedes larval bionomics and implications for dengue control in the paradigmatic Jaffna peninsula, northern Sri Lanka

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Sinnathamby N. Surendran ◽  
Tibutius T. P. Jayadas ◽  
Vaikunthavasan Thiruchenthooran ◽  
Selvarajah Raveendran ◽  
Annathurai Tharsan ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Aedes Aegypti ◽  
Habitat Preferences ◽  
Habitat Characteristics ◽  
Coastal Zones ◽  
Source Reduction ◽  
Preimaginal Development ◽  
Preimaginal Stages ◽  
Reduction Methods ◽  
Dengue Control

Abstract Background The larval bionomics of Aedes across the Jaffna peninsula in northern Sri Lanka was investigated to obtain information needed for developing more effective larval source reduction measures to control endemic arboviral diseases. Methods The habitats of preimaginal stages of Aedes mosquitoes were surveyed, and ovitrap collections were carried out in densely populated areas of the Jaffna peninsula. Aedes larval productivities were analysed against habitat characteristics, rainfall and dengue incidence. Adults emerging from collected larvae were tested for dengue virus (DENV). Results Only Aedes aegypti, Ae. albopictus and Ae. vittatus were identified in the field habitat collections and ovitraps. Aedes aegypti was the predominant species in both the field habitat and ovitrap collections, followed by Ae. albopictus and small numbers of Ae. vittatus. Tires and open drains were the preferred field habitats for Ae. aegypti, although larval productivity was higher in discarded plastic containers. The three Aedes species differed in field habitat preferences. Concomitant presence of the three Aedes species was observed in the field habitats and ovitraps. Larval productivities were inversely correlated with the salinity of the field habitat. Rainfall in the preceding month significantly correlated with larval productivity in the field habitats. DENV serotype 2 was detected in Ae. aegypti collected from ovitraps in the city of Jaffna. High Breteau, House and Container indices of 5.1, 5.1 and 7.9%, respectively, were observed in the field habitat surveys and ovitrap indices of up to 92% were found in Jaffna city. Conclusions Aedes larval indices in populated areas of the peninsula showed a high potential for dengue epidemics. Unacceptable littering practices, failure to implement existing dengue control guidelines, vertical transmission of DENV in vector mosquitoes and preimaginal development in brackish water and open surface drains, as well as in domestic wells that provide potable water, are serious constraints to the current Aedes larval source reduction methods used to control dengue in the Jaffna peninsula. Similar shortcomings in arboviral disease control are likely present in other resource-constrained tropical coastal zones worldwide.

scholarly journals Disrupting female flight in the vector Aedes aegypti

2019 ◽  
Author(s):  
Sarah O’Leary ◽  
Zach N. Adelman
Keyword(s):  
Aedes Aegypti ◽  
Flight Muscle ◽  
Population Control ◽  
Gene Knockout ◽  
Control Strategies ◽  
Specific Gene ◽  
Source Reduction ◽  
Guide Rnas ◽  
Control Flight ◽  
Female Specific

AbstractAedes aegypti is a vector of dengue, chikungunya, and Zika viruses. Current vector control strategies such as community engagement, source reduction, and insecticides have not been sufficient to prevent viral outbreaks. Thus, interest in novel strategies involving genetic engineering is growing. Female mosquitoes rely on flight to mate with males and obtain a bloodmeal from a host. We hypothesized that knockout of genes specifically expressed in female mosquitoes associated with the indirect flight muscles would result in a flightless female mosquito. With the CRISPR-Cas9 system, we performed embryonic microinjections of Cas9 protein and guide RNAs specific to genes hypothesized to control flight in mosquitoes, and have obtained genetic knockouts in several genes specifically expressed in the flight-muscle, including those specific to female flight muscle. Analysis of the phenotype of these female-specific gene knockout mutants resulted in flightless females and flying males. While further assessment is required, this work lays the groundwork for a mechanism of population control that is female-specific for the Ae. aegypti vector.

Sign in / Sign up

Export Citation Format

Share Document