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Semi-field assessment of the Gravid Aedes Trap (GAT) with the aim of controlling Aedes (Stegomyia) aegypti populations
- Source :
- PLoS ONE, Vol 16, Iss 4, p e0250893 (2021), PLoS ONE
- Publication Year :
- 2021
- Publisher :
- Public Library of Science (PLoS), 2021.
-
Abstract
- The mosquito Aedes aegypti is the main vector of arboviroses and current approaches to control this vector are not sufficiently effective. Adult traps, such as the BG-Sentinel (BGS), have been successfully used for mosquito surveillance and can also suppress vector populations. A new “passive” trap for gravid Ae. aegypti (Gravid Aedes Trap—GAT) has been shown efficient for Aedes collection and suppress Ae. albopictus populations using mass trapping techniques. Here the GAT was evaluated for the first time as a new tool to control Ae. aegypti in semi-field conditions using simulated outdoor environments (SOE). Two identical large screened chambers inside of a SOE containing different numbers and sizes of artificial breeding sites were used to assess the trapping efficiency of the GAT. One hundred mosquitoes were released into the chambers, and recapture rates evaluated after 48h. The parity status of the captured mosquitoes was also recorded. The number of eggs laid, and breeding productivity were also monitored when using different numbers and sizes of breeding sites. The BGS trap was used here as a control (gold standard) trap to compare capture rates to those of the GAT. The GAT recaptured between 50–65% of the mosquitoes independent of the number and sizes of the breeding sites in the SOEs, whereas the BGS recaptured 60–82% of the females. Both traps showed similar results regarding to the parity status of recaptured mosquitoes. Our results confirmed the effectiveness of GAT for the capture of adult female Ae. aegypti in simulated field environments. The BGS trap recaptured gravid Ae. aegypti before egg-laying in different sizes and number of breading sites, whereas the oviposition activity occurred prior to recapture mosquitoes in the GAT. Based on the results, we believe that GAT is a promising candidate for mass-trapping intervention in urban settings, but a source reduction intervention should be made prior trap deployment. Therefore, we suggest future field studies to confirm the use of GAT as a complementary tool in vector control activities.
- Subjects :
- 0301 basic medicine
Veterinary medicine
Viral Diseases
Mosquito Control
genetic structures
Physiology
Oviposition
Eggs
Social Sciences
Breeding
Disease Vectors
Mosquitoes
0302 clinical medicine
Medical Conditions
Aedes
Reproductive Physiology
Medicine and Health Sciences
Psychology
Multidisciplinary
Mosquito Nets
biology
Animal Behavior
Field assessment
Eukaryota
Trap (plumbing)
Body Fluids
Insects
Infectious Diseases
Blood
Arboviral Infections
Viruses
Medicine
Female
Anatomy
Research Article
Arthropoda
Science
030231 tropical medicine
Aedes aegypti
Aedes Aegypti
Animal Sexual Behavior
03 medical and health sciences
Animals
Computer Simulation
Stegomyia aegypti
Behavior
Adult female
fungi
Organisms
Biology and Life Sciences
biology.organism_classification
Invertebrates
Insect Vectors
Species Interactions
030104 developmental biology
Vector (epidemiology)
Zoology
Entomology
Arboviruses
Subjects
Details
- Language :
- English
- ISSN :
- 19326203
- Volume :
- 16
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- PLoS ONE
- Accession number :
- edsair.doi.dedup.....6350a3edd8ea6f195e543f8f51a97c79