Biogents – Science for Your Protection –

BG-GAT for professionals – a passive tool for mass trapping

Biogents’ passive BG-GAT (Gravid Aedes Trap) attracts female Aedes (Stegomyia) mosquitoes with water and oviposition cues. These mosquito species are vectors of diseases like dengue fever, Zika, chikungunya, or yellow fever. Mosquitoes trying to find an oviposition site enter the transparent chamber through the black funnel on top of the trap, and get into contact with killing agents. The transparent chamber makes it difficult for the mosquitoes to escape, and the black mesh net provides a barrier between mosquitoes and the infused water. Dead mosquitoes can be collected.

The BG-GAT is ideal for surveillance programs of Asian tiger and dengue mosquitoes, or for mass trapping in combination with suction traps >

The BG-GAT oviposition trap

  • is affordable
  • is easy to set up
  • needs neither a power supply
  • nor CO2

The BG-GAT trap was developed by Dr. Á. E. Eiras from the Universidade Federal de Minas Gerais, Belo Horizonte, Brazil and by Dr. S. A. Ritchie from the James Cook University, Cairns, Queensland, Australia. Biogents produces and distributes the trap under an exclusive license agreement with both universities.

Examples of projects where the BG-GAT is ideal to be applied

  • surveillance programs for the Asian tiger mosquito, Aedes (Stegomyia) albopictus, or the Dengue mosquito, Aedes (Stegomyia) aegypti
  • control of these mosquitoes through mass trapping with the BG-GAT in combination with suction traps
  • projects in areas with limited electricity

Killing agent

To kill the mosquitoes in the BG-GAT trap, a killing agent (e.g., canola oil, unscented baby oil, or a residual surface spray insecticide) can be applied to the inner wall of the translucent chamber:

1) A thin film of oil can be wiped on the inside of the translucent chamber. The oil “wets“ the wings of the mosquitoes, and makes flight impossible.
We recommend a neutral oil like canola, vegetable, or unscented baby oil. You can also use the aerosolised versions of these oils. Avoid using light or flavored oils such as olive oil, sesame oil, and walnut oil as they may inhibit entry, see publication Heringer et al., 2016 > and Johnson et al., 2016  >

2) Alternatively, you can use residual surface spray insecticides that will kill mosquitoes through contact (e.g., Mortein Outdoor Barrier Surface Spray, imiprothrin 0.3 g/kg, and 0.6 g/kg deltamethrin Reckitt Benckiser Pty. Ltd.).

3) Another option is to place a sticky card into the transparent chamber.

Do not spray the black bucket or entry funnel. This will repel mosquitoes! Retreat the translucent chamber monthly.

Please note:
The smell of the new plastic of the traps might initially have repellent effects on the mosquitoes. Therefore, we recommend to store the traps with some water outside, or two weeks before using them in the field to get rid of the smell.

Features

  • standing trap, consisting of robust plastic
  • weight: 600 g, dimension: 27 x 38 cm
  • no power supply needed

Contents

Contents of the BG-GAT (Gravid Aedes Trap)

1 catch bag, 1 funnel, 1 transparent chamber, 1 black bucket, 1 ring

Positioning is an important factor for the catch rates. Test different locations!

The black colour of the BG-GAT attracts mosquitoes from some distance. So, the trap needs to be placed where it is readily visible, but protected from rain. Please do not hide the BG-GAT in the bushes!

Below, find the latest publications and news on the BG-GAT. Here, we publish publications about the BG-GAT, documents with the experiences of the developers in the field, and planned updates of the trap:
——————————————————————————————–
December 2016
Oral Conference Presentation:
Rose et al. (2016) 2+1: Why the combination of two passive and one active mosquito trap may well be a control tool worthy of attention. International Workshop on “Insecticide resistance in vectors of emerging arbovectors: Challenge and prospects for vector control”, Rio de Janeiro: Workshop Program & Abstracts, p.56
PDF Download the presentation >
———————————————————————————————
September 2016
Publication:
Johnson et al. (2016) Field comparisons of the Gravid Aedes Trap (GAT) and BG-Sentinel trap for monitoring Aedes albopictus populations and notes on indoor GAT collections in Vietnam. Journal of Medical Entomology, Oct 5. pii: tjw166.
PDF Download the publication >
———————————————————————————————
May 2016
Publication:
Heringer et al. (2016) Evaluation of Alternative Killing Agents for Aedes aegypti in the Gravid Aedes Trap (GAT). Journal of Meduical Entomology 53(4):873-879.
PDF Download the publication >
———————————————————————————————
March 2016
Brian Johnson and Scott Ritchie (James Cook University, Cairns, Australia) describe field trials of the BG-GAT trap, Singapore sticky and CDC AGO traps in 2014 – 2015.
PDF Download the presentation >
———————————————————————————————
October 2015
Brian Johnson and Scott Ritchie (James Cook University, Cairns, Australia) put a 484 Hz sound generator into a BG-GAT trap and thus turned it into a trap that captures male Aedes aegypti.
More information here: Science Daily: “Love hertz. Researchers find the perfect pitch to attract male mosquitoes.”
Original publication: B.J. Johnson & S.A. Ritchie (2015) The Siren’s Song: Exploitation of Female Flight Tones to Passively Capture Male Aedes aegypti (Diptera: Culicidae). Journal of Medical Entomology, Oct. 26. DOI: http://dx.doi.org/10.1093/jme/tjv165
———————————————————————————————
October 2014
Problems and Solution suggestions, reported by Scott Ritchie. Based on this latest report of Scott Ritchie we recommend to store the traps outside for two weeks before using them in the field to get rid of the repellent smell of the new plastic. We will further develop a net that can be easier attached with elastic instead of the mounting ring. New nets will come in the beginning of 2015 and will be sent to our customers. In the meantime a triangle cut in the top of the transparent chamber will help you to easier fix the mounting ring over the net and chamber. The insecticide nets can just be placed inside the transparent chamber instead of straining them over the chamber. This seems also to be a good alternative.
———————————————————————————————
September 2014
Publication:
A.E. Eiras, T.S. Buhagiar & S.A. Ritchie (2014) Development of the Gravid Aedes Trap for the Capture of Adult Female Container–Exploiting Mosquitoes (Diptera: Culicidae). Journal of Medical Entomology 51(1): 200-209
PDF Download the publication >
———————————————————————————————
April 2014
PDF Update on Gravid Aedes Trap: alternative pesticides >
———————————————————————————————
January 2014
Publication:
S.A. Ritchie, T.S. Buhagiar, M. Townsend, A. Hoffmann, A.F. van den Hurk, J.  McMahon & A.E. Eiras (2014) Field Validation of the Gravid Aedes Trap (GAT) for Collection of Aedes aegypti (Diptera: Culicidae). Journal of Medical Entomology 51(1): 210-219.
https://www.ncbi.nlm.nih.gov/pubmed/24605471
———————————————————————————————
2013
PDF Testing of the prototype Biogents Gravid Aedes Trap, reported by Scott Ritchie and Laila Heringer
———————————————————————————————

Scientific studies on the BG-GAT and other Biogents traps

Images of publications

September 2016
Publication:
Johnson et al., 2016: Field comparisons of the Gravid Aedes Trap (GAT) and BG-Sentinel trap for monitoring Aedes albopictus populations and notes on indoor GAT collections in Vietnam, Journal of Medical Entomology
PDF Download the publication >
———————————————————————————————
May 2016
Publication:
Heringer et al., 2016: Evaluation of Alternative Killing Agents for Aedes aegypti in the Gravid Aedes Trap (GAT)
PDF Download the publication >
———————————————————————————————
March 2016
Brian Johnson and Scott Ritchie (James Cook University, Cairns, Australia) describe field trials of the BG-GAT trap, Singapore sticky and CDC AGO traps in 2014 – 2015 with very good results for the BG-GAT trap!
PDF Download the presentation >
———————————————————————————————
September 2014
Publication:
Eiras, A.E., Buhagiar, T.S., and Ritchie, S.A. (2014): Development of the Gravid Aedes Trap for the Capture of Adult Female Container–Exploiting Mosquitoes (Diptera: Culicidae). J. Med. Entomol. 51(1): 200-209
PDF Download the publication >
———————————————————————————————
PDF List of studies with Biogents traps >

PDF List of scientific publications of our researchers >

Pricing

The BG-GATs are available in multiples of twelve with a tiered price structure depending on quantities ordered. A price list can be found in the product catalog.

Ordering

The BG-GAT can be purchased by contacting our customer support by e-mail sales@biogents.com or by fax (+49 941 5699 2168).
If you are located in Australia, please contact our distributor Pacific Biologics Pty Ltd, www.pacificbiologics.com.au

You can also consult our distributors.

Cross section through the BG-GAT (Gravid Aedes Trap)
Cross section through the BG-GAT (Gravid Aedes Trap)