Skip to main content

Research Repository

Advanced Search

Development of a Gravid Trap for Collecting Live Malaria Vectors Anopheles gambiae s.l

Dugassa, S.; Lindh, J.M.; Oyieke, F.; Mukabana, R.W.; Lindsay, S.W.; Fillinger, U.

Development of a Gravid Trap for Collecting Live Malaria Vectors Anopheles gambiae s.l Thumbnail


S. Dugassa

J.M. Lindh

F. Oyieke

R.W. Mukabana

U. Fillinger


Background: Effective malaria vector control targeting indoor host-seeking mosquitoes has resulted in fewer vectors entering houses in many areas of sub-Saharan Africa, with the proportion of vectors outdoors becoming more important in the transmission of this disease. This study aimed to develop a gravid trap for the outdoor collection of the malaria vector Anopheles gambiae s.l. based on evaluation and modification of commercially available gravid traps. Methods: Experiments were implemented in an 80 m2 semi-field system where 200 gravid Anopheles gambiae s.s. were released nightly. The efficacy of the Box, CDC and Frommer updraft gravid traps was compared. The Box gravid trap was tested to determine if the presence of the trap over water and the trap’s sound affected catch size. Mosquitoes approaching the treatment were evaluated using electrocuting nets or detergents added to the water in the trap. Based on the results, a new gravid trap (OviART trap) that provided an open, unobstructed oviposition site was developed and evaluated. Results: Box and CDC gravid traps collected similar numbers (relative rate (RR) 0.8, 95% confidence interval (CI) 0.6–1.2; p = 0.284), whereas the Frommer trap caught 70% fewer mosquitoes (RR 0.3, 95% CI 0.2–0.5; p < 0.001). The number of mosquitoes approaching the Box trap was significantly reduced when the trap was positioned over a water-filled basin compared to an open pond (RR 0.7 95% CI 0.6–0.7; p < 0.001). This effect was not due to the sound of the trap. Catch size increased by 60% (RR 1.6, 1.2–2.2; p = 0.001) with the new OviART trap. Conclusion: Gravid An. Gambiae s.s. females were visually deterred by the presence of the trapping device directly over the oviposition medium. Based on these investigations, an effective gravid trap was developed that provides open landing space for egg-laying Anopheles.


Dugassa, S., Lindh, J., Oyieke, F., Mukabana, R., Lindsay, S., & Fillinger, U. (2013). Development of a Gravid Trap for Collecting Live Malaria Vectors Anopheles gambiae s.l. PLoS ONE, 8(7), Article e68948.

Journal Article Type Article
Publication Date Jul 5, 2013
Deposit Date May 9, 2014
Publicly Available Date May 19, 2014
Journal PLoS ONE
Publisher Public Library of Science
Peer Reviewed Peer Reviewed
Volume 8
Issue 7
Article Number e68948


Published Journal Article (2.3 Mb)

Copyright Statement
© 2013 Dugassa et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

You might also like

Downloadable Citations