Field comparisons of the Gravid Aedes Trap (GAT) and BG-Sentinel Trap for monitoring Aedes albopictus (Diptera: Culicidae) populations and notes on indoor GAT collections in Vietnam

Johnson, Brian J., Hurst, Tim, Quoc, Hung Luu, Unlu, Isik, Freebairn, Christopher, Faraji, Ary, and Ritchie, Scott A. (2017) Field comparisons of the Gravid Aedes Trap (GAT) and BG-Sentinel Trap for monitoring Aedes albopictus (Diptera: Culicidae) populations and notes on indoor GAT collections in Vietnam. Journal of Medical Entomology. pp. 1-9. (In Press)

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View at Publisher Website: http://dx.doi.org/10.1093/jme/tjw166
 
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Abstract

We report on the use of the Gravid Aedes Trap (GAT) as a surveillance device for Aedes albopictus (Skuse) relative to the BG-Sentinel (BGS) trap in field studies conducted in Trenton, NJ, and on Hammond Island, Queensland, Australia. A parallel study conducted in Nha Trang, Vietnam, assessed the use of the GAT as an indoor surveillance device as well as the use of canola oil as a noninsecticide killing agent. In Trenton and Hammond Island, the GAT collected fewer male (0.40 ± 0.12 and 0.43 ± 0.30, respectively) and female (3.05 ± 0.67 and 2.7 ± 2.3, respectively) Ae. albopictus than the BGS trap (males: 3.54 ± 1.26 and 3.75 ± 0.83; females: 4.66 ± 1.18 and 3.9 ± 0.23) over their respective sampling periods (i.e., 24 h for the BGS and 1 wk for the GAT). Despite differences in capture rates, the percentage of traps positive for female Ae. albopictus was similar between the BGS and GAT (Trenton: 60.1 ± 6.3% and 64.4 ± 4.1%; Hammond: 87.5 ± 6.9% and 80.0 ± 8.2%). In Nha Trang, the GAT was equally effective indoors and outdoors with (10 g hay or 3 g fish food) and without (water or empty) infusion. Additionally, no significant decrease in collections was observed between GATs set with canola oil or long-lasting insecticidal net. In summary, both traps were successful in monitoring female Ae. albopictus over their respective trapping intervals, but would be best used to complement each other to monitor both sexes and all physiological stages of female Ae. albopictus . However, the versatility and low-cost of the GAT makes it an attractive alternative to the more expensive BGS trap.

Item ID: 47576
Item Type: Article (Refereed Research - C1)
Keywords: Aedes albopictus, Aedes aegypti, surveillance, Gravid Aedes Trap , biogents-sentinel Trap
ISSN: 0022-2585
Funders: National Health and Medical Research Council of Australia (NHMRC)
Projects and Grants: NHMRC Senior Research Fellowship 1044698
Date Deposited: 07 Mar 2017 23:59
FoR Codes: 11 MEDICAL AND HEALTH SCIENCES > 1117 Public Health and Health Services > 111799 Public Health and Health Services not elsewhere classified @ 100%
SEO Codes: 92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920404 Disease Distribution and Transmission (incl. Surveillance and Response) @ 100%
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