Comparative evaluation of anopheline sampling methods in three localities in Indonesia

Area of Science:

• Medical entomology
• Vector-borne disease control
• Tropical public health

Background:

• Mosquito biting patterns can shift in response to control interventions, leading to residual malaria transmission.
• Behaviorally resistant mosquitoes pose a significant challenge to current malaria control strategies.
• Accurate mosquito sampling is essential for understanding behavior and optimizing control.

Purpose of the Study:

• To evaluate the effectiveness of various mosquito traps for surveillance in diverse Indonesian settings.
• To understand local mosquito feeding behaviors and identify optimal trapping methods.
• To inform the development of targeted vector control strategies.

Main Methods:

• Eight different mosquito traps, including human landing collection (HLC), were tested across three geographically distinct, malaria-endemic sites in Indonesia.
• Trapping was conducted using indoor and outdoor methods, tent traps, resting containers, and light traps over varying durations.
• A Latin square design was employed to systematically compare trap performance.

Main Results:

• Trap efficacy varied significantly by location and mosquito species.
• Outdoor human landing collection (HLC) was most effective in Canti and Kaliharjo villages.
• A goat-baited tent trap was most effective in Saketa village, particularly for zoophilic vectors.
• Anopheles sundaicus were captured indoors and outdoors in Canti, with peak activity in the early morning.

Conclusions:

• No single trapping method is universally effective across all locations and mosquito species.
• Mosquito populations in different Indonesian islands exhibit unique behaviors, necessitating tailored surveillance approaches.
• Effective vector monitoring and control require location-specific strategies based on local mosquito behavior.