Traps and baits for flies (Diptera) on Pacific Islands

Area of Science:

• Entomology
• Pest Management
• Urban Ecology

Background:

• House flies are significant pests in urban and tropical environments.
• Effective control relies on understanding species-specific behaviors and attractants.

Purpose of the Study:

• To investigate the attractant preferences and trap efficacy for different house fly species.
• To determine optimal methods for capturing and controlling Musca domestica, Chrysomya megacephala, and Musca sorbens.

Main Methods:

• Field studies were conducted on Oahu, HI, and Kwajalein Atoll, Marshall Islands.
• Various baits (cooked rice/chicken, commercial bait, shark fluids, breadfruit) were tested.
• Different trap designs (inverted-cone, horizontal entry cones) and electric grids were evaluated.

Main Results:

• Musca domestica was attracted to cooked rice/chicken and commercial bait.
• Chrysomya megacephala and Musca sorbens preferred shark fluids or ripe breadfruit.
• M. domestica and M. sorbens were captured in standard traps, while C. megacephala required modified traps.
• M. sorbens and C. megacephala were susceptible to electric grids, with M. sorbens showing attraction to 15-cm cubes.

Conclusions:

• Species-specific attractants and trap designs are crucial for efficient house fly capture.
• Electric grids offer a viable control method for M. sorbens and C. megacephala.
• Further research into bait and trap optimization can improve pest management strategies.