Efficiency evaluation of Nozawa-style black light trap for control of anopheline mosquitoes.
House-residual spraying and insecticide-treated bed nets have achieved some success in controlling anthropophilic and endophagic vectors. However, these methods have relatively low efficacy in Korea because Anopheles sinensis, the primary malaria vector, is highly zoophilic and exophilic. So, we focused our vector control efforts within livestock enclosures using ultraviolet black light traps as a mechanical control measure. We found that black light traps captured significantly more mosquitoes at 2 and 2.5 m above the ground (P < 0.05). We also evaluated the effectiveness of trap spacing within the livestock enclosure. In general, traps spaced between 4 and 7 m apart captured mosquitoes more efficiently than those spaced closer together (P > 0.05). Based on these findings, we concluded that each black light trap in the livestock enclosures killed 7,586 female mosquitoes per trap per night during the peak mosquito season (July-August). In May-August 2003, additional concurrent field trials were conducted in Ganghwa county. We got 74.9% reduction (P < 0.05) of An. sinensis in human dwellings and 61.5% reduction (P > 0.05) in the livestock enclosures. The black light trap operation in the livestock enclosures proved to be an effective control method and should be incorporated into existing control strategies in developed countries.
Lee
Hee Il
HI
Division of Medical Entomology, National Institute of Health, Korea Centers for Disease Control and Prevention, Seoul, Korea.
Seo
Bo Youl
BY
Shin
E-Hyun
EH
Burkett
Douglas A
DA
Lee
Jong-Koo
JK
Shin
Young Hack
YH
D000818:Animals; D000852:Anopheles / Q000528:radiation effects*; D005260:Female; D006799:Housing, Animal; D006801:Humans; D007723:Korea; D009032:Mosquito Control / Q000379:methods*; D014466:Ultraviolet Rays