Field Responses of Anopheles gambiae Complex (Diptera: Culicidae) in Liberia using Yeast-Generated Carbon Dioxide and Synthetic Lure-Baited Light Traps

Malaria infection is a serious public health problem throughout Liberia, but vector surveillance is limited or nonexistent in remote regions of the country. To better understand the spatial and temporal distribution of malaria vectors in Liberia and to support vector and malaria activities of the Li...

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Bibliographic Details
Main Authors: Obenauer, P J, Abdel-Dayem, M S, Stoops, C A, Villinski, J T, Tageldin, R, Fahmy, N T, Diclaro II, J W, Bolay, F
Format: Report
Language:English
Subjects:
Biology
C0436-11-N3
C0549-12-N3
CARBON DIOXIDE
CULICIDAE
FIELD TESTS
Inorganic Chemistry
LIGHT EMITTING DIODES
LIGHT TRAPS
MALARIA
MOLECULAR ANALYSIS
Optics
S-FORM
STATISTICAL ANALYSIS
ULTRAVIOLET RADIATION
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Summary:Malaria infection is a serious public health problem throughout Liberia, but vector surveillance is limited or nonexistent in remote regions of the country. To better understand the spatial and temporal distribution of malaria vectors in Liberia and to support vector and malaria activities of the Liberian Ministry of Health, a study was conducted to determine the efficacy of light traps baited with a synthetic lure and CO2 for capturing Anopheles gambiae sensu lato (Giles). Traps with a ultraviolet, light-emitting diode, and incandescent lights baited with a synthetic skin lure and CO2 combinations were evaluated at four field sites in three counties of Liberia for five consecutive nights every 8 wk during 2011. In total, 4,788 mosquitoes representing 56 species from nine genera were collected throughout the 30-wk study; An. gambiae s. l. comprised 32% and of the 148 An. gambiae s. s. collected, 85% were of the S form. A greater percentage of An. gambiae s. l. were collected in ultraviolet traps baited with a synthetic lure and CO2 compared with any other trap configuration. The influence of trap configuration on conclusions from surveillance efforts, specifically with regards to An. gambiae is discussed. Published in the Journal of Medical Entomology, v50 n4 p863-870, Jul 2013. Prepared in collaboration with the Center for Medical and Veterinary Entomology, USDA, Gainesville, FL and the U.S. Naval Medical Research Unit No. 3, Cairo, Egypt. Prepared in cooperation with the College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia, and the Liberian Institute for Biomedical Research, Monrovia, Liberia.