Effect of Trapping Methods, Weather, and Landscape on Estimates of the Culex Vector Mosquito Abundance
Autor: | Tony L. Goldberg, Surendra Karki, Edward D. Walker, Uriel Kitron, Tavis K. Anderson, Gabriel L. Hamer, Bethany L. Krebs, Marilyn O. Ruiz |
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Jazyk: | angličtina |
Rok vydání: | 2016 |
Předmět: |
0301 basic medicine
Veterinary medicine Culex West Nile virus Health Toxicology and Mutagenesis 030231 tropical medicine gravid traps Management Monitoring Policy and Law medicine.disease_cause Trapping methods 03 medical and health sciences 0302 clinical medicine Abundance (ecology) parasitic diseases medicine Medical journal lcsh:Environmental sciences Original Research lcsh:GE1-350 abundance biology business.industry lcsh:Public aspects of medicine Public Health Environmental and Occupational Health lcsh:RA1-1270 light traps landscape 030108 mycology & parasitology biology.organism_classification Pollution Lower temperature Biotechnology arbovirus weather Vector (epidemiology) Cancer gene business |
Zdroj: | Environmental Health Insights, Vol 2016, Iss 10, Pp 93-103 (2016) Environmental Health Insights Environmental Health Insights, Vol 10 (2016) |
ISSN: | 1178-6302 |
Popis: | The local abundance of Culex mosquitoes is a central factor adding to the risk of West Nile virus transmission, and vector abundance data influence public health decisions. This study evaluated differences in abundance estimates from mosquitoes trapped using two common methods: CO2- baited CDC light traps and infusion-baited gravid traps in suburban, Chicago, Illinois. On a weekly basis, the two methods were modestly correlated ( r = 0.219) across 71 weeks over 4 years. Lagged weather conditions of up to four weeks were associated with the number of mosquitoes collected in light and gravid traps. Collections in light traps were higher with higher temperature in the same week, higher precipitation one, two, and four weeks before the week of trapping, and lower maximum average wind speed. Collections in gravid traps were higher with higher temperature in the same week and one week earlier, lower temperature four weeks earlier, and with higher precipitation two and four weeks earlier. Culex abundance estimates from light traps were significantly higher in semi-natural areas compared to residential areas, but abundance estimates from gravid traps did not vary by the landscape type. These results highlight the importance of the surveillance methods used in the assessment of local Culex abundance estimates. Measures of risk of exposure to West Nile virus should assess carefully how mosquito abundance has been estimated and integrated into assessments of transmission risk. |
Databáze: | OpenAIRE |
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