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Modeling Monthly Variation of Culex tarsalis (Diptera: Culicidae) Abundance and West Nile Virus Infection Rate in the Canadian Prairies

Author

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  • Chen-Chih Chen

    (Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada)

  • Tasha Epp

    (Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada)

  • Emily Jenkins

    (Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada)

  • Cheryl Waldner

    (Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, SK S7N 5B4, Canada)

  • Philip S. Curry

    (Saskatchewan Ministry of Health, 3475 Albert Street, Regina, SK S4S 6X6, Canada)

  • Catherine Soos

    (Environment Canada, Science & Technology Branch, 115 Perimeter Road, Saskatoon, SK S7N 0X4, Canada)

Abstract

The Canadian prairie provinces of Alberta, Saskatchewan, and Manitoba have generally reported the highest human incidence of West Nile virus (WNV) in Canada. In this study, environmental and biotic factors were used to predict numbers of Culex tarsalis Coquillett, which is the primary mosquito vector of WNV in this region, and prevalence of WNV infection in Cx. tarsalis in the Canadian prairies. The results showed that higher mean temperature and elevated time lagged mean temperature were associated with increased numbers of Cx. tarsalis and higher WNV infection rates. However, increasing precipitation was associated with higher abundance of Cx. tarsalis and lower WNV infection rate. In addition, this study found that increased temperature fluctuation and wetland land cover were associated with decreased infection rate in the Cx. tarsalis population. The resulting monthly models can be used to inform public health interventions by improving the predictions of population abundance of Cx. tarsalis and the transmission intensity of WNV in the Canadian prairies. Furthermore, these models can also be used to examine the potential effects of climate change on the vector population abundance and the distribution of WNV.

Suggested Citation

  • Chen-Chih Chen & Tasha Epp & Emily Jenkins & Cheryl Waldner & Philip S. Curry & Catherine Soos, 2013. "Modeling Monthly Variation of Culex tarsalis (Diptera: Culicidae) Abundance and West Nile Virus Infection Rate in the Canadian Prairies," IJERPH, MDPI, vol. 10(7), pages 1-19, July.
    • Handle: RePEc:gam:jijerp:v:10:y:2013:i:7:p:3033-3051:d:27371
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    References listed on IDEAS

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    1. Chen C. Chen & Emily Jenkins & Tasha Epp & Cheryl Waldner & Philip S. Curry & Catherine Soos, 2013. "Climate Change and West Nile Virus in a Highly Endemic Region of North America," IJERPH, MDPI, vol. 10(7), pages 1-20, July.
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    Cited by:

    1. Hiroko Mori & Joshua Wu & Motomu Ibaraki & Franklin W. Schwartz, 2018. "Key Factors Influencing the Incidence of West Nile Virus in Burleigh County, North Dakota," IJERPH, MDPI, vol. 15(9), pages 1-19, September.

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