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Experimental Studies on Comparison of the Potential Vector Competence of Four Species of <I>Culex</I> Mosquitoes in China to Transmit West Nile Virus

2010; Oxford University Press; Volume: 47; Issue: 5 Linguagem: Inglês

10.1603/me08292

1938-2928

Shufang Jiang, Yingmei Zhang, Xiaoxia Guo, Yan-De Dong, Dan Xing, Rui‐De Xue, Tongyan Zhao,

Dengue and Mosquito Control Research

To assess the risk that indigenous mosquitoes in China are capable of transmitting and sustaining West Nile virus (WNV), four important Culex mosquito species, Culex tritaeniorhynchus, Culex modestus, Culex pipiens pallens, and Culex pipiens quinquefasciatus, were allowed to feed on the artificial infectious blood meal with WNV dose of 10(6.8) plaque-forming unit/ml and tested approximately 2 wk later to determine infection and transmission rates. The results indicated that four Culex mosquitoes were competent laboratory vectors of WNV. The infection rates and transmission rates were statistical differences among different species of mosquito (chi2 = 20.620, P = 0.000; chi2 = 15.020, P = 0.005, respectively). The highest infection rate and transmission rate were obtained with Cx. tritaeniorhynchus (87.5 and 74.2%, respectively).