Dispersal Range of Anopheles sinensis in Yongcheng City, China by Mark-Release-Recapture Methods

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Liu, Qiyong
Liu, Xiaobo
Zhou, Guangchao
Jiang, Jingyi
Guo, Yuhong
Ren, Dongsheng
Zheng, Canjun
Wu, Haixia
Yang, Shuran
Liu, Jingli
Li, Hongsheng
Li, Huazhong
Li, Qun
Yang, Weizhong
Chu, Cordia
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2012
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Background: Studying the dispersal range of Anopheles sinensis is of major importance for understanding the transition from malaria control to elimination. However, no data are available regarding the dispersal range of An. sinensis in China. The aim of the present study was to study the dispersal range of An. sinensis and provide the scientific basis for the development of effective control measures for malaria elimination in China. Methodology/Principal Findings: Mark-Release-Recapture (MRR) experiments were conducted with 3000 adult wild An. sinensis in 2010 and 3000 newly emerged wild An. sinensis in 2011 in two villages of Yongcheng City in Henan Province. Marked An. sinensis were recaptured daily for ten successive days using light traps. The overall recapture rates were 0.83% (95% CI, 0.50%,1.16%) in 2010 and 1.33% (95% CI, 0.92%,1.74%) in 2011. There was no significant difference in the recapture rates of wild An. sinensis and newly emerged An. sinensis. The majority of An. sinensis were captured due east at study site I compared with most in the west at study site II. Eighty percent and 90% of the marked An. sinensis were recaptured within a radius of 100 m from the release point in study site I and II, respectively, with a maximum dispersal range of 400 m within the period of this study. Conclusions/Significance: Our results indicate that local An. sinensis may have limited dispersal ranges. Therefore, control efforts should target breeding and resting sites in proximity of the villages

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PloS One

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7

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11

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© 2012 Liu et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution License CCAL. (http://www.plos.org/journals/license.html)

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Epidemiology not elsewhere classified

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