Ecological distribution of dengue vector Aedes albopictus in Sichuan Province from 2015 to 2018
LI Yusi
HU Yajie
LI Guancui
YU Jigang
LI Lingling
ZHANG Zhenchuan
Abstract：Objective To analyze the ecological distribution of dengue vector Aedes albopictus in Sichuan Province from 2015 to 2018,so as to provide a scientific basis for preciseprevention and control.Methods The methods of Breleau index(BI)was used for larval density,while the double layer net trap for adult aedes density.Chi-square test,t-test and ANOVA were used for variability analysis among different years,months,and habitats.Results The average BI was 8.5 and the average net trap index was 2.37,from 2015 to 2018.Differences in BI(x2=1 384.314,P＜0.001)and net trap index(F=3.911,P=0.007)among months were statistically significant,peaked from June to September.Larval density(P＜0.05)and net trap index(F=7.360,P=0.001)were significantly higher in 2015 than in other years.The variability of CI among different habitats was statistically significant(x2=1 449.883,P＜0.001),significantly higher in idle containers,waste tires,and other waters,and significantly lower in green belts ponding.The variability of net trap index between different habitats was not statistically significant(t=0.141,P=0.889).Conclusion Ae.albopictus has a relatively high density,suggesting a high risk of transmission and outbreak of dengue fever in Sichuan Province.Eliminating mosquito breeding sites should be strengthened to precise prevention and control.
Keywords：dengue feverAedes albopictusBInet trap index
Publication Date：2024-06-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 258-261,267 )