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Investigation and analysis on the overwintering of
Aedes albopictus
in the containers in Songjiang district, Shanghai, China
LYU Xi-hong, CHENG Hua, GUO Xiao-qin, FEI Sheng-jun, PANG Bo-wen, LU Wei-wei, GAO Pei-yun, LENG Pei-en
Abstract
(
345
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Objective
To understand the overwintering status of
Aedes albopictus
and influencing factors in Songjiang district, for providing scientific suggestions for local
Ae. albopictus
control and prevention in winter season.
Methods
Cross-sectional study was applied, and water samples of containers were collected randomly in courtyard in 11 sub-districts in Songjiang from January to March in 2017. Then the collected water samples were incubated in artificial climate box for 2 weeks, and the hatching rate and incubation time were recorded, then a statistical analysis was conducted by applying SPSS 16.0 and Excel 2003 software.
Chi
square test and non-parametric test were used for univariate analysis, binary logistic regression and the generalized linear model analysis were applied for multivariate analysis.
Results
The overwintering positive rate of
Ae. albopictus
was 40.27% (60/149). The potential Breteau index (BI)of 11 sub-districts were all over 20, with the lowest of 20.00 and the highest of 66.67. Logistic regression analysis indicated that the positive rate of
Ae. albopictus
in urban areas was higher than that in rural areas (
P
=0.018), and the positive rate in temporary water containers and waste tires were higher than that in the fixed water containers (
P
=0.001, 0.049). Of all 60 water samples with positive incubation, the shortest incubation time was 0.75 d (18 h)and the longest incubation time was 13.00 d, with a median incubation time of 6.00 d. Generalized linear model analysis showed that the incubation time decreased gradually with the increase of months (
b
=-1.252,
P
=0.046).
Conclusion
The overwintering positive rate of
Ae. albopictus
in water containers in Songjiang district was high, and the temporary water containers and waste tires were the main overwintering places for
Ae. albopictus
, the incubation time decreased month by month from January to March. Therefore, we should carry out
Ae. albopictus
control and prevention in winter, this could reduce the density of the mosquito of the next year, which was a critical control and prevention measure for
Ae. albopictus
.
2018, 29 (3): 254-258.
doi:
10.11853/j.issn.1003.8280.2018.03.009
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Situation and countermeasures of cockroaches in hotels at Linghe district, Jinzhou city
LU Wei, LI Yue-Ming, SHAN Jian
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973
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2010, 21 (2): 127-127.
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An investigation on a case of scabies transmission in an art school in Haidian district of Beijing and its control measure
WANG Lei, CAI Wei, SU Xuan, DING Jie, LU Wei
Abstract
(
804
)
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1005
)
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2009, 20 (5): 498-.