Objective To study the effects of three Aedes albopictus density monitoring methods. Methods One monitoring site each was selected in four types of habitats (urban residential areas, rural residential areas, waste collection stations, and parks) of Tai'an, Shandong province, China. The Breteau index (BI) method, Mosq-ovitrap (MOT) method, and double-layered mosquito net method were used to separately monitor the density of Ae. albopictus once each in the early, middle, and late periods of every month from April to November 2020. Differences in mosquito density were examined using Chi-squared test, and a Pearson correlation analysis was used to analyze the correlation between BI and mosq-ovitrap index (MOI). Results The average BI was 1.57, the average MOI was 6.22, and the average adult mosquitoes density by double-layer net method was 0.05 mosquito/net·h from April to November in 2020. The seasonal fluctuation trend of the three monitoring methods was basically the same, and the peak density was all in early August. Adult Ae. albopictus was detected by MOT method in early May, and Ae. albopictus was detected by BI method and double-layer net method in early July. There was a positive correlation between the BI and the MOI (r=0.957, P<0.001), and there was a positive correlation between the MOI and the adult mosquitoes density by double-layer (r=0.914, P<0.001), and there was a positive correlation between the BI and the adult mosquitoes density using double-layer net method (r=0.934, P<0.001). the BI in waste collection station (5.16)>in rural residential area (3.10)>in urban residential area (0.11)>in park (0.00). the MOI of park (6.90)>urban residential area (6.82)>rural residential area (5.55)>waste collection station (4.84). The adult mosquitoes density by double-layer net method in waste collection station (mosquito/net·h) (0.32)>rural residential area (0.30)>park (0.22)>urban residential area (0.06). Conclusion The density index of Ae. albopictus monitored by the MOT method is relatively high, which can reflect the density level of Ae. albopictus at an earlier time to provide an earlier warning of mosquito-borne diseases in Tai'an city. The BI method and double-layer net method are suitable for density surveillance during the peak period of Ae. albopictus.
MA De-zhen, SONG Wei, XU Yan, LIU Huan-yan
. Comparison of three Aedes albopictus density monitoring methods[J]. Chinese Journal of Vector Biology and Control, 2022
, 33(3)
: 336
-339
.
DOI: 10.11853/j.issn.1003.8280.2022.03.004
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