Objective To investigate the species composition, population density, and seasonal variation of flies in Jiangbei District of Ningbo, Zhejiang Province, China, and explore the influence of meteorological factors on fly density, so as to provide a scientific basis for fly control. Methods From April to November in 2019-2022, fly density was monitored by the cage trapping method at 12 surveillance sites in Jiangbei District. The Chi-square test and one-way analysis of variance were used to compare the data of different years and different habitats. A multiple linear regression analysis was used to analyze the correlation between fly density and meteorological factors. Results A total of 732 flies were captured, with a total fly density of 1.92 flies/cage. The dominant fly species were Musca domestica and M. sorbens, accounting for 80.74% of the total catch. In different habitats, the fly density was the highest in farmers' markets (2.48 flies/cage) and the lowest in greenbelts (1.42 flies/cage). There was no significant difference in fly density between different habitats (F=0.680, P=0.581). The fly density peaked from July to September, and the highest density was 6.67 flies/cage in August 2019. There was a significant difference in the seasonal variation of fly density between different years (F=3.471, P=0.029). Fly density was significantly associated with mean monthly temperature (β=0.357, P=0.008) and mean monthly wind speed (β=-0.844, P=0.006). Conclusions The dominant fly species in Jiangbei District are M. domestica and M. sorbens, the fly density is highest in the agricultural market, and the peak activity period is from July to September. It is recommended to carry out comprehensive prevention and control measures for dominant fly species in key areas before the peak fly activity period.
JIN Yan-li
. Surveillance results on fly density in Jiangbei District of Ningbo, Zhejiang Province, China, 2019-2022[J]. Chinese Journal of Vector Biology and Control, 2025
, 36(2)
: 171
-176
.
DOI: 10.11853/j.issn.1003.8280.2025.02.006
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