Objective To understand the composition of main vector species in Zibo City in 2022, master its density and seasonal fluctuation, so as to provide scientific basis for vector biological control in Zibo City. Methods Four vectors of mosquitoes, flies, mice and cockroaches were monitored in Zibo City.Mosquito surveillance was carried out by the mosquito lamp trapping method and the Breteau index (BI) method. Cage trapping method was used to monitor flies. The night snap trapping method was used outdoors for rodent surveillance.The method of sticky trapping was used for cockroach surveillance. The difference of species composition in different habitats was determined by Chi-square test or Fisher’s exact probability method. Results In 2022, the average density of adult mosquitoes was 11.81 mosquitoes/light·night, and the highest density was 32.51 mosquitoes/light·night in August; the dominant species was Culex pipiens pallens; As for the larvae, BI were all>10.00 in July and August, and >20.00 in September. The average density of flies was 12.51 flies/cage, and the density reached the peak of 66.98 flies/cage in July; Musca sorbens was the dominant species. In 2022, the average density of rodents was 1.15%, with the peak of rodent activity in September, and the dominant rodent species was Rattus norvegicus. In 2022, the average density index of cockroaches in the city was 3.15 cockroaches/sheet, with the peak occurring in September, and Blattella germanica was the dominant species. The composition ratio of mosquitoes, flies and mice in different habitats was different, and the difference was statistically significant (χ2=3 160.149, 1 029.005, 33.394, all P<0.001). Conclusion The main disease vectors in Zibo city were Cx. pipiens pallens, M. sorbens, R. norvegicus and B. germanica. with high densities during July to September in summer. Appropriate measures should be taken to control the density of the vectors to prevent the spread of vector-borne diseases.
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