Monitoring results of rodents in Hainan Province in 2022 and the relationship between rodent density and meteorological factors in Haikou
- Author:
ZENG Xuexia
;
LI Qiaojun
;
LI Puyu
- Publication Type:Journal Article
- Keywords:
Rodent density;
monitoring;
meteorological factors;
vector organisms
- From:
China Tropical Medicine
2024;24(5):532-
- CountryChina
- Language:Chinese
-
Abstract:
Abstract: Objective By analyzing the monitoring results of rodents in Hainan Province in 2022, the species composition, distribution, seasonal fluctuation, and density of rodents were understood and mastered, and the correlation between rodent density and meteorological factors in Haikou was explored, so as to provide a scientific basis for vector control and prevention and control of rodent-borne infectious diseases. Methods Using the night cage method, according to the "2022 Hainan Province Rodent Monitoring Implementation Plan”, monitoring was conducted in 17 cities and counties every two months starting from January. Excel 2021 software was used to sort out the monitoring data and draw the chart, and SPSS 26.0 was used for statistical analysis. Spearman correlation analysis was used for the correlation between rodent density and meteorological factors. Results In 2022, the overall rodent density in Hainan Province was 4.32% (1 166/27 008). Brown rat (Rattus norvegicus) was the dominant species, accounting for 72.21% (842/1 166) of the total captures. In terms of area, the highest rodent density was 27.27% (367/1 346) in Changjiang County, followed by Haikou, Wanning, and Sanya, with rodent densities of 8.59% (155/1 804), 6.55% (77/1 176), and 5.11% (81/1 586), respectively. Different habitat types had different rodent densities, with the highest in rural residential areas at 4.49% (402/8 962); key industries (dining, food manufacturing and sales, construction sites, slaughtering, brewing, etc.) had a density of 4.41% (404/9 153); and urban residential areas had a density of 4.05% (360/8 893). In terms of seasonal fluctuation, the overall rodent density showed a downward trend after reaching its peak in May. The peak rodent density in rural residential areas was in July (5.73%), there was no distinct peak period in urban residential areas, and the peak period for key industries occurred in May (6.87%). Spearman correlation analysis showed that the rodent density in Haikou was positively correlated with average temperature and accumulated sunshine time (r=0.90, 0.9; P<0.05). Conclusions The density of rodents in Hainan Island is relatively high. Cities and counties need to compare annual monitoring data to reasonably assess the risk and formulate appropriate control measures according to the actual local situation.
- Full text:20250617170140611956.Monitoring results of rodents in Hainan Province in 2022 and the relationship between rodent density and meteorological factors in Haikou.pdf
