Objective To study the distribution of suitable habitats of Ornithodoros ticks in Xinjiang Uygur Autonomous Region (Xinjiang),China under current and future climate scenarios.Methods The Ornithodoros distribution data in Xinjiang in 2002-2022 were obtained through field sampling and literature search. The obtained distribution data were sorted and plotted by ArcGIS 10.6 software. The climate data in Xinjiang in the past 30 years and future 80 years were obtained through the WorldClim 2.1 database. The main environmental variables were selected using the maximum entropy (MaxEnt) jackknife test and Spearman correlation analysis. The selected Ornithodoros distribution data and environmental variables were used to construct a MaxEnt model for predicting and projecting the current and future potential suitable habitats of Ornithodoros in Xinjiang. The predictive performance of the model was assessed using the area under the receiver operating characteristic curve (AUC). The relative effects of different environmental variables on the potential distribution of Ornithodoros were assessed using the MaxEnt jackknife test. The specific effects of environmental variables on the potential distribution of Ornithodoros were analyzed using the response curves derived from the MaxEnt model. The results were visualized and reclassified using ArcGIS 10.6 software to analyze the potential distribution of Ornithodoros and the suitable habitat area in Xinjiang under current and future (ssp245) climate scenarios.Results A total of 65 distribution data of Ornithodoros and six environmental variables were selected from 82 pieces of distribution data and 20 environmental variables through query and comparison. The AUC of the constructed MaxEnt model was 0.892,with good prediction accuracy. The jackknife test showed that the dominant climatic factors influencing the distribution of Ornithodoros were the minimum temperature in the coldest month and the precipitation in the driest season, with the contribution rates being 53.32% and 15.68%, respectively. The response curves showed that appropriate temperature and humidity would greatly increase the probability of occurrence of Ornithodoros. According to the model prediction map and reclassification results, under current climatic conditions, the suitable habitats of Ornithodoros in Xinjiang were mainly distributed around the Tarim Basin and the Turpan Basin; the areas of the most suitable habitats and highly suitable habitats were 84 900 km² and 119 900 km², respectively; the total area of the suitable habitats accounted for about 30.01% of the total area of Xinjiang. Under the ssp245 climate scenario, the most suitable area would increase to 93 700 km² in 2021-2040, and the highly suitable area would increase to 134 200 km² in 2081-2100.Conclusions Temperature is the most important factor influencing the distribution of Ornithodoros. The most suitable area and highly suitable area of Ornithodoros would increase under future climate scenarios.

　　【Abstract】　Objective　Know the dynamic change of mosquito population constitution and its density and its seasonal fluctuation in Three Gorges Reservoir area. Methods　The mosquitoes were captured by direct current electric mosquito-catching trap at the fixed time and places, and then identified and counted. Results　The dominant species of mosquitoes were Armigeres subalbatus, Culex pipiens quinqusfasciatus, Anopheles sinensis, Cx.tritaeniorhynchus and Cx.pipiens pallens in the Three Gorges Reservoir area. The density of mosquito in room was higher than outside. Conclusion　The density of mosquito tended to decline from 1997 to 2007, and mosquito monitoring should be strengthened.

Objective:To explore simple and sensitive technic for insecticide resistance detection and early prediction.Methods:Microplate test was used to detect non-specific esterase(NSE) of single Cx.pipeins pallens of laboratory and field population,using β-Naphthyl acetate as the substrate and fast blue B salt solution as the colour agent.Results:The NSE level was highest in anti-DDVP strain,followed by anti-propoxur strain and anti-DDVP degenerated strain,while the level was similar between anti-cypermethrin and susceptible strain.Three field collected Cx.pipiens pallens populations have 4.15-9.36 fold higher resistance against DDVP and 1.02 - 3.81 fold higher resistance against propoxur than susceptible mosquito,and their NSE level was also higher than susceptible strain.Conclusion:Microplate test for NSE can be used for the detection of resistance against Op and carbamate insecticides.The method is easy and rapid to perform with high precision and objective results.Resistance frequency and mechanism can be detected at the same time,so early prediction of resistance and working out resistance management measure is possible.