The detection of insecticide resistance in cockroaches is mostly done by a traditional biological test. However, recent studies have indicated that changes in a range of biochemical indicators and resistance genes are highly associated with the occurrence of such resistance, suggesting the possibility of timely, rapid and accurate detection of this occurrence by identifying the changes by biochemical and molecular biological means. Advances in such techniques are summarized in this article.

Objective To determine species composition and distribution patterns and seasonal dynamics of fly populations in Haidian district, providing data for the formulation of scientific prevention and control measures. Methods The cage trap method was employed to monitor densities and population distributions of flies at five monitoring sites at Haidian district. Results The average density of flies was 22.52/cage in Haidian district in 2008, the dominant species being Sarcophagidae. Significant seasonal fluctuations of the fly populations were observed, the highest density, 59.60/cage in late July. Most flies were captured at the monitoring sites in Taizhouwu Dock Trade Market with a density of 59.19/cage. Conclusion Urban areas should be the key areas for prevention and control of flies for the successful proceeding of 2008 Olympic Games.

【Abstract】 Objective To investigate the situation of the natural infection of Hantaviruses (HV) in rodents and provide the guidance for the control and prevention of hemorrhagic fever with renal syndrome (HFRS) in Haidian district, Beijing. Methods Rodents were captured by night trap, and lung tissue samples were taken out and stored in liquid Nitrogen. HV was detected by indirect immuno?fluorescence assay (IFA). Results There were 225 rodents captured in different habitats of Haidian district,  which belonged to 3 species and 2 Genera. Rattus norvegicus was the dominant species in the habitats investigated. The total natural infection rates of HV in rodents ranged from 4.60% to 20.00%, and the average was 6.22%. Different species had different natural infection rates. The rate of infection among R.norvegicus and Mus musculus was 6.96% and 6.06% respectively, while Apodemus agrarius was not infected. Conclusion The rodents were infected by HV in Haidian district commonly, and its main host was Rattu Genera.

Objective To investigate mosquito breeding at the victim temporary habitation of Jiuzhou gymnasium,and bring forward the control measure based on the investigation results.Methods Investigate the density of mosquito larva in the river and rice field by lava-spoon method,investigate in the downcomer,lawn,bamboo and wood by the check-container method and investigate the biting of mosquito to victims in the temporary habitation by inquiry method.Results With the coming of summer,the density of mosquito rose gradually,especially in the rice field.The density index was 0.028 lava/spoon on 29 May in east rice field of gymnasium,and 1.830 lava/spoon on 7 June.The density index increased 64 times within 9 days.Conclusion Control mosquito with the integrated management method,improve Jiuzhou gymnasium and circumjacent environments,and eliminate or control larva breeding sites.