【Abstract】 Objective To master the species and seasonal fluctuation of mosquitoes, and provide scientific basis for mosquitoes control in Beijing ports. Methods CO2?baited trap and net trap methods were used for the surveillance of adult mosquitoes, and the scoop dipping method for the surveillance of larvae. Results A total of 14 270 mosquitoes were collected, belonging to 4 genera and 6 species. They were  Anopheles sinensis, Culex pipiens pallens,  Cx.tritaeniorhynchus,  Aedes albopictus, Ae.vexans  and  Armigeres  subalbatus.  As  many  as  114  mosquito  larvae  were  collected,  which  were  Cx.pipiens  pallens  and Cx.modestus. The dominant specie was Cx.pipiens pallens and its active peak was September. Conclusion The integrated management should be taken for a long time to control mosquitoes in Beijing ports.

【Abstract】 Objective To master the fly species and population composition at Beijing port and provide scientific evidence for fly control. Methods The baited fly traps method was used in this study. Results There were 30 species, 16 genera, 5 families of flies captured from April to November of 2006 and 2007. The annual average fly density was 59.7 flies/(cage ·day). There were two peaks, one was in May and the other was in September. Conclusion It was important to clean out the breeding sites for the control of flies at Beijing port.

【Abstract】 Objective To master the species and composition of ectozoa on the body of the rodents and hedgepig in Beijing ports. Methods Mus musculus, Rattus norvegicus, Apodemus agrarius and Erinaceus europaeus were captured by night trapping method, and the ectoza were collected from the body of them. Results A total of 282 ectozoas were picked up and identified, belonging to 12 species. It included 61 gamasid mite belonging to 6 species, 203 ticks belonging to 4 species, 13 chigger  mite  belonging to 1 species and 5 fleas belonging to 1 species. Beside the above species, there were Laelaps echidninus, Ls.jettmari, Ls.nuttalli, Haemolaelaps glasgowi, Hirstionyssus sunci, Macrocheles muscaedomesticae, Dermacentor silvarum, Dermacentor nuttalli, Rhipicephalus sanguineus, Haemaphysalis longicornis, Leptotrombidium pallidium, Xenopsylla cheopis, respectively. Conclusion The infestation ratio and the ectozoa index of these hosts were lower with the exception of hedgepig.