关键词: 革胡子鲶鱼, 工地积水池, 蚊虫防制

Abstract: During recent years, the investigation revealed that the pool amounts at constructing sites were significantly breeding in urban area.The paper reported a result of the mosquito control with Clarias fuscus wich was introduced from Egypt in 1994-1995.A fish about 10g or 12cm long can catch 1200 larvae of Culex pipiens quinquefasciatus;a fish of 500g can catch 26000 larvae at least for one day Before putting in the fish, the average larvae density was 465 worms/spoon (350ml), the biting rat was 147 times/m.h in night at the trial area where there were 37 pools about 2000m² at a underground constructingsite.Since putting in Clarias fuscus, the densities of larvae and adults were descended quickly and the pools wer not found with mosquito breeding after a week.The average biting rat was 16/m.h at the area where no constructing sites.RPI were 0.013 and 0.095 in the area of trial and contrast.The result shown the densities of larvae and adult mosquitoes was descended 98.7% and 90.5% respectively.Claria fuscus were growing well in the breeding sits and can survive in winter in Fuzhou.The result showed the fish is a good natural enemy to mosquito.