关键词: 白纹伊蚊, 登革病毒, 垂直传播, 媒介效能

Abstract: Aedes albopictus were detected by virus isolation in C6/36 cell culture combined with the polymerase chain reaction (PCR) using the Flavivirus universal primer set after sucking the infant mice's blood infected with dengue virus (DEN) 1-4 serotype respectively. The infection rate was as high as 50% to 58%. Studies also showed that this species of mosquitoes can transmit each serotype of dengue virus to infant mice, the sensitive host, simply by biting them. First filial eggs of the infected females, larvae and adults of both sexes from infected mothers were collected in 582 pools and examed respectively. The positive rates in the pools of the first generation progeny were 2.6% for DEN 1,2.7% for DEN 2,1.5% for DEN 3 and 1.5% for DEN 4, of the second generation progeny, 4.3%,4.3%,3.3% and 3.3%,respectively. These results may indicate that infected Ae.albopictus females were capable of transmitting dengue virus vertically and have a potential role in the natural circulation of the virus.