Susceptibility of three laboratory strains of Aedes albopictus (Diptera: Culicidae) to Japanese encephalitis virus from Taiwan

Autor: Ming-Hui Weng, Hsieh-Ling Wu, Jih-Ching Lien, Yu-Ming Wang, Chuan Chin
Rok vydání: 1998
Předmět:
Zdroj: Journal of medical entomology. 34(6)
ISSN: 0022-2585
Popis: The susceptibility of 3 laboratory strains of Aedes albopictus (Skuse) (Sanhsia [SH], Yungho [YH], Liyang [LY]), and 1 strain of Culex tritaeniorhynchus Giles from northern and central Taiwan were compared for susceptibility to the MQl-2 strain of Japanese encephalitis (JE) virus. The median infective dose (MID50) by intrathoracic inoculation was 0.23, 0.76, 1.60, and —0.03 log10 WMICLD50 (50% weanling mice intracranial lethal dose) with Ae. albopictus SH, YH, LY, and Cx. tritaeniorhynchus , respectively. After feeding on a sweetened bloodvirus mixture, the oral MID50 was 2.03, 4.32, and 4.98 log10 WMICLD50 for SH, YH, and LY, respectively, and 1.02 log10 WMICLD50 for Cx. tritaeniorhynchus . The SH Ae. albopictus strain tramitted virus to normal mice after 14 d, with an average transmission rate of 45%. Based on these results, the SH strain was the most susceptible and important potential vector among 3 Ae. albopictus strains for the sympatric MQl-2 strain of JE.
Databáze: OpenAIRE