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STUDIES ON VECTOR COMPETENCE AND AUTOGENY IN CULEX SITIENS WIEDEMANN (DIPTERA: CULICIDAE)
Article first published online: 31 MAR 2007
Australian Journal of Entomology
Volume 31, Issue 3, pages 249–253, August 1992
How to Cite
Fanning, I. D., Mottram, P. and Kay, B. H. (1992), STUDIES ON VECTOR COMPETENCE AND AUTOGENY IN CULEX SITIENS WIEDEMANN (DIPTERA: CULICIDAE). Australian Journal of Entomology, 31: 249–253. doi: 10.1111/j.1440-6055.1992.tb00501.x
- Issue published online: 31 MAR 2007
- Article first published online: 31 MAR 2007
- Manuscript received 10 September 1991. Accepted 28 January 1992.
In laboratory studies, Culex sitiens was found to be moderately susceptible to infection by Ross River (RR) virus with a TC ID50 estimated at 107.3/mosquito. Evidence of infection was found 4 d after ingestion of virus and mosquitoes were still infective at 18 d. The virus was transmitted to day-old chickens from 4 d (10%) but maximum rates of transmission (33.3%) were reached 11–14 d after ingestion. Newly-hatched larvae were fed both high (12.6 mg) and low (4.2 mg) diets and fed on 5–25% sucrose as adults. Only 4 out of 485 females fed on the high diet and 0 of 247 on the low diet, developed mature ova suggesting that autogeny is probably uncommon in nature. These studies suggest that Cx. sitiens may only play a limited role in the natural transmission of RR virus.