Journal of Medical Entomology (1999) 36, 856-860

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Peter A. Ryan and B.H. Kay (1999)
Vector competence of mosquitoes (Diptera : Culicidae) from Maroochy Shire, Australia, for Barmah Forest virus
Journal of Medical Entomology 36 (6), 856-860
Abstract: Mosquitoes were collected in light traps from Maroochy Shire and fed on blood containing the sympatric BF1611 strain of Barmah Forest virus (BF). Saltmarsh Aedes vigilax (Skuse) and freshwater Aedes procax (Skuse) were highly susceptible to infection, with ID50s of 101.7 and 101.5 African green monkey kidney (Vero) cell culture infectious dose, 50% endpoint (CCID50) per mosquito, respectively, followed by Aedes multiplex (Theobald) and Aedes funereus (Theobald) with 102.5 and 103.2 CCID50 per mosquito, respectively. Culex australicus Dobrotworsky and Drummond and Mansonia uniformis (Theobald) that were fed 103.6 CCID50 (Vero) BF per mosquito had infection rates of 28 and 60%, respectively. Only 8% of freshwater Culex annulirostris Skuse fed the same viral dose were infected. Evidence of virus transmission to mice was found with Ae. vigilax and Ae. procax, with transmission rates of 65 and 88% at 11-12 d after infection, respectively. Based on adult abundance, susceptibility to infection, and efficiency of virus transmission, Ae. vigilax would appear to be the most important vector of BF in Maroochy Shire.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Peter A. Ryan, Brian H. Kay

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Culex annulirostris
Aedes procax
Verrallina funerea
Aedes vigilax
Mansonia uniformis