Journal of the American Mosquito Control Association (2006) 22, 418-425

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Timothy P. Hurst, Michael D. Brown, Brian H. Kay and Peter A. Ryan (2006)
Evaluation of Melanotaenia duboulayi (Atheriniformes: Melanotaeniidae), Hypseleotris galii (Perciformes: Eleotridae), and larvicide Vectolex(r) WG (Bacillus sphaericus) for integrated control of Culex annulirostris
Journal of the American Mosquito Control Association 22 (3), 418-425
Abstract: Australian freshwater fish species Melanotaenia duboulayi and Hypseleotris galii were selected for a small plot field evaluation of an integrated pest management strategy using native fish and VectoLex(r) WG (Bacillus sphaericus) for the control of Culex annulirostris Skuse, the principal freshwater vector of arbovirus Ross River virus in Australia. When tested alone, the level of control afforded by M. duboulayi and H. galii was highly dependent on the prerelease density of mosquito larvae; and even when stocking rates as high as 10 g per pond (>30 kg/ha) were used, larval abundance was too high to attain adequate control from fish alone. In contrast, treatment with VectoLex WG at 500 g/ha resulted in 100% mortality of Cx. annulirostris immatures, but no residual activity was evident. The delayed reduction of Cx. annulirostris immatures in ponds stocked with fish alone, and the recolonization by Cx. annulirostris in ponds after treatment with B. sphaericus, did not occur when both treatments were combined.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Timothy P. Hurst, Peter A. Ryan, Brian H. Kay

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
application technology

Pest and/or beneficial records:

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

Culex annulirostris Australia (NT+QLD)
Lysinibacillus sphaericus (entomopathogen) Culex annulirostris Australia (NT+QLD)
Melanotaenia duboulayi (predator) Culex annulirostris Australia (NT+QLD)
Hypseleotris galii (predator) Culex annulirostris Australia (NT+QLD)