A Bacillus sphaericus highly toxic to 4th-stage Culex quinquefasciatus was isolated from sediment samples collected at Winter Beach marsh in Indian River County, Florida. This isolate, named WBM 1-1-13, showed significantly higher toxicity compared with strain 2297. WBM 1-1-13 is equivalent, though better initially, to the toxicity of strain 2362, the active ingredient of VectoLex®. Furthermore, the Winter Beach marsh isolate produced more Bin per unit medium than strain 2362, which suggests that this new isolate could be useful for Culex control.
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1 December 2007
ISOLATION OF BACILLUS SPHAERICUS WITH IMPROVED EFFICACY AGAINST CULEX QUINQUEFASCIATUS
HYUN-WOO PARK,
CLARE M. MANGUM,
HE ZHONG,
SABRINA R. HAYES
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Journal of the American Mosquito Control Association
Vol. 23 • No. 4
December 2007
Vol. 23 • No. 4
December 2007
Bacillus sphaericus
Bin toxin
Culex quinquefasciatus