Laboratory and Field Evaluation of Bacillus sphaericus as a Mosquito Control Agent

The full text article is not available for purchase.

The publisher only permits individual articles to be downloaded by subscribers.


Bacillus sphaericus Neide strain 1593–4 was found to be more virulent against the southern house mosquito, Culex quinquefasciatus Say, and possessed longer residual activity than strain SSII-1 in pond tests at Fresno, CA. Furter testing of strain 1593-4 provided excellent control of a natural population of Culex tarsalis Coquillett in Kern County, CA, at 104 cells/ml. Infectivity of the bacterium on a mixed population of C. tarsalis and southern house mosquito was decreased in a treatment of a dairy drain. A WP formulation of 1593-4 improved handling of the material and resulted in operational control of C. tarsalis at 0.84 kg/ha (7.6×103 spores/ml). Effective control of a mixed population of Aedes melanimon Dyar and A. nigramaculis (Ludlow) was not obtained at 104 cells/ml in 0.02-ha pasture plots, although laboratory tests showed A. nigromaculis had a high susceptibility to the bacterium compared to other Aedes spp. A field test of strain 1593-4 showed no deleterious effect on non targets at 105 cells/ml. Fry of the mosquito fish, Gambusia affinis affinis (Baird and Girard), showed no adverse effect at 5 × 104 spores/ml of 1593-4 WP.

Document Type: Research Article

Publication date: October 15, 1978

More about this publication?
Related content



Share Content

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more