Biomaterial Database

Evaluation of Bacillus sphaericus 2362 against Culex quinquefasciatus in septic ditches. 1990

J W Jones, and A A Weathersbee, and P Efird, and M V Meisch

Department of Entomology, University of Arkansas, Fayetteville 72701.

Four application rates of Bacillus sphaericus strain 2362 were tested for efficacy in septic ditches against Culex quinquefasciatus 2nd-4th instar larvae. Trials were conducted over a 2-year period. In 1987, all dosages applied to dairy effluent ditches resulted in substantial reductions after 48 h. Differences among dosages did not differ significantly (P greater than or equal to 0.05). After 5 days, mosquito larval numbers increased with dosage rates of 0.6, 0.9 and 1.2 liters/ha. Residual control was maintained, however, at 2.4 liters/ha for 17 days. In 1988, B. sphaericus applied to domestic sewage effluent ditches at rates of 1.2 liters/ha, and 2.4 liters/ha induced greater than 79% suppression for a period of 15 days, and the 1.2 liters/ha rate induced greater than 79% suppression for a period of 20 days. A rate of 0.9 liters/ha provided good to excellent control (greater than 88%) for a period of 10 days. A rate of 0.6 liters/ha produced less than 50% suppression after 48 h.

UI	MeSH Term	Description	Entries
D007814	Larva	Wormlike or grublike stage, following the egg in the life cycle of insects, worms, and other metamorphosing animals.	Maggots,Tadpoles,Larvae,Maggot,Tadpole
D010572	Pest Control, Biological	Use of naturally-occuring or genetically-engineered organisms to reduce or eliminate populations of pests.	Biological Pest Control,Biologic Pest Control,Pest Control, Biologic,Biologic Pest Controls,Biological Pest Controls,Pest Controls, Biologic,Pest Controls, Biological
D011156	Population Density	Number of individuals in a population relative to space.	Overpopulation,Population Size,Underpopulation,Densities, Population,Density, Population,Population Densities,Population Sizes
D003465	Culex	A genus of mosquitoes (CULICIDAE) commonly found in tropical regions. Species of this genus are vectors for ST. LOUIS ENCEPHALITIS as well as many other diseases of man and domestic and wild animals.	Culices
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001407	Bacillus	A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic.	Bacillus bacterium
D012722	Sewage	Refuse liquid or waste matter carried off by sewers.	Sludge,Sludge Flocs