+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Laboratory bioassays of bacillus sphaericus 1593 2297 and 2362 against mosquitoes of public health importance in malaysia



Laboratory bioassays of bacillus sphaericus 1593 2297 and 2362 against mosquitoes of public health importance in malaysia



Tropical Biomedicine 3(2): 161-166



The larvicidal activity of Bacillus sphaericus strain 1593, 2297 and 2362 was determined by bioassays against laboratory-reared larvae of four local species of mosquitoes namely, Culex quinquefasciatus, Anopheles maculatus, Aedes aegypti and Armigeres durhami. Strain 2362 was also tested against the predacious larvae of Toxorhynchites splendens both in the presence and absence of prey. The bioassay involved exposing the late 3rd or early 4th instar larvae to various concentrations of each B. sphaericus strains. Larval mortality was recorded after 24 and 48 hours exposure, and up to 72 hours in Tx. splendens. Computer analysis of the results with probit analysis indicated that all 3 strains of B. sphaericus were highly active against Cx. quinquefasciatus, moderately toxic to An. maculatus, but was relatively inactive against Ae. aegypti and Ar. durhami. This is the first report of the extremely high tolerance of Ar. durhami to B. sphaericus. Generally, all strains of B. sphaericus were slow acting, producing higher mortality after 48 hours. B. sphaericus 2362 did not show any effect on Tx. splendens in the absence of prey. However, in the presence of Cx. quinquefasciatus as prey, 10% mortality of Tx. splendens was observed at the highest concentration (5 .times. 107 spores/ml) after 72 hours exposure.

Please choose payment method:






(PDF emailed within 1 workday: $29.90)

Accession: 005787524

Download citation: RISBibTeXText


Related references

Bioassays of Bacillus sphaericus (strain 1593) against mosquitoes of public health importance in Malaysia. Southeast Asian Journal of Tropical Medicine and Public Health 16(1): 54-58, 1985

Isolation and evaluation of two isolates of Bacillus sphaericus for the control of mosquitoes of public health importance in Malaysia. Mosquito Borne Diseases Bulletin 5(3-4): 39-47, 1988

Laboratory bioassays of mosquito coil formulations against mosquitoes of public health importance in malaysia. Tropical Biomedicine 4(1): 13-18, 1987

Small-scale field trials of Bacillus sphaericus (strain 2362) formulations against Mansonia mosquitoes in Malaysia. Journal of the American Mosquito Control Association 7(1): 24-29, 1991

Sequence analysis of the mosquitocidal toxin genes encoding 51.4- and 41.9-kilodalton proteins from Bacillus sphaericus 2362 and 2297. Journal of Bacteriology 170(5): 2045-2050, 1988

Fate of Bacillus sphaericus 1593 and 2362 spores used as larvicides in the aquatic environment. Applied and Environmental Microbiology 47(1): 125-129, 1984

Permanence of larvicidal activity of Bacillus sphaericus strains 2362 and 2297 in dead larvae of Cx. quinquefasciatus (Diptera - Culicidae). Kasmera 23(2): 171-178, 1995

Effects of Bacillus sphaericus 1593 and 2362 spore/crystal toxin on cultured mosquito cells. Journal of Invertebrate Pathology 47(1): 21-31, 1986

A comparison of laboratory and field tests of Bacillus sphaericus strain 1593 and Bacillus thuringiensis var. israelensis against Aedes stimulans larvae (Diptera: Culicidae) Insect pathogen, biocontrol agent, Mosquitoes. Canadian entomologist 114(1): 55-61, 1982

Persistence and efficacy of bacillus sphaericus strain 1593 and 2362 against culex pipiens larvae under field conditions. Zeitschrift fuer Angewandte Entomologie 98(2): 185-189, 1984

Effect of GramoxoneReg. herbicide on spore viability and larvicidal activity of Bacillus sphaericus 2362 and 1593 strains. Fresenius Environmental Bulletin 12(11): 1338-1344, 2003

A 1.1-kilobase region downstream of the bin operon in Bacillus sphaericus strain 2362 decreases bin yield and crystal size in strain 2297. Applied and Environmental Microbiology 75(3): 878-881, 2008

Effect of some environmental factors on the efficacy of bacillus sphaericus 2362 and bacillus thuringiensis h 14 against mosquitoes. Bulletin of the Society for Vector Ecology 15(2): 166-175, 1990

Susceptibility of three species of mosquitoes to a Pasteur Institute preparation of Bacillus sphaericus (strain 2297). Journal of the American Mosquito Control Association 2(2): 237-238, 1986

Efficacy of Bacillus sphaericus 2362 formulations against floodwater mosquitoes. Journal of the American Mosquito Control Association 4(2): 172-174, 1988