scholarly journals Synergism in Larvicidal Activity between Supernatant and Pellet from Bacillus thuringiensis Culture

1995 ◽  
Vol 30 (1) ◽  
pp. 153-158 ◽  
Author(s):  
Shoji ASANO ◽  
S. Leslie INDRASITH ◽  
Hidetaka HORI
Keyword(s):  
Bacillus Thuringiensis ◽  
Larvicidal Activity

A STANDARDIZED BIOASSAY FOR LARVICIDAL ACTIVITY OF BACILLUS THURINGIENSIS IN SUNFLOWER MOTH HOMOEOSOMA ELECTELLUM (LEPIDOPTERA: PHYCITIDAE)

1985 ◽  
Vol 117 (1) ◽  
pp. 15-22 ◽  
Author(s):  
R. G. Lidstone ◽  
D. W. Goerzen ◽  
G. G. Khachatourians
Keyword(s):  
Bacillus Thuringiensis ◽  
Larvicidal Activity ◽  
Standard Test ◽  
Mortality Curve ◽  
Bioassay Technique ◽  
Sunflower Moth ◽  
Homoeosoma Electellum ◽  
Third Instar Larvae

AbstractA standard test for the larvicidal activity of Bacillus thuringiensis (B.t.) against the larvae of the sunflower moth Homoeosoma electellum (Hulst) has been developed. Bioassay parameters investigated include diet preparation, concentration of B.t., effect of formaldehyde, and method of pathogen incorporation in diet. The LC50 for seconded third-instar larvae is 1.24 μg of Dipel® WP ml−1 or 19.8 IU B.t. ml−1 pathogen-incorporated diet. Layering of a pathogen-suspension upon the surface of the diet was not a reliable bioassay technique for H. electellum. The addition of formaldehyde in the diet reduced the slope of the dose–mortality curve but did not change the LC50.

Long lasting persistence of Bacillus thuringiensis serovar. israelensis larvicidal activity in Aedes aegypti (Diptera: Culicidae) breeding places is associated to bacteria recycling

2009 ◽  
Vol 49 (2) ◽  
pp. 186-191 ◽  
Author(s):  
Maria Alice Varjal de Melo-Santos ◽  
Ana Paula de Araújo ◽  
Eugênia Maria Maranhão Rios ◽  
Lêda Regis
Keyword(s):  
Bacillus Thuringiensis ◽  
Aedes Aegypti ◽  
Larvicidal Activity
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