Methods for field detection of resistance to temephos in simuliids. Larval esterase level and topical application of the insecticide to adults
Mem. Inst. Oswaldo Cruz
;
85(3): 291-7, jul.-set. 1990. tab
Article
in English
| LILACS
| ID: lil-93591
RESUMO
Two practical field methods for indirect detection of simuliid populations resistant to temephos are proposed. The first is based on high esterase activity in resistant larvae and involves adaptations of a filter paper test in which faintly stained spots indicate susceptible populations and strongly stained ones reveal populations resistant to temephos. The second is based on the resistance to the larvicide when adults are topically exposed, and involves the use of diagnostic doses obtained by the comparison between the LD50 for susceptible and resistant populations. The relevance of such methods is discussed in order to help resistance detection in Simulium pertinax Kollar control programmes
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Simuliidae
/
Esterases
/
Insecticides, Organophosphate
Type of study:
Diagnostic study
Limits:
Animals
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
1990
Type:
Article
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