Document Detail

Bioassay for detecting active site insensitivity in horn fly (Diptera: Muscidae) larvae.
MedLine Citation:
PMID:  2050898     Owner:  NLM     Status:  MEDLINE    
A bioassay was used to detect active site insensitivity (knock-down resistance [kdr]) in pyrethroid resistant larvae of the horn fly, Haematobia irritans (L.). The larvae of the resistant population had KD50's 42.0-, 28.1- and 29.2-fold greater to permethrin, fenvalerate and lambda-cyhalothrin, respectively, compared with the susceptible population. In filter paper bioassays, resistant adult horn flies were 17 to 39.1 times less susceptible to the pyrethroids than susceptible adults at LC50. These results further document active site insensitivity as the major mechanism of pyrethroid resistance in the horn fly.
B L Crosby; R L Byford; T C Sparks
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of economic entomology     Volume:  84     ISSN:  0022-0493     ISO Abbreviation:  J. Econ. Entomol.     Publication Date:  1991 Apr 
Date Detail:
Created Date:  1991-07-22     Completed Date:  1991-07-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  2985127R     Medline TA:  J Econ Entomol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  367-70     Citation Subset:  IM    
Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces 88003.
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MeSH Terms
Biological Assay
Insecticide Resistance
Reg. No./Substance:
0/Insecticides; 0/Nitriles; 0/Pyrethrins; 51630-58-1/fenvalerate; 52645-53-1/Permethrin; 68085-85-8/cyhalothrin

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