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Author Kilpinen, Ole ♦ Kristensen, Michael ♦ Vagn Jensen, Karl Martin
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2011
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health
Subject Keyword Immunology ♦ Medical Microbiology ♦ Microbiology
Abstract Bed bug, Cimex lectularius L., populations were investigated for resistance against permethrin and chlorpyrifos in a topical application bioassay, after an initial establishment of a discriminating dose with a susceptible population. For both insecticides, ca. two times the lethal dose LD99 was selected: 2,560 ng of permethrin and 200 ng of chlorpyrifos per bed bug, respectively. Bed bugs were collected from infested homes in Denmark at ten locations and bred in the laboratory. The frequency of permethrin-resistant individuals was high in Danish bed bug populations as susceptible individuals were only found in three of ten populations. In contrast, the frequency of chlorpyrifos-resistant individuals was low in Danish bed bug populations, but resistant individuals were found in five of ten populations. To test the significance of the observed resistance, we performed tarsal contact test with commercially available insecticides. The test indicated that both a permethrin and a deltamethrin product had very low efficacy against the field-collected bed bug populations. Despite the reduced sensitivity to synthetic pyrethroids, all populations tested in the tarsal test on the commercial product with micro-encapsulated chlorpyrifos resulted in close to 100% mortality.
ISSN 09320113
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2011-05-28
Publisher Place Berlin/Heidelberg
e-ISSN 14321955
Journal Parasitology Research
Volume Number 109
Issue Number 5
Page Count 4
Starting Page 1461
Ending Page 1464


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Source: SpringerLink