Titre du document / Document title

Insecticide resistance in the tropical bedbug Cimex hemipterus

Auteur(s) / Author(s)

KARUNARATNE S. H. P. P. ⁽¹⁾ ; DAMAYANTHI B. T. ⁽¹⁾ ; FAREENA M. H. J. ⁽¹⁾ ; IMBULDENIYA V. ⁽¹⁾ ; HEMINGWAY J. ⁽²⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Zoology, University of Peradeniya, Peradeniya, SRI LANKA
⁽²⁾ Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, ROYAUME-UNI

Résumé / Abstract

Insecticide resistance in the bedbug Cimex hemipterus was investigated using 4211 bedbugs collected from three districts of Sri Lanka. Insecticide bioassays were carried out with discriminating dosages of deltamethrin, permethrin, DDT, malathion, and propoxur. Activity levels of insecticide metabolizing enzymes and the insecticide target site acetylcholinesterase were monitored using biochemical assays. Percentage survivals after DDT, malathion, and propoxur exposure were 41-88%, 18-64%, and 11-41%, respectively. For deltamethrin and permethrin, KT₅₀/KT₉₀ (time to knock-down 50%/90% of the population) values were 0.5-24/1.0-58 and 1.3-10/2.5-47 h, respectively. Both elevated esterase and malathion carboxylesterase mechanisms were present in bedbug populations. Monooxygenase levels were heterogeneous. Organophosphate and carbamate target site acetylcholinesterase, was insensitive in 29-44% of the populations. High DDT resistance was probably due to glutathione S-transferases. Malathion carboxylesterases are mainly responsible for high malathion resistance. High tolerance to both DDT and pyrethroids suggests the presence of 'kdr' type resistance mechanism in one population.

Revue / Journal Title

Pesticide biochemistry and physiology   ISSN 0048-3575   CODEN PCBPBS 

Source / Source

2007, vol. 88, n^o1, pp. 102-107 [6 page(s) (article)] (22 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, San Diego, CA, ETATS-UNIS  (1971) (Revue)

Mots-clés anglais / English Keywords

Sensitivity resistance ; Synanthropic ; Pesticides ; Invertebrata ; Arthropoda ; Insecta ; Heteroptera ; Cimicidae ; Insecticide ; Cimex hemipterus ; Tropical zone ; Pesticide resistance ;

Mots-clés français / French Keywords

Sensibilité résistance ; Synanthrope ; Pesticide ; Invertebrata ; Arthropoda ; Insecta ; Heteroptera ; Cimicidae ; Insecticide ; Cimex hemipterus ; Zone tropicale ; Résistance pesticide ;

Mots-clés espagnols / Spanish Keywords

Sensibilidad resistencia ; Sinantropo ; Plaguicida ; Invertebrata ; Arthropoda ; Insecta ; Heteroptera ; Cimicidae ; Insecticida ; Cimex hemipterus ; Zona tropical ; Resistencia plaguicida ;

Mots-clés d'auteur / Author Keywords

Bedbugs ; Cimex hemipterus ; Insecticide resistance ;

Localisation / Location

INIST-CNRS, Cote INIST : 15733, 35400014709209.0150