An insensitive acetylcholinesterase in Culex pipiens (Diptera: Culicidae) from Portugal

Michel Raymond (), Denis Bourguet () and Ruben Capela
Additional contact information
Michel Raymond: UMR ISEM - Institut des Sciences de l'Evolution de Montpellier - Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement - EPHE - École Pratique des Hautes Études - PSL - Université Paris Sciences et Lettres - UM - Université de Montpellier - Institut de recherche pour le développement [IRD] : UR226 - CNRS - Centre National de la Recherche Scientifique
Denis Bourguet: UMR CBGP - Centre de Biologie pour la Gestion des Populations - Cirad - Centre de Coopération Internationale en Recherche Agronomique pour le Développement - UM - Université de Montpellier - IRD [Occitanie] - Institut de Recherche pour le Développement - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement - Institut Agro - Montpellier SupAgro - Institut Agro - Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement

Post-Print from HAL

Abstract: Resistance mechanisms of a strain (PRAIAS) of northern house mosquito, Cu-lex pipiens L., collected in Portugal in 1993, and highly resistant to organophosphates and carbamates, were investigated by comparing the resistance characteristics to 3 organophos-phorous (temephos, chlorpyrifos, malathion) and 1 carbamate (propoxur) insecticides in the presence or absence of synergists; and by determining the possible occurrence of overpro-duced esterases or insensitive acetylcholinesterase (AChE). The reference strain MSE from southern France, with an insensitive AChE, was included in all analyses for comparison. For organophosphorous insecticides, resistance in PRAIAS was caused by an insensitive AChE and an increase in oxidative metabolism. although the 2nd mechanism has only a marginal effect. For propoxur, the insensitive AChE was the only resistance mechanism detected. Biochemical properties of both the French and Portuguese insensitive AChEs were similar. We cannot exclude the possibility that PRAIAS and MSE strains possess exactly the same insensitive AChE allele.

Keywords: Culex pipiens; insensitive acetylcholinesterase; insecticide resistance (search for similar items in EconPapers)
Date: 1996
Note: View the original document on HAL open archive server: https://hal.inrae.fr/hal-02686504v1
References: View complete reference list from CitEc
Citations:

Published in Journal of Economic Entomology, 1996, 89 (5), pp.1060-1066. ⟨10.1093/jee/89.5.1060⟩

Downloads: (external link)
https://hal.inrae.fr/hal-02686504v1/document (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:hal:journl:hal-02686504

DOI: 10.1093/jee/89.5.1060

Access Statistics for this paper

More papers in Post-Print from HAL
Bibliographic data for series maintained by CCSD ().