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Cytochrome P-450-based resistance mechanism and pyrethroid resistance in the field Anopheles albimanus resistance management trial

Penilla, R. P., Rodriguez, A. D., Hemingway, Janet ORCID:, Trejo, A., Lopez, A. D. and Rodriguez, M. H. (2007) 'Cytochrome P-450-based resistance mechanism and pyrethroid resistance in the field Anopheles albimanus resistance management trial'. Pesticide Biochemistry and Physiology, Vol 89, Issue 2, pp. 111-117.

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The relative rates of cytochrome P-450 selection in southern Mexican Anopheles albimanus populations were investigated during a 3 years indoor residual house spraying intervention with a pyrethroid (PYR) or DDT, a mosaic of organophosphate (OP)-PYR, and the annual rotation of OP-PYR-carbamate (CARB). This insecticide resistance mechanism, initially evenly spread in the mosquito population, correlated with PYR resistance during the second treated year, when cytochrome P-450 contents increased in most villages of the PYR, rotation and mosaic schemes. However, by the third year, mean cytochrome P-450 contents declined to susceptible levels in mosquitoes of the rotation and one mosaic group but not in the PYR-treated villages. In DDT-treated villages, a continuous decrement of cytochrome P-450 levels occurred since the first treatment year, and susceptible levels were observed at the end of the intervention. Most correlations of cytochrome P-450 levels and PYR resistance were lost during the third year, indicating that another mechanism evolved in resistant mosquito populations. (C) 2007 Elsevier Inc. All rights reserved.

Item Type: Article
Uncontrolled Keywords: anopheles albimanus monooxygenases cytochrome p-450 resistance management strategies insecticide selection pressures vector control mosaic rotation mexico culex-quinquefasciatus say insecticide resistance malaria vector drosophila-melanogaster blattella-germanica elevated oxidase house-fly expression gene p450
Subjects: QX Parasitology > Insects. Other Parasites > QX 515 Anopheles
QX Parasitology > Insects. Other Parasites > QX 600 Insect control. Tick control
Faculty: Department: Groups (2002 - 2012) > Vector Group
Digital Object Identifer (DOI):
Depositing User: Ms Julia Martin
Date Deposited: 08 Sep 2010 15:47
Last Modified: 06 Feb 2018 13:01


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