TY - JOUR
T1 - Changes in glutathione S-transferase activity in DDT resistant natural Mexican populations of Anopheles albimanus under different insecticide resistance management strategies
AU - Penilla, R. Patricia
AU - Rodríguez, Américo D.
AU - Hemingway, Janet
AU - Torres, José L.
AU - Solis, Francisco
AU - Rodríguez, Mario H.
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Biochemical assays on Anopheles albimanus collected for 3 years in southern Mexico villages after house spraying of a single insecticide [DDT or a pyrethroid (PYR)], a two insecticide mosaic [organophosphate (OP)/PYR] or a three insecticide annual rotation (OP-PYR-carbamate), defined he relative rates of selection of glutathione S-transferase-based resistance. After 3 years of rotation, mosaic and single PYR strategies, there was a decrease in the glutathione S-transferase (GST) activity, returning to susceptible levels, with few variations. In the rotation strategy, GST activity increased significantly in one group of villages, when OP treatment was replaced by the PYR in the 2nd treatment year. While, GST activity increased only in one village out of six continuously PYR-treated in the 1st year. In the DDT-treated villages, one group had increased activity in the 1 st year, but this declined in years 2 and 3; GST activity of the other DDT-treated group were unchanged during the trial. (c) 2006 Elsevier Inc. All rights reserved.
AB - Biochemical assays on Anopheles albimanus collected for 3 years in southern Mexico villages after house spraying of a single insecticide [DDT or a pyrethroid (PYR)], a two insecticide mosaic [organophosphate (OP)/PYR] or a three insecticide annual rotation (OP-PYR-carbamate), defined he relative rates of selection of glutathione S-transferase-based resistance. After 3 years of rotation, mosaic and single PYR strategies, there was a decrease in the glutathione S-transferase (GST) activity, returning to susceptible levels, with few variations. In the rotation strategy, GST activity increased significantly in one group of villages, when OP treatment was replaced by the PYR in the 2nd treatment year. While, GST activity increased only in one village out of six continuously PYR-treated in the 1st year. In the DDT-treated villages, one group had increased activity in the 1 st year, but this declined in years 2 and 3; GST activity of the other DDT-treated group were unchanged during the trial. (c) 2006 Elsevier Inc. All rights reserved.
KW - Anopheles albimanus
KW - Glutathione S-transferase
KW - Insecticide selection pressures
KW - Mexico
KW - Mosaic
KW - Resistance management strategies
KW - Rotation
KW - Vector control
U2 - 10.1016/j.pestbp.2006.01.006
DO - 10.1016/j.pestbp.2006.01.006
M3 - Article
SN - 0048-3575
VL - 86
SP - 63
EP - 71
JO - Pesticide Biochemistry and Physiology
JF - Pesticide Biochemistry and Physiology
IS - 2
ER -