caa a22 4500 388092866 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131441-4 doi S0008347X00010051 pii (NATIONALLICENCE)cambridge-10.4039/Ent131441-4 MONITORING FOR RESISTANCE TO ORGANOPHOSPHORUS, CARBAMATE, AND PYRETHROID INSECTICIDES IN THE ORIENTAL FRUIT MOTH (LEPIDOPTERA: TORTRICIDAE) [Elektronische Daten] Development of resistance to organophosphorus and carbamate insecticides by the Oriental fruit moth, Grapholita molesta (Busck), has caused great concern regarding the sustainability of peach production in Ontario, Canada. Thus, a resistance management program was implemented and a procedure was developed to monitor for resistance to insecticides in adult moths. Diagnostic concentrations needed to distinguish susceptible genotypes from resistant individuals were determined to be carbofuran (0.1 μg per vial), carbaryl (1.0 μg per vial), malathion (0.5 μg per vial), and cypermethrin (2.5 μg per vial). Significant survival of field-collected moths to diagnostic concentrations of cypermethrin suggested that resistance to pyrethroids might be widespread. The seasonal patterns of resistance of several Oriental fruit moth populations from the Niagara Peninsula of Ontario indicated a decrease in frequencies of resistance to all insecticides tested from 1996 through 1998. Resistance levels were unstable, thus suggesting that resistance could be successfully managed. Our data confirmed the usefulness of the vial test to monitor for resistance to insecticides in the adult Oriental fruit moth, and provided the basis for the development of a resistance management strategy designed to extend the efficacy of all classes of insecticides used for control. Copyright © Entomological Society of Canada 1999 Kanga L.H.B. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 Pree D.J. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 van Lier J.L. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 Walker G.M. Ontario Ministry of Agriculture, Food and Rural Affairs, Vineland Station, Ontario, Canada LOR 2E0 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 441-450 0008-347X 131:4<441 1999 131 TCE https://doi.org/10.4039/Ent131441-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131441-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kanga L.H.B. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 NATIONALLICENCE 700 1- Pree D.J. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 NATIONALLICENCE 700 1- van Lier J.L. Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, Vineland Station, Ontario, Canada LOR 2E0 NATIONALLICENCE 700 1- Walker G.M. Ontario Ministry of Agriculture, Food and Rural Affairs, Vineland Station, Ontario, Canada LOR 2E0 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 441-450 0008-347X 131:4<441 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge