Reported Resistance Case(s)

Species: tetranychus urticae

Order	Family	Common Name(s)	Group	Host
acari	tetranychidae	twospotted spider mite	AG	cotton, fruits, vegetables, walnut, ornamentals

Active Ingredient: dimethoate

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 60155	Shaugnessy Code: 35001

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G10066	2010	Lab selected after field-evolved resistance**	Belgium	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G10062	2010	Lab selected after field-evolved resistance**	Germany-- Berlin	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G10060	2010	Lab selected after field-evolved resistance**	Germany-- Berlin	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G10058	2010	Lab selected after field-evolved resistance**	Netherlands	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G10070	2010	Lab selected after field-evolved resistance**	Greece-- Athens	Khajehali, J., Van Leeuwen, T., Grispou, M., Morou, E., Alout, H., Weill, M., Tirry, L., Vontas, J., Tsagkarakou, A. (2010). Acetylcholinesterase point mutations in European strains of Tetranychus urticae (Acari: Tetranychidae) resistant to organophosphates. Pest Management Science, 66 220-228.
G7288	2005	Unspecified	Belgium	Van Leeuwen, T., Pottelberge, S.V., Tirry, L. (2005). Comparative acaricide susceptibility and detoxifying enzyme activties in field-collected resistant and susceptible strains of Tetranychus urticae.. Pest Management Science, 61 499-507.
G6837	2002	Unspecified	USA-- Kansas	Yang, X., L.L. Buschman, K.Y. Zhu, and D.C. Margolies. (2002). Susceptibility and detoxifying enzyme activity in two spider mite species (Acari: Tetranychidae) after selection with three insecticides. Journal of Economic Entomology, 95(2) 399-406.
G6836	2002	Unspecified	USA-- Kansas	Yang, X., L.L. Buschman, K.Y. Zhu, and D.C. Margolies. (2002). Susceptibility and detoxifying enzyme activity in two spider mite species (Acari: Tetranychidae) after selection with three insecticides. Journal of Economic Entomology, 95(2) 399-406.
G4082	1983	Field Evolved Resistance	France	Brun, L. O., Edge, V. E. and Gutierrez, J. (1983). The occurrence of five Tetranychus spp.. (Acarine: Tetranychidae) in New Caledonia and their response to acaricides. Trop. Pest Management., 29 371-77.
G2726	1975	Field Evolved Resistance	USSR	Siforova, T.A. and Gaznyan, N.V. (1975). Resistance of mites to acaricides (in Russian).. Zashch. Rast. (Mosc.), 9 52.
G2725	1975	Field Evolved Resistance	Japan	Asakawa, M. (1975). Insecticide resistance in agricultural insect pests of Japan.. Jpn. Pestic. Inf., 23 5-8.
G2329	1974	Field Evolved Resistance	United Kingdom	Gould, J. J. (1974). Laboratory and field investigations with organophosphate-resistant Tetranychus urticae.. Ann. Appl. Biol., 74 17-23.
G2328	1974	Field Evolved Resistance	Turkey	Oden, T. (1974). Communication to FAO.
G2327	1974	Field Evolved Resistance	Bulgaria	Balevski, A. (1974). Communication to FAO.
G1620	1970	Field Evolved Resistance	Finland	Markkula, M. and Tittanen, K. (1970). Two-spotted spider mite Tetranychus telarius L.. resistant to aldicarb. Ann. Entomol. Fenn., 36 191-92.
G1519	1969	Field Evolved Resistance	Zimbabwe	(1969). Report of the Fourth Session of the FAO Working Party of Experts on Resistance of Pests to Pesticides.. FAO, Rome 1968.
G1359	1968	Field Evolved Resistance	South Africa	Myburgh, G. (1968). In: FAO 1969.

*The population was created solely by selection and/or genetic manipulation.
**The population was selected further in the laboratory after collection.