Reported Resistance Case(s)

Species: sitophilus oryzae

Order	Family	Common Name(s)	Group	Host
coleoptera	curculionidae	lesser rice weevil	AG	corn, rice, sorghum, stored grain

Active Ingredient: pirimiphos-methyl

MOA: Acetylcholine esterase inhibitors, Organophophates
Group: OP	CAS #: 29232-93-7	Shaugnessy Code: 108102

Resistance Case(s)

Case Id	Year of Report	Type of Resistance	Location	Reference
G22395	2023	Field Evolved Resistance	Pakistan-- Lahore	Khan, H.A.A., and Khan, T. (2023). Mode of inheritance of field-evolved resistance to pirimiphos-methyl in Sitophilus oryzae (Linnaeus) (Coleoptera: Curculionidae). Journal of Stored Products Research, 102.
G22396	2023	Field Evolved Resistance	Pakistan-- Multan	Khan, H.A.A., and Khan, T. (2023). Mode of inheritance of field-evolved resistance to pirimiphos-methyl in Sitophilus oryzae (Linnaeus) (Coleoptera: Curculionidae). Journal of Stored Products Research, 102.
G22807	2023	Lab selected after field-evolved resistance**	Pakistan-- Punyab-- Lahore	Khan, T., Khan, H.A.A., Haider, M.S. et al. (2023). Selection for resistance to pirimiphos-methyl, permethrin and spinosad in a field strain of Sitophilus oryzae: resistance risk assessment, cross-resistance potential and synergism of insecticides. Environ Sci Pollut Res, 30.
G22813	2022	Field Evolved Resistance	Pakistan-- Punjab-- Faisalabad	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.
G22817	2022	Field Evolved Resistance	Pakistan-- Punjab-- Gujranwala	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.
G22820	2022	Field Evolved Resistance	Pakistan-- Punjab-- Dera Ghazi Khan	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.
G22821	2022	Field Evolved Resistance	Pakistan-- Punjab-- Dera Ghazi Khan	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.
G22823	2022	Field Evolved Resistance	Pakistan-- Punjab-- Multan	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.
G22826	2022	Field Evolved Resistance	Pakistan-- Punjab-- Bahawalpur	Khan, T., Haider, M. & Khan, H. (2022). Resistance to grain protectants and synergism in Pakistani strains of Sitophilus oryzae (Coleoptera: Curculionidae). Sci Rep, 12.

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