Open AccessRESISTANCE TO GRAIN PROTECTANTS AND PHOSPHINE IN COLEOPTEROUS PESTS OF GRAIN STORED ON FARMS IN NEW SOUTH WALES
Author(s) -
Herron G. A.
Publication year - 1990
Publication title -
australian journal of entomology
Language(s) - English
Resource type - Journals
eISSN - 1440-6055
pISSN - 1326-6756
DOI - 10.1111/j.1440-6055.1990.tb00345.x
Subject(s) - oryzaephilus surinamensis , sitophilus , malathion , biology , fenitrothion , carbaryl , piperonyl butoxide , population , resistance (ecology) , toxicology , insecticide resistance , pesticide , horticulture , agronomy , demography , sociology
Tribolium castaneum (Herbst), T. confusum Jacquelin du Val, Sitophilus oryzae (L.), S. granarius (L.), Oryzaephilus surinamensis (L.) and Rhyzopertha dominica (F.) were collected from farms in grain‐growing areas in southern and northern N.S.W. and bioassayed for resistance to the grain protectants malathion, fenitrothion, bioresmethrin, carbaryl, pirimiphos‐methyl, chlorpyrifos‐methyl and the fumigant phosphine. Results showed that resistance on farms in N.S.W. is similar to resistance reported elsewhere in Australia's grain handling system during the past decade. The only new resistance of practical significance was detected in O. surinamensis where 50% of populations were resistant to fenitrothion (maximum R.F. 68.4x). Fenitrothion resistance was uncommon or not detected in other species. Pirimiphos‐methyl resistance was detected in 70% of O. surinamensis populations (maximum RF 44.2x) and in 1 population of T. castaneum (maximum RF 3.1x). Resistance to chlorpyrifos‐methyl was detected in 39% of the O. surinamensis populations (maximum RF 8.4x), the only species tested. Low level phosphine resistance was detected in all species (maximum RF 2.2x). Malathion resistance was detected in all species except S. granarius . Resistance to bioresmethrin and carbaryl was not detected in R. dominica , the only species tested.