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A method for the rapid detection of malathion resistance inPlodia interpunctella(Hübner) (Lepidoptera: Pyralidae) with further records of resistance

Authors
Journal
Journal of Stored Products Research
0022-474X
Publisher
Elsevier
Publication Date
Volume
18
Issue
3
Identifiers
DOI: 10.1016/0022-474x(82)90011-x
Disciplines
  • Medicine

Abstract

Abstract A method for the rapid diagnosis of resistance to malathion in adult Plodia interpunctella (Hübner) is described. Moths were exposed to a dry film of malathion coating conical flasks and knockdown was used as the criterion of response. A pooter to minimise damage to moths during handling is described. From probit mortality lines a discriminating dose killing all moths of susceptible strains was derived. Of 15 strains of P. interpunctella tested, resistance to malathion was detected in strains from Kenya, Nigeria and the U.S.A. and in strains imported into the U.K. on foodstuffs originating from Argentina, the Republic of South Africa and the U.S.A.

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