Pest Management Science (2005) 61, 636-642

Ali H. Sayyed, M. Naveed R. Attique, Abdul Khaliq and Denis J. Wright (2005)
Inheritance of resistance and cross-resistance to deltamethrin in Plutella xylostella (Lepidoptera: Plutellidae) from Pakistan
Pest Management Science 61 (7), 636-642
Abstract: A field population of Plutella xylostella (L) from Pakistan was found to be highly resistant to deltamethrin (>500-fold) but had little or no resistance to spinosad, fipronil, indoxacarb, abamectin, Bacillus thuringiensis (Bt) var kurstaki, Bt var aizawai or Cry1Ac when compared with a susceptible laboratory population, Lab-UK. A sub-population was selected for six generations (laboratory G₃-G₈) with deltamethrin (delta-SEL), while a second sub-population was left unselected (UNSEL). Bioassays at G₉ found that selection with deltamethrin gave resistance ratios of >230 compared with UNSEL (>6730 compared with Lab-UK). The delta-selected population showed no apparent cross-resistance to spinosad, fipronil or indoxacarb. Logit regression analysis of F₁ reciprocal crosses between delta-SEL and Lab-UK indicated that resistance to deltamethrin in the delta-SEL population was inherited as an autosomal, incompletely dominant (DLC = 0.67) trait. A direct test of monogenic inheritance based on a back-cross of F₁ progeny with delta-SEL suggested that resistance to deltamethrin was controlled by more than one factor.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Ali H. Sayyed, Denis J. Wright

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plutella xylostella		Pakistan