Entomologia Experimentalis et Applicata (2000) 96, 281-287

Brenda Oppert, Richard Hammel, James E. Throne and Karl J. Kramer (2000)
Fitness costs of resistance to Bacillus thuringiensis in the Indianmeal moth, Plodia interpunctella
Entomologia Experimentalis et Applicata 96 (3), 281-287
Abstract: Genetic changes in insects that result in insecticide resistance can also affect their fitness. Here, we report measurements of development time and survival of the Indianmeal moth, Plodia interpunctella (Hübner), to compare the relative fitness of Bacillus thuringiensis (Bt)-susceptible and -resistant colonies. Measurements of larval development time and survival indicated that a fitness cost was associated with resistance to Bt in some Bt-resistant colonies but not others. Comparisons of geographically different populations revealed inherent differences in development time and survival. In most cases, Bt-resistant moths suffered no disadvantage when feeding on a Bt-treated diet. In many cases, the development of Bt-resistant moths on Bt-treated diet was slower than the unselected moths on untreated diet, but it is unclear whether these differences would affect the successful mating of susceptible and resistant moths.
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Link to article at publishers website
Database assignments for author(s): Brenda Oppert, James E. Throne

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
pesticide resistance of pest
Research topic(s) for beneficials or antagonists:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Plodia interpunctella
Bacillus thuringiensis (entomopathogen)	Plodia interpunctella