European Journal of Entomology (2012) 109, 135-137

B. Frechette, C. Vincent, P. Giordanengo, Y. Pelletier and E. Lucas (2012)
Do resistant plants provide an enemy-free space to aphids?
European Journal of Entomology 109 (1), 135-137
Abstract: An experiment was conducted to compare the predation efficiency of the coccinellids Harmonia axyridis and Coleomegilla maculata on potato plants, Solanum tuberosum, and on a wild aphid-resistant species, Solanum tarijense. Harmonia axyridis females reduced aphid populations more than C. maculata females. Aphid predation by the predators was reduced on S. tarijense compared to S. tuberosum. Coleomegilla maculata spent less time on S. tarijense than on S. tuberosum. Harmonia axyridis spent the same amount of time on both plant species. The plant species did not affect IGP between larvae. Compared to S. tuberosum, the resistant plant offers M. persicae an enemy-free space against both coccinellid predators.
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Database assignments for author(s): Bruno Frechette, Charles Vincent, Philippe Giordanengo, Éric Lucas

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Myzus persicae	Potato (Solanum tuberosum)
Harmonia axyridis (predator)	Myzus persicae	Potato (Solanum tuberosum)	Canada (east)
Coleomegilla maculata (predator)	Myzus persicae	Potato (Solanum tuberosum)	Canada (east)