Journal of Economic Entomology (1994) 87, 1632-1635

Michal Hurej and James D. Dutcher (1994)
Indirect effect of insecticides on convergent lady beetle (Coleoptera: Coccinellidae) in pecan orchards
Journal of Economic Entomology 87 (6), 1632-1635
Abstract: Indirect toxicity through feeding on insecticide-treated prey was determined for five insecticides at two concentrations each to larvae and adults of convergent lady beetle, Hippodamia convergens Guérin-Méneville. Endosulfan (0.375 and 0.75 g [AI]/liter), carbaryl (1.2 and 2.4 g [AI]/liter), phosmet (0.375 and 0.75 g [AI]/liter), methomyl (0.225 and 0.45 g [AI]/liter), and esfenvalerate (0.015 and 0.03 g [AI]/liter) were toxic to larvae and adults when convergent lady beetles were fed insecticide-treated yellow pecan aphids, Monelliopsis pecanis Bissell. Esfenvalerate was a fast-acting insecticide, killing all tested convergent lady beetle life stages 1 h after feeding on treated yellow pecan aphids. Carbaryl and phosmet were slow-acting insecticides, causing the greatest mortality after 48 h. Methomyl was the only insecticide that did not cause 100% mortality to adult convergent lady beetles 48 h after feeding on insecticide-treated yellow pecan aphids, at both rates tested.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): James D. Dutcher, Michal Hurej

Research topic(s) for pests/diseases/weeds:
health/environmental effects of pesticides
Research topic(s) for beneficials or antagonists:
resistance to pesticides

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Monelliopsis pecanis
Hippodamia convergens (predator)	Monelliopsis pecanis