- Olfactory response of the predator Zetzellia mali to a prey patch occupied by a conspecific predator
- Experimental and Applied Acarology
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- Faculty of Science (FNWI)
- Institute for Biodiversity and Ecosystem Dynamics (IBED)
While searching for food, predators may use volatiles associated with their prey, but also with their competitors for prey. This was tested for the case of Zetzellia mali (Ewing) (Acari: Stigmaeidae), an important predator of the hawthorn spider mite, Amphitetranychus viennensis (Zacher) (Acari: Tetranychidae), in black-cherry orchards in Baraghan, Iran. Using a Y-tube olfactometer, the response of this predatory mite was tested to odour from black-cherry leaves with a conspeciWc female predatory mite, either with or without a female of the hawthorn spider mite when the alternative odour came from blackcherry leaves with the hawthorn spider mite only. Female predators avoided odours from leaves with both a hawthorn spider mite and a conspecific predator, as well as leaves with a conspecific predator only. We discuss whether avoidance emerges in response to cues from the competitor/predator, the herbivore/prey or the herbivore-damaged plant.
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