Determination of the preferred two different coccinellid species on different aphid species feeding on broad bean plants

In this study, the orientation of two different predator species [(Coccinella septempunctata L., Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae)) to aphids [Aphis fabae Scopoli and Acyrthosiphon pisum Harris (Hemiptera: Aphididae)] was investigated. Y-type olfactometer which made glass material with one entrance exit openings used in study. Different applications were applied ends predators dropped from end examined. Individuals passing marked area (10 cm) on considered have turned that plant. All trials conducted separately for each prey 10 replications. The counts insects advancing arms 1, 4 8 hours after release. When looking at data obtained first stage it determined mostly gravitate towards leaves infected aphids; second stage, observed C. individuals side contaminated A. pisum, H. A.fabae. plants damaged by herbivorous show an attractive feature predators. Accordingly, concluded chemicals broad bean should be analyzed.