Functional and numerical response of Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) on Macrosiphum rosae (L.) (Hemiptera: Aphididae)

In this study, functional and numerical response tests, which are important components in the selection of biological control agent, were carried out. trials, amount food consumed, attack rate (a) handling time (Th) calculated for each developmental period, depending on number preys given after 24 hours. The obtained results evaluated with Holling. experiments, development predator insect was examined certain numbers (5, 10, 20, 40 80) data recorded. This phase trials continued until individuals died. At stage reproductive aphid prey use efficiency calculated. All productions out climate rooms a temperature 27±1 °C, 65±5% RH. Experiments 50 replications growth period densities. According to it determined that periods highest productivity fourth larval adult stages. When from experiments evaluated, observed increased increase H. variegata. Considering all as result concluded variegata is effective M. rosae can be used pest.