Functional Response of the Predator Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae) feeding on Macrosiphum rosae (L.) (Hemiptera: Aphididae)
عنوان دوره: دومین کنگره بین المللی حشره شناسی ایران
نویسندگان
چکیده
In the world, approximately 15,000 tons of rose flowers are produced. Turkey and Bulgaria are the important countries that produce roses. In recent years, rose has become more important as the need for rose products is increased. There are different pests on the roses. The aphids found in almost every region where rose cultivation causes significant economic losses. Macrosiphum rosae (L.) (Hemiptera: Aphididae), which is a rose aphid, is damaged by feeding on roses. For this reason, intensive studies have been carried out recently on methods of biological control against these pests. One of the beneficial organisms seen as effective on these pests is predator insect Hippodamia variegata (Goeze) (Coleoptera: Coccinellidae).
In this study, the functional response of H. variegata is discussed. For this purpose, M. rosae was given in different densities (5, 10, 20, 40 and 80) as food. As a result of daily checks, the number of eggs consumed and the number of eggs given by the hunter was recorded. Furthermore, using the obtained data, the life table parameters were obtained in the changing hunting densities of the predator. The study was carried out in climatic chambers set to 27±1°C temperature, 60±5% humidity and 16:8 hours photoperiod. Holling curves were created for each larval and adult periods and the results were discussed.
In this study, the functional response of H. variegata is discussed. For this purpose, M. rosae was given in different densities (5, 10, 20, 40 and 80) as food. As a result of daily checks, the number of eggs consumed and the number of eggs given by the hunter was recorded. Furthermore, using the obtained data, the life table parameters were obtained in the changing hunting densities of the predator. The study was carried out in climatic chambers set to 27±1°C temperature, 60±5% humidity and 16:8 hours photoperiod. Holling curves were created for each larval and adult periods and the results were discussed.
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