Drosophila suzukii (Matsumura) - a new invasive insect pest on berry plants in the Central Balkan Mountains -first results

摘要

Drosophila suzukii (Matsumura), (Diptera.Drosophilidae) is a new insect pest in fruit crops, vines and other plant species in Europe and all over the world. It was identified for the first time in Bulgaria in the regions of Blagoevgrad, Kyustendil andPlovdiv in 2014. Because of the free movement of goods within the European Union, the danger of D.suzukii spreading is constantly increasing.Some of the favourite host plants for D.suzukii are berry plants, such as raspberry, blackberry, strawberry and blueberry, which are traditional in the region of the Central Balkan Mountains.Insect traps of the Hungarian company "Csalomon" (VARL) were set for monitoring D.suzukii at the Research Institute of Mountain Stockbreeding and Agriculture in Troyan in the raspberryplantation with 'Willamette', 'Shopska alena' and in blackberry cultivars, such as 'Hull Tornless' and 'Black Satin'.The first mature insects in the traps on raspberry plants were found on June 14, and in the blackberry on July 13, the period when fruitbegan to ripe. During this period, the control was difficult because of the risk of pesticide residues that are dangerous to people.Significant changes in climate conditions in recent years have shown that in Bulgaria this species has real conditions for its developed and would have high biological impact and become a main insect pest for fruit crops, where berry species belongs.