Investigation on the Adult Population Fluctuations of Coroebus rubi (L.) (Coleoptera: Buprestidae) on Raspberry in Bursa Province in Turkey

1Bayer Turk Chemical Company, 858 Street, 5/1, 35251, Konak, Izmir, Turkey
2University of Uludag, Faculty of Agriculture, Department of Plant Protection, Gorukle Campus, 16384, Bursa, Turkey


KAYA, MEHMET and BAHATTIN KOVANCI, 2004. Investigation on the adult population fluctuations of Coroebus rubi (L.) (Coleoptera: Buprestidae) on raspberry in Bursa province in Turkey. Bulg. J. Agric. Sci., 10: 669-673

This study was carried out in Bursa in 1996, 1997 and 1999. The adult population fluctuations of Coroebus rubi (L.) were investigated by the using visual control method via counts made once or twice a week during a one hour period in an area of 0.1 hectare and the number of adults was evaluated weekly. As a result, the first adults of C. rubi were determined in late May or early June in 1996, 1997, and 1999, depending on the area where the raspberry plantations were located; and on the time where the flowers of the raspberry plants dropped and the fruits formed on the superior racemes. The adult population reached a peak between mid-June and mid-July varying according to the years and the time when the raspberry plants were at harvesting stage. The number of adults during the peak period changed between 3 and 82 adults/0.1 hectare per week, depending on the site of the orchard and the year. The duration of the adult flight period changed between 35 and 70 days ending in late July or early August, depending on site and year. The total number of adults counted in raspberry orchards during the flight period was minimum of 10 adults and maximum of 227 adults/0.1 hectare. Only one flight period of C. rubi was observed in all research areas. Therefore, it was concluded that the insect gave one generation in a year.

Key words: Coroebus rubi, population fluctuations, raspberry, Bursa