On the population dynamics of Oriental fruit fly in Yunnan Province.
Zhang ZhiYing, He DaYu, She YuPing
Author Affiliation: Kunming Institute of Ecology, Academia Sinica, China.
Acta Phytophylacica Sinica 22 : 211-216
Abstract : Based on horizontal and vertical catches in sex attractant traps and laboratory and field investigations, it was found that there are 4-5 generations of Dacus dorsalis [Bactrocera dorsalis] annually in Yunnan Province, China. The 2nd generation was the most important, feeding on mango, peach and guava fruits. The peak period of adult catches was during June-July, with the exceptions of Citrus and sweet orange orchards (September-October and October-December, resp.). The peak period and number of adult occurrences differed between years. During the same year, the peak period was delayed gradually from south to north, coinciding with the mature periods of fruit trees. In winter, adults were caught at all the sites, except the Kunming Area, with the largest population being caught in Xishuangbanna, an area with high temperature and humidity.