Population dynamics of Bactrocera dorsalis (Diptera: Tephritidae) in Lujiangba, Yunnan.
Chen Peng, Ye Hui
Author Affiliation: Department of Biology, College of Life Sciences, Yunnan University, Kunming 650091, China.
Journal of Zhejiang University (Agriculture and Life Sciences) 33 : 633-640
Abstract : An annual monitoring of B. dorsalis populations using methyl eugenol baited traps was conducted during 2004-06 in Lujiangba, Yunnan, China. Temperature, rainfall and host plant species were analysed in relation to population fluctuations. Results showed that flies occur all year. The fluctuation is divided into 2: a low tide period from December to April; and a high tide period from May to November, with high abundance in August. Mango, longan, citrus, papaya, lychee and guava were the most preferred by the fly. Stepwise regression analysis showed that from May to November, the monthly mean temperature, monthly mean maximum temperature, monthly rainfall, monthly rainy days number, monthly sunlight hours and relative humidity affected population dynamics. Among these factors, rainy day number and relative humidity were the crucial factors. In the period of December-April, monthly mean and mean maximum temperature were the crucial factors.