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Xiaozhen Li,Haiyan Yang,Kaiping Hu,Jianguo Wang 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.1
Bactrocera (Zeugodacus) tau (Walker) (Diptera: Tephritidae), a quarantine pest of international concern, has become widespread and economically important in South and Southeast Asia. It has been introduced into north Jiangxi from Fujian, China and become a threat to local fruits and vegetables. Field trapping with cuelure (CUE) as lure is needed, not only for monitoring population dynamics of B. tau but also for direct control of population. In this study, we collected weekly tephritids from 4 CUE-baited McPhail traps every year from 2008 to 2015, analysing seasonal and inter-year B. tau population fluctuations. The total number of captured tephritids reached 7811, including B. tau (5321), B. scutellata (Hendel) (2375) and B. cucurbitae (Coquillett) (1 1 5). Among them, B. tau was the dominant species. It had 3–4 generations a year in north Jiangxi with high generation overlapping. The average number of trapped B. tau males did not differ significantly in different years, while the average monthly number showed large variation from June to December. No B. tau males were trapped before June in any year. Adult males were present from mid-June to late December, with distinct peaks between late August and mid-October. This fruit fly can withstand below 13℃ as a monthly minimal temperature under field conditions, and adult capture rates were significantly related to monthly minimal temperature and monthly total precipitation. These results can be used to predict the occurrence time and population size of B. tau in different seasons, enabling growers and extension personnel to take efficient management measures before they damage the host crops.