《环境昆虫学报》

柑桔大实蝇Bactrocera minax是柑桔类植物果实的重要害虫，以往对该虫的发生监测仅局限于通过果园诱集和室内外养蛹监测成虫的发生期。本研究综合应用室外养蛹、桔园系统调查、成虫诱集和蛆果解剖等技术手段，以期了解柑桔大实蝇的产卵进度、幼虫发育进度、蛆果落地进度、幼虫化蛹进度以及蛹的羽化进度。研究结果表明，重庆地区柑桔大实蝇产卵盛期为6月下旬-7月上旬，高峰期为6月下旬末-7月初；一龄、二龄和三龄幼虫的发生盛期分别为9月中旬-10月初、10月上旬-下旬和10月中旬-11月初；受害蛆果落地盛期为10月上旬-下旬，与二龄和三龄幼虫的发生盛期吻合；室外养蛹的成虫羽化盛期为5月上旬-中旬末，但果园成虫诱集的盛期为6月中旬-下旬，较室外养蛹的成虫发生盛期推迟30 d左右，对出现此种情况的原因作者做了初步分析。研究结果还表明，各虫态的累计发生进度均可用逻辑斯缔方程拟合，从而可计算出各虫态发生进度为16%、50%和84%的始盛期、高峰期和盛末期。研究结果对于柑桔大实蝇的发生期预测和防治具有重要指导意义。

英文摘要:

The Chinese citrus fly Bactrocera minax is one of important pests devastating citrus. Previous occurrence monitor on the fly was limited to by outdoor luring and pupae culturing. In the current study, a series of techniques and methods including outdoor pupae culturing, systematic investigation, adult trapping and maggot fruit dissection were applied to clarify laying progress, larval development progress, fruit landing progress, pupation and emergency progress. The results revealed that the occurrence dynamics of the fruit fly in Chongqing was as follows: laying peak was between the third ten days of June and the first ten days of July; occurrence peaks of the first, second and third stages of larva were between the second ten days of September and early October, the first and third ten days of October and the second ten days of October and early November, respectively; the landing peak of maggot fruit was between first and third ten days of October, consistent with the occurrence peak of second and third stages of larva; the peak of adult trapping in orchards was between the second and third ten days of June, 30 days latter than outdoor pupae culturing. Besides, the cumulative occurrence progresses of various stages were fitted by Logistic equation and the calculated occurrence progress including beginning, apex and ending of the peak can be obtained. The outcome provides some important guideline significance for occurrence forecast and control of the fruit fly.

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