《环境昆虫学报》

作者	单位
邢海超，王盼盼，张娟，吴莉莉，夏德萍，赵莉，吕昭智	1.新疆农业大学农学院，乌鲁木齐 830052；2.中国科学院新疆生态与地理研究所，乌鲁木齐 830011；3.郑州植物园，郑州 450042；4.巴州农业技术推广中心，新疆库尔勒 841000；5.惠州仲恺高新区惠环德园学校，广东惠州 516000

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中文摘要:

三叶草夜蛾Scotogramma trifolii Rottemberg是一种多食性的害虫，其在农田生态系统中的种群动态及交配情况尚不清楚。本试验在库尔勒地区连续3年（2013-2015年4-9月）利用智能虫情测报灯监测了三叶草夜蛾的种群动态，并在实验室解剖雌蛾体内精包，评估野外雌蛾的交配情况。研究表明不同年际间相同月份其种群数量变化趋势相同，即每年的4月中下旬、6月中下旬和7月下旬均会出现三叶草夜蛾的种群高峰期；而相同年际内不同月份三叶草夜蛾的种群数量存在变异。解剖数据表明了三叶草夜蛾交配频率平均达到2.7次/头以上，同一年份内和不同年际间均存在一定比例的未成功交配雌蛾，其成功交配比例在55.56%~97.37%，2013年和2015年的成功交配比率较低，低于60%，而2014年的成功交配率却高于80%。通过本研究初步明确了野外三叶草夜蛾交配特征和种群动态，为绿洲农田三叶草夜蛾的综合防治提供了科学依据。

英文摘要:

Scotogramma trifoliiRottemberg is a polyphagous insect pest with a wide host range.The population dynamics and mating characteristics of this specie in oasis agroecosystems have been rarely documented.In this study, we monitored the population dynamics of S.trifolii in the Kuerle region for three consecutive years (from April to September 2013-2015) using intelligent monitoring system. Spermatophore of female moths was dissected to assess the mating success of moths.We found that S.trifolii showed similar population dynamics among three years. However, the abundance varied within each year, and the population peaked in mid late April, mid late June and late July.The mating frequency reached an average of 2.7 times per individual.There is a certain proportion of unsuccessful mating female moths, the rate of mating success ranged from 55.56% to 97.37%（less than 60% in 2013 and 2015， more than 80% in 2014). This study assessed the mating status and population dynamics of S.trifolii in the field, which offered a scientific basis for the integrated control of this pest in oasis farmland.

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