黄褐天幕毛虫生殖生物学及性信息素基础研究
发布时间：2019-05-19 12:47
【摘要】：黄褐天幕毛虫Malacosoma neustria testacea是危害杏、苹果、梨、山楂和核桃等树木的主要食叶害虫,在国内外均有分布,广泛地分布于我国各省,危害猖獗时能将大面积树木的叶子吃光,严重影响树木光合作用,进而影响树木生长,使果实产量下降。试验结果表明：黄褐天幕毛虫羽化历期40天左右,羽化高峰在6月19日-7月03日,羽化主要集中在17：00-19：00,雌雄平均性比为1：1.19±0.07,未交配雌雄成虫的平均寿命分别为4.13±0.142天和4.57±0.035天,雄蛾的寿命高于雌蛾。在凌晨0：00-3：00内均能观察到雌蛾有明显的求偶行为。成虫交尾高峰在凌晨2：30左右,一日龄的成虫交尾率最高(61.67%±2.89%),并且成虫随着日龄的增加交尾行为逐渐减弱。交尾持续时间最短为20min,最长可达135min。林间诱蛾实验发现,未交配雄蛾和空白对照都没有引诱到成虫,1-6日龄未交配雌蛾均能引诱到雄虫,且1日龄未交配雌蛾诱蛾量最大,凌晨2：00-3：00是诱蛾高峰期；凌晨1：30未交配雌蛾性腺提取物的引诱量最大,1日龄未交配雌蛾性腺提取物对雄蛾的引诱效果最佳。通过气相色谱对黄褐天幕毛虫性信息素腺体提取物和人工合成标准性信息素类似物进行分析对比,结果表明合成的标准化合物Z5E7-12:Ald、Z5E7-12:OH和Z5E7-12:Ac的保留时间分别为16.433±0.018min、19.074±0.015min和22.212±0.023min,与其性信息素腺体提取物中三种组分的保留时间16.431±0.035min、19.092±0.047min和22.249±0.032min基本拟合。由此可以得知黄褐天幕毛虫性信息素的组成成分可能包含Z5E7-12:Ald、Z5E7-12:OH和Z5E7-12:Ac。林间诱蛾试验结果表明Z5E7-12:Ac和Z5E7-12:OH均有一定的引诱活性,并且Z5E7-12:Ac:Z5E7-12:OH为1：1的混合组分引诱效果较佳,但差于活体雌蛾的林间诱捕效果。
[Abstract]:Malacosoma neustria testacea is the main leaf-eating pest of apricot, apple, pear, Hawthorn and walnut, which is widely distributed in all provinces of our country. When the harm is rampant, it can eat up the leaves of a large area of trees. Seriously affect the photosynthesis of trees, and then affect the growth of trees, so that the fruit yield decreased. The results showed that the emergence duration of the caterpillar was about 40 days, the peak of emergence was from June 19 to July 03, and the emergence was mainly concentrated at 17: 00 and 19: 00, and the average sex ratio between male and female was 1: 1.19 卤0.07, and the peak of emergence was from June 19 to July 03, and the average sex ratio between male and female was 1: 1.19 卤0.07. The average life expectancy of unmated male and female adults was 4.13 卤0.142 days and 4.57 卤0.035 days, respectively. the life span of male moths was higher than that of female moths. Obvious courtship behavior of female moths was observed at 0: 00 in the morning and 3: 00 in the morning. The peak of adult mating was about 2:30 in the morning, and the mating rate of one-day-old adults was the highest (61.67% 卤2.89%), and the mating behavior of adults decreased gradually with the increase of age. The shortest duration is 20 min and the longest is 135 min. It was found that the unmated male moths and the blank control did not seduce the adults, and the 1-6-day-old unmated female moths could seduce the male moths, and the 1-day-old unmated female moths induced the largest number of moths, and the peak period was 2: 00 in the morning. At 1:30 in the morning, the amount of gonadal extract of unmated female moths was the largest, and the effect of gonadal extract of unmated female moths on male moths was the best. The sex pheromone gland extract and synthetic standard sex pheromone analogues were analyzed and compared by gas chromatography. the results showed that the synthesized standard compound Z5E7 鈮，
本文编号：2480737
[Abstract]:Malacosoma neustria testacea is the main leaf-eating pest of apricot, apple, pear, Hawthorn and walnut, which is widely distributed in all provinces of our country. When the harm is rampant, it can eat up the leaves of a large area of trees. Seriously affect the photosynthesis of trees, and then affect the growth of trees, so that the fruit yield decreased. The results showed that the emergence duration of the caterpillar was about 40 days, the peak of emergence was from June 19 to July 03, and the emergence was mainly concentrated at 17: 00 and 19: 00, and the average sex ratio between male and female was 1: 1.19 卤0.07, and the peak of emergence was from June 19 to July 03, and the average sex ratio between male and female was 1: 1.19 卤0.07. The average life expectancy of unmated male and female adults was 4.13 卤0.142 days and 4.57 卤0.035 days, respectively. the life span of male moths was higher than that of female moths. Obvious courtship behavior of female moths was observed at 0: 00 in the morning and 3: 00 in the morning. The peak of adult mating was about 2:30 in the morning, and the mating rate of one-day-old adults was the highest (61.67% 卤2.89%), and the mating behavior of adults decreased gradually with the increase of age. The shortest duration is 20 min and the longest is 135 min. It was found that the unmated male moths and the blank control did not seduce the adults, and the 1-6-day-old unmated female moths could seduce the male moths, and the 1-day-old unmated female moths induced the largest number of moths, and the peak period was 2: 00 in the morning. At 1:30 in the morning, the amount of gonadal extract of unmated female moths was the largest, and the effect of gonadal extract of unmated female moths on male moths was the best. The sex pheromone gland extract and synthetic standard sex pheromone analogues were analyzed and compared by gas chromatography. the results showed that the synthesized standard compound Z5E7 鈮，
本文编号：2480737
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