不同处理方式对美国白蛾的诱捕效果研究

Study on Trapping Effect of Different Treatment Methods on American White Moth

美国白蛾是源发于北美洲的一种外来入侵种,具有“趋光”“趋味”“喜食”3个特性,对气味较为敏感,特别是对腥、香、臭味最敏感,一般在卫生条件较差的厕所、畜舍、臭水坑等周围树木极易发生疫情,为此分析了不同植物挥发物对美国白蛾性信息素的增效效果、不同波段LED灯对美国白蛾的诱捕效果和美国白蛾的昼夜活动特点。实验结果表明:①6-甲基-5-庚烯-2-酮和β-罗勒烯以7∶3的比例混合后可以显著增加美国白蛾性信息素的诱捕效果,相对诱捕率达28.33%;②LED灯355~360 nm波段的相对诱捕率为60.33%,是所有实验波段中诱捕效果最好的;③美国白蛾具有明显的昼伏夜出特点,主要活动时间为02:00—04:00,该时间段的相对诱捕率为28.02%。

The American white moth is an alien invasive species originating from North America.It has three characteristics of“phototaxis”,“taste”and“appetite”.It is sensitive to odors,especially to fishy,fragrant,and stinky odors.Generally,the trees around the toilets,livestock houses and stinky water pits with poor sanitary conditions are prone to epidemic.This paper analyzes the synergistic effects of different plant volatiles on the sex pheromone of the American white moth,the trapping effect of LED lights at different wavelengths on the American white moth and the diurnal activity characteristics of the American white moth.The results show that:(1)The mixture of 6-methyl-5-hepten-2-one andβ-ocimene at a ratio of 7:3 can significantly increase the trapping effect of the sex pheromone of the American white moth,with a relative trapping rate of 28.33%;(2)The relative trapping rate of LED lamp in 355-360 nm band is 60.33%,which is the best among all experimental bands;(3)The American white moth is nocturnal from 02:00 to 04:00,and the relative trapping rate is 28.02%.