香蕉球茎象甲成虫田间活动规律
Temporal and spatial activity of adult Cosmopolites sordidus(Germar) in a banana plantation
李科明1, 2** 李 嘉3 金志强1 彭正强2***
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DOI：10.7679/j.issn.2095-1353.2015.119
作者单位：1. 中国热带农业科学院海口实验站，海口 570102；2. 中国热带农业科学院环境与植物保护研究所，海口 571101；3. 沈阳农业大学植物保护学院，沈阳 110866
中文关键词：香蕉球茎象甲，成虫，田间，活动规律
英文关键词：Cosmopolites sordidus, adult, field condition, activity
中文摘要：【目的】 明确香蕉球茎象甲Cosmopolites sordidus (Germar) 成虫在田间的活动规律，为香蕉球茎象甲成虫的防治提供科学依据。【方法】 利用诱捕器诱捕研究了海南省澄迈县香蕉园香蕉球茎象甲成虫的田间活动规律。【结果】 香蕉球茎象甲成虫主要在香蕉叶鞘及叶柄附近飞行，距地面160 cm的单个诱捕器的香蕉球茎象甲诱捕量为26.5头，显著多于距地面250 cm的单个诱捕器的香蕉球茎象甲诱捕量14.3头和距地面0 cm的单个诱捕器的香蕉球茎象甲诱捕量14.2头。在田间飞行时，香蕉球茎象甲在东西南北各方位上的成虫诱捕量没有显著差异（P>0.05），说明成虫没有明确的偏好方向。在昼夜节律上，香蕉球茎象甲成虫集中在傍晚至凌晨时分活动，其中16:00至翌日4:00之间雌、雄成虫的诱捕量分别占全天的100%和92%。【结论】 香蕉球茎象甲成虫在田间的昼夜活动和飞行高度上呈现明显规律性，为引诱剂、性诱剂的使用等成虫防治关键技术的研发与应用提供了科学依据。
英文摘要：
[Objectives] To determine the activity of adult Cosmopolites sordidus (Germar) in banana plantations and provide a scientific basis for the control of this species. [Methods] The activity of adult C. sordidus in banana plantations in Chengmai in Hainan province was studied using traps. [Results] The results showed that C. sordidus adults hovered mainly near the sheath and petioles of bananas. Insect traps were hung at three different heights (160, 250 and 0 cm) above ground. The number of insects trapped at 160 cm was significantly higher than at 250 cm (14.3 insects per trap) and 0 cm (14.2 insects per trap). There was no significant difference in the number of adults trapped in the east, west, south and north of the plantation (P>0.05), which indicates that C. sordidus adults do not tend to fly in any particular direction in banana fields. With respect to circadian rhythms, C. sordidus adults were mainly active from evening to early morning; 100% of females and 92% of males were trapped between 16:00 and 4:00 am. [Conclusion] C. sordidus adults have well defined patterns of circadian activity and flight height. This information provides a scientific basis for developing and implementing control measures, including attractants and sex pheromone that may ultimately help to control C. sordidus in banana plantations.