Agriculture & Agri-food Canada, Potato Research Centre, 850 Lincoln Rd., P.O. Box 20280, Fredericton, NB E3B 4Z7, Canada.
J Econ Entomol. 2010 Oct;103(5):1613-20. doi: 10.1603/ec09421.
The flight take-off activity of Colorado potato beetles, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), was significantly higher at a landscape-protected than at semiexposed and exposed sites in a 2-yr field study. In both years, mean daylight temperature, solar radiation, and relative humidity were generally similar at all sites, but wind speed was lower at the protected site than at the exposed sites. Results suggest that wind was the limiting abiotic factor for flight take-off at the exposed site. Caged beetles exposed to constant wind speeds of 3.4, 4.7, and 7.0 m/s showed a significant corresponding decrease in number of flight take-off. There was no cumulative effect of wind exposure on the readiness of the beetles to fly, suggesting that wind acts as a physical barrier to flight take-off. It should be possible to reduce Colorado potato beetle flight dispersal by selecting fields most exposed to wind over landscape-protected fields when rotating potato, Solanum tuberosum L., crops.
在为期两年的田间研究中，与半暴露和暴露地点相比，科罗拉多马铃薯甲虫（Leptinotarsa decemlineata（Say））（鞘翅目：叶甲科）的飞行起飞活动在景观受保护的地点明显更高。在这两年中，所有地点的白天平均温度、太阳辐射和相对湿度通常都相似，但受保护地点的风速低于暴露地点。结果表明，在暴露地点，风是飞行起飞的限制非生物因素。暴露于 3.4、4.7 和 7.0 m/s 恒定风速的笼养甲虫，其飞行起飞的数量明显减少。风暴露对甲虫飞行准备的累积效应没有，这表明风是飞行起飞的物理障碍。在轮作马铃薯（Solanum tuberosum L.）作物时，通过选择最受风影响的田地而不是景观受保护的田地，可以减少科罗拉多马铃薯甲虫的飞行扩散。
