首页> 美国政府科技报告 >Release Rates of Methylcyclohexenone and Verbenone from Bubble Cap and Bead Releasers Under Field Conditions Suitable for the Management of Bark Beetles in California, Oregon, and Alaska.
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Release Rates of Methylcyclohexenone and Verbenone from Bubble Cap and Bead Releasers Under Field Conditions Suitable for the Management of Bark Beetles in California, Oregon, and Alaska.

机译:适用于加利福尼亚州,俄勒冈州和阿拉斯加州树皮甲虫管理的田间条件下泡罩和珠子释放剂中甲基环己烯酮和马鞭草的释放率。

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摘要

Devices releasing antiaggregation pheromones, such as MCH (3-methyl-2-cyclohexen-1-one) and verbenone (4-methylene- 6,6-dimethylbicyclo (3.1.1)hept-2-ene), are used experimentally to manipulate destructive populations of bark beetles. Two slow release devices, bubble caps attached to boles of trees and granular beads placed on the ground, were tested in forests of California, Oregon, and Alaska to determine their release rates. The hypothesis was that ambient air and soil temperatures were major determinants in the release rates of the releaser devices. Release ratesof both bubble caps and bead differed greatly. The fastest rate was for bubble caps at a warm, California pine (Pinus spp.) site where it was 15times faster than the rate at a cool Sitka spruce (Picea sitchensis Bong. Carr.) site in Alaska. Beads released MCH quickly and were rendered ineffective in less than 2 weeks. Little or no release occurredthereafter, regardless of the amount of pheromone remaining in the bead,or litter layer temperature. Release rates determined under field conditions are useful for the field entomologist and are vital to the development of models for semiochemical dispersion.

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