Llusià J, Peñuelas J
Unitat Ecofisiologia CSIC, Centre de Recerca Ecològica i Aplicacions Forestals, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, Catalonia, Spain.
Exp Appl Acarol. 2001;25(1):65-77. doi: 10.1023/a:1010659826193.
Emission rates of volatile organic compounds (VOCs) from Pirus malus L. subsp. mitis (Wallr.) var. Golden Delicious and var. Starking attacked by the phytophagous mite Panonychus ulmi Koch, and their attractiveness to the predatory mites Amblyseius andersoni Chant and Amblyseius californicus McGregor, were studied during three years. A large variability was found in the emission of individual VOCs depending on the infestation, the apple tree variety and the date. There were larger total VOC emission rates and larger total VOC leaf concentrations in apple trees attacked by phytophagous mites, especially in the var. Starking. In infested trees of this variety, there were also more predatory mites. An olfactometer assay showed that predatory mites preferentially chose branches infested by Panonychus ulmi (85% went to infested branches vs 15% to uninfested control branches) indicating that volatiles may be used as cues to find their prey.
在三年时间里，对受植食性螨类苹果全爪螨（Panonychus ulmi Koch）侵害的苹果（Pirus malus L. subsp. mitis (Wallr.)）品种金冠（Golden Delicious）和红星（Starking）挥发性有机化合物（VOCs）的排放率，以及它们对捕食性螨类安德逊钝绥螨（Amblyseius andersoni Chant）和加州钝绥螨（Amblyseius californicus McGregor）的吸引力进行了研究。研究发现，取决于侵染情况、苹果树品种和日期，单个VOCs的排放存在很大差异。受植食性螨类侵害的苹果树中，总VOC排放率和总VOC叶片浓度更高，尤其是在红星品种中。在该品种受侵染的树木中，捕食性螨类也更多。嗅觉测定试验表明，捕食性螨类优先选择受苹果全爪螨侵染的枝条（85%前往受侵染枝条，而15%前往未受侵染的对照枝条），这表明挥发性物质可能被用作寻找猎物的线索。
