Strategies of a bark beetle, Pityogenes bidentatus, in an olfactory landscape
Strategies of a bark beetle, Pityogenes bidentatus, in an olfactory landscape
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DOI：
10.1007/s001140050768
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发表时间：
2000-11-01
影响因子：
--
通讯作者：
Birgersson, G
中科院分区：
文献类型：
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作者：
Byers, JA;Zhang, QH;Birgersson, G
非寄主桦树（桦）和挪威云杉（云杉）的叶子或树皮中的挥发物显著降低了树皮甲虫对其聚集信息素成分（顺式马鞭草酚和大二醇）的吸引力。此外，寄主苏格兰松（Pinus sylvestris）的针叶和树皮的气味同样抑制了吸引力。松和云杉的单萜烯（α -蒎烯、β -蒎烯、松烯烯和3-蒈烯）以及乙醇、硫醇和一些非寄主绿叶醇[(Z)-3-己烯-1-醇，(E)-2-己烯-1-醇和1-己醇]也减少了渔获量。从田间测试的植物组织中收集的挥发物表明，它们释放的单萜烯的数量与抑制反应的合成物相似。这些抑制化合物的各种植物和昆虫来源表明，在复杂的嗅觉环境中，双头棘甲虫已经进化出几种策略，通过避开非寄主和不合适的寄主树来提高其适应性。
Volatiles from leaves or bark of nonhost birch (Betula pendula) and Norway spruce (Picea abies) dramatically reduced the attraction of the bark beetle, Pityogenes bidentatus (Coleoptera: Scolytidae), to their aggregation pheromone components (cis-verbenol and grandisol) in the field. In addition, odors from both the needles and bark of the host Scots pine (Pinus sylvestris) similarly inhibited attraction. Monoterpenes of pine and spruce (alpha -pinene, beta -pinene, terpinolene, and 3-carene) as well as ethanol, chalcogran and some nonhost green leaf alcohols [(Z)-3-hexen-1-ol, (E)-2-hexen-1-ol, and 1-hexanol], also reduced catches. Collections of volatiles from the field-tested plant tissues indicated they released monoterpenes in amounts similar to the synthetics that inhibited responses. The various plant and insect sources of these inhibitory compounds indicate that P. bidentatus bark beetles have evolved several strategies to increase their fitness by avoiding nonhost and unsuitable host trees in a complex olfactory landscape.