Bark and ambrosia beetle (Coleoptera: Scolytidae) responses to volatiles from aging loblolly pine billets
Bark and ambrosia beetle (Coleoptera: Scolytidae) responses to volatiles from aging loblolly pine billets
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DOI：
10.1093/ee/28.4.638
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发表时间：
1999-08-01
影响因子：
1.7
通讯作者：
Berisford, CW
中科院分区：
文献类型：
--
作者：
Flechtmann, CAH;Dalusky, MJ;Berisford, CW
许多种类的树皮甲虫和凤仙花甲虫使用寄主挥发物作为繁殖地点的线索。为了确定松材坯在老化过程中所释放的不同挥发物，确定松材坯的到达顺序，并将挥发物释放量与甲虫捕获量联系起来，本研究共捕获了25种松材坯。在这一时期的开始，树皮甲虫更容易被坯吸引。而凤仙花甲虫的出现较晚。在树皮甲虫,Dendroctonus terebrans (Olivier)更吸引在3周后是砍树,Hylastes清塞音Eichhoff坚持2周。第2周和第3周主要吸引斑鸠（Pityophtorus pulicarius, Zimmermann），第3周和第4周主要吸引大Ips （Ips grandicollis, Eichhoff）。结果表明：4 ~ 6周对木屑的吸引程度高于木屑，6周对短毛木屑和加利福尼亚木屑的吸引程度高于木屑。8周后，坯料对所有侧弯虫的吸引力明显下降。在捕虫期间收集到的挥发物包括15种碳氢单萜、18种氧合单萜、4-烯丙烯醚和乙醇。随着时间的推移，碳氢单萜和4-烯丙烯醚的含量急剧下降，但含氧单萜和乙醇的含量在第4-6周增加，之后也有所下降。在某些种类的甲虫中，某些钢坯挥发物与捕获量有很好的相关性，但其生物学意义不能确定。
Many species of bark and ambrosia beetles use host volatiles as cues for breeding site location. In a study where the objectives were to identify the different volatiles released by Pinus taeda L. billets as they age, to determine the arrival sequence of scolytids (Colcoptera: Scolytidae), and to correlate volatile emission by the billets with beetle catches, 25 species of scolytids were trapped. Bark beetles were more attracted to the billets in the beginning of the period. whereas ambrosia beetles arrived later. Among the bark beetles, Dendroctonus terebrans (Olivier) was significantly more attracted during the Ist 3 wk after tree felling, Hylastes tenuis Eichhoff in the Ist 2 wk. Pityophtorus pulicarius (Zimmermann) in weeks 2 and 3, and Ips grandicollis (Eichhoff) was more attracted on weeks 3 and 4. Among the ambrosia beetles, Xyleborinus saxeseni (Ratzeburg) was more attracted to billets during weeks 4-6, whereas Xyleborus pubescens Zimmermann and Xyleborus californicus Wood were more attracted during week 6. The billets showed marked decline in attractiveness to all scolytids after 8 wk. Volatiles collected during the beetle trapping periods included 15 hydrocarbon monoterpenes, 18 oxygenated monoterpenes, 4-allylanisole, and ethanol. The hydrocarbon monoterpenes and 4-allylanisole decreased sharply over time, but oxygenated monoterpenes and ethanol increased up to weeks 4-6, after which they also decreased. Good correlations between certain billet volatiles and catches for some beetle species were obtained, but their biological significance could not be determined.