Two pine shoot beetles, Tomicus yunnanensis and Tomicus minor, are the most destructive pests of Pinus yunnanensis in southwestern China.
云南切梢小蠹和横坑切梢小蠹是我国西南地区同域危害云南松的两种重要害虫
树梢上的云南切梢小蠹 （拍摄：李猷）
We investigated behavioral responses within and between these two species during the shoot-feeding phase using walking bioassays. We also identified the pheromonal aspects of beetles by static solid phase microextraction (SPME) and hindgut extraction following interactive communication by gas chromatography-mass spectroscopy (GC-MS).
作者团队研究了两种切梢小蠹蛀梢期种内和种间行为关系及其化学信息素调控机制。对小蠹后肠使用固相微萃取和气相色谱-质谱分析。
切梢小蠹对松树枝梢的为害状（拍摄：武承旭）
We conclude that the (-)-trans-verbenol produced by these two pine shoot beetles is attractive at low concentrations and repellant at high concentrations, thereby fostering intraspecific competition. Verbenone is produced to prevent overcrowding via interspecific inhibition, and to expel beetles during shoot-feeding.
结果表明对两种切梢小蠹利用低浓度 (-)-trans-verbenol实现吸引和高浓度实现趋避，调控种内竞争。利用verbenone预防种群过度拥挤，实现种间竞争。
两种切梢小蠹室内互作的行为图（拍摄：武承旭）
全文已经发表在Journal of Chemical Ecology，文章第一作者是武承旭，通讯作者是张真、刘福（中国林科院）
文章第一作者在云南进行调查
全文链接：https://link.springer.com/article/10.1007%2Fs10886-019-01048-6
编辑：李猷
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Tomicus beetles in southwestern China – A new report