1. Lure efficacy for primary attraction of red turpentine beetle, Dendroctonus valens (Coleoptera: Curculionidae: Scolytinae) observed previously in US Pacific Northwest ponderosa pine forests is (−)-β-pinene+ethanol > (+)-3-carene+ethanol > (+)-α-pinene+ethanol.
2. Influence of (−)-β-pinene+ethanol release rates was tested with nine lures representing all combinations of three release levels for each compound in a 3 × 3 factorial design field test in Oregon. Beetle catch had a positive, linear relationship with the combined (−)-β-pinene+ethanol total release (or dose), resulting from higher release of either one or both compounds. Reversing component ratios, that is, 1 : 2 versus 2 : 1 with similar total doses, produced minimal changes in beetle response.
3. Females produce frontalin with dual aggregation and sex-pheromone functions. In another test, high-release frontalin, defined as >1.0 mg/day release, was tested at 1.4 to 1.5 mg/day in combination with each monoterpene+ethanol lure above and their trap catch compared with (−)-β-pinene+ethanol lures. Presence of high-release frontalin produced minimal changes in beetle responses.

中文翻译：

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无论组分比例如何，红松节油甲虫的主要吸引力随 (-)-β-蒎烯 + 乙醇剂量线性增加，并且随着添加高释放额叶素的反应没有变化

1. 先前在美国太平洋西北黄松林中观察到的红松节油甲虫Dendroctonus valens（鞘翅目：Curculionidae：Scolytinae）的主要引诱效果为(-)-β-蒎烯+乙醇 > (+)-3-蒎烯+乙醇 > ( +)-α-蒎烯+乙醇。
2. 在俄勒冈州进行的 3 × 3 因子设计现场测试中，用代表每种化合物三种释放水平的所有组合的九个诱饵测试了 (-)-β-蒎烯+乙醇释放率的影响。甲虫捕获量与 (-)-β-蒎烯+乙醇总释放量（或剂量）呈正线性关系，这是由于一种或两种化合物的释放量较高所致。逆转组分比率，即 1 : 2 与 2 : 1 的总剂量相似，甲虫反应的变化很小。
3. 雌性产生具有双重聚集和性信息素功能的额叶素。在另一项测试中，定义为 >1.0 毫克/天释放的高释放额叶林在 1.4 至 1.5 毫克/天与上述每种单萜+乙醇诱剂组合进行测试，并将其诱捕器与 (-)-β-蒎烯+ 进行比较乙醇诱饵。高释放额叶素的存在对甲虫的反应产生了最小的变化。