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Fine-tuning the composition of the cranberry weevil (Coleoptera: Curculionidae) aggregation pheromone
Journal of Applied Entomology ( IF 1.9 ) Pub Date : 2020-04-02 , DOI: 10.1111/jen.12752
Cesar Rodriguez‐Saona 1 , Hans T. Alborn 2 , Cam Oehlschlager 3 , Carolina Calvo 3 , Vera Kyryczenko‐Roth 1 , Sunil Tewari 4 , Martha M. Sylvia 5 , Anne L. Averill 6
Affiliation  

The cranberry weevil Anthonomus musculus Say is a key pest of highbush blueberries (Vaccinium corymbosum L.) and cranberries (Vaccinium macrocarpon Aiton) in the northeastern United States. Previous studies have reported A. musculus adult attraction to traps baited with the aggregation pheromone of the pepper weevil Anthonomus eugenii Cano, likely because these two weevils share similar pheromone blends that differ only in two components. The A. musculus aggregation pheromone contains (Z)‐2‐(3,3‐dimethylcyclohexylidene) ethanol (Z grandlure II), (Z)‐(3,3‐dimethylcyclohexylidene) acetaldehyde (grandlure III), (E)‐(3,3‐dimethylcyclohexylidene) acetaldehyde (grandlure IV) and (E)‐3,7‐dimethyl‐2,6‐octadien‐1‐ol (geraniol); whereas A. eugenii produces a pheromone blend that includes (E)‐2‐(3,3‐dimethylcyclohexylidene) ethanol (E grandlure II) and (E)‐3,7‐dimethyl‐2,6‐octadienoic acid (geranic acid) in addition to the four A. musculus pheromone components. Here, we hypothesized that differences in pheromone composition between these two species influence A. musculus adult attraction to its aggregation pheromone. To test this, we studied the response of A. musculus to its pheromone blend with and without E grandlure II and geranic acid, a commercial A. eugenii pheromone lure and a no‐lure control in highbush blueberry and cranberry fields in New Jersey and Massachusetts, respectively. Regardless of crop type, A. musculus adults were more attracted to their four‐component pheromone blend and the blend plus geranic acid than the commercial A. eugenii pheromone and the no‐lure controls. The A. musculus pheromone blend plus E grandlure II and the A. eugenii pheromone blend also captured more A. musculus adults than the no‐lure control but not compared to the commercial A. eugenii pheromone. Further analysis showed that A. musculus adults are significantly (~27%) less attracted to their pheromone blend if it contains E grandlure II, although the addition of geranic acid did not affect their response. These findings may help guide future efforts towards the development of behaviour‐based tools to monitor and manage A. musculus.

中文翻译:

微调蔓越莓象鼻虫(鞘翅目:仙茅科)聚集信息素的组成

蔓越莓象鼻虫 Anthonomus musculus Say 是美国东北部高丛蓝莓 (Vaccinium corymbosum L.) 和蔓越莓 (Vaccinium macrocarpon Aiton) 的主要害虫。以前的研究报告了 A. musculus 成虫对以辣椒象鼻虫 Anthonomus eugenii Cano 的聚集信息素为诱饵的诱捕器的吸引力,可能是因为这两种象鼻虫共享相似的信息素混合物,仅在两种成分上有所不同。A. musculus 聚集信息素包含 (Z)-2-(3,3-二甲基环己基) 乙醇 (Z Grandlure II), (Z)-(3,3-二甲基环己基) 乙醛 (grandlure III), (E)-(3 ,3-二甲基亚环己基)乙醛(grandlure IV)和(E)-3,7-二甲基-2,6-辛二烯-1-醇(香叶醇);而 A. eugenii 产生的信息素混合物包括 (E)-2-(3,3-二甲基亚环己基) 乙醇 (E grandlure II) 和 (E)-3,7-二甲基-2,6-辛二烯酸(香叶酸)以及四种 A. musculus 信息素成分。在这里,我们假设这两个物种之间信息素组成的差异会影响 A. musculus 成人对其聚集信息素的吸引力。为了测试这一点,我们在新泽西州和马萨诸塞州的高丛蓝莓和蔓越莓田中研究了 A. musculus 对其信息素混合物的反应,有和没有 E Grandlure II 和香叶酸,商业 A. eugenii 信息素诱剂和无诱剂对照, 分别。无论作物类型如何,与商用 A. eugenii 信息素和无诱饵对照相比,A. musculus 成虫更受其四组分信息素混合物和混合物加香叶酸的吸引。A. musculus 信息素混合物加上 E Grandlure II 和 A. eugenii 信息素混合物也捕获了更多的 A. 与无诱饵对照相比,成年肌肉动物的效果更好,但与商业 A. eugenii 信息素相比则不然。进一步的分析表明,A. musculus 成虫对它们的信息素混合物的吸引力显着 (~27%) 如果它包含 E Grandlure II,尽管添加香叶酸不会影响它们的反应。这些发现可能有助于指导未来开发基于行为的工具来监测和管理 A. musculus。
更新日期:2020-04-02
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