Invasive Insect Biocontrol and Behavior Laboratory, USDA Agricultural Research Service, Beltsville, MD, USA.
Dept. of Entomology and Nematology, University of California Davis, Davis, CA, USA.
J Chem Ecol. 2023 Oct;49(9-10):475-481. doi: 10.1007/s10886-023-01437-y. Epub 2023 May 29.
We found that vittatalactone, specifically (3R,4R)-3-methyl-4-[(1S,3S,5S)-1,3,5,7-tetramethyloctyl]oxetan-2-one, is the male-produced aggregation pheromone of the western striped cucumber beetle, Acalymma trivittatum (Mannerheim), as was previously shown for the striped cucumber beetle, Acalymma vittatum (F.) (Coleoptera: Chrysomelidae). A synthetic mixture containing 9% of the authentic natural pheromone, is attractive to both sexes of both species in the field, as demonstrated by trapping using baited and unbaited sticky panels in California and earlier in Maryland. Females of both species do not produce detectable vittatalactone. This finding expands the usefulness of the synthetic vittatalactone mixture for pest management throughout the range of both A. vittatum and A. trivittatum. Development of vittatalactone time-release formulations combined with cucurbitacin feeding stimulants offer the potential for selective and environmentally-friendly cucurbit pest management tactics.
我们发现， vittatalactone（特别是（3R，4R）-3-甲基-4-[(1S，3S，5S)-1，3，5，7-四甲基辛基]恶唑烷-2-酮）是西部条纹黄瓜甲虫 Acalymma trivittatum（Mannerheim）的雄性产生的聚集信息素，正如之前对条纹黄瓜甲虫 Acalymma vittatum（F.）（鞘翅目：金花虫科）的研究所示。含有 9%天然信息素的合成混合物在加利福尼亚州和早些时候在马里兰州使用诱饵和非诱饵粘性板进行诱捕时，对两种物种的雌雄两性都具有吸引力。两种物种的雌性都不会产生可检测到的 vittatalactone。这一发现扩大了合成 vittatalactone 混合物在 A. vittatum 和 A. trivittatum 整个分布范围内进行害虫管理的用途。开发 vittatalactone 缓释制剂与葫芦素饲养刺激物相结合，为选择性和环保的葫芦科害虫管理策略提供了潜力。
