USDA, Agricultural Research Service, San Joaquin Valley Agricultural Sciences Center, Parlier, CA.
Trécé Inc., Adair, OK.
J Econ Entomol. 2020 Jun 6;113(3):1270-1278. doi: 10.1093/jee/toz363.
The use of aerosol mating disruption for management of the navel orangeworm Amyelois transitella (Walker) in California tree nuts has increased markedly. This treatment suppresses pheromone monitoring traps in neighboring orchards as well as in the orchard under treatment. The current study, therefore, addresses the interrelated topics of which attractant is most effective, how the number of adults captured is affected by trap design, and what sex is captured. Under most circumstances, wing traps baited with phenyl propionate (PPO) captured more adults than those baited with a 5-compound kairomone blend. Adding a pheromone lure along with the dispenser for the experimental attractant increased the number of adults captured with PPO both in and near-mating disruption. In contrast, addition of a pheromone lure along with the kairomone blend only increased the number of adults captured in orchards near but not under mating disruption. Delta traps, which are preferred by the industry, captured fewer adults than wing traps. Improvements in the number of adults captured with PPO in delta traps from addition of a pheromone lure and from design modifications were additive. Both sexes were captured by all attractants and trap designs tested, and the sex ratio was highly variable. Open traps like the wing trap captured a slightly higher proportion of males than closed traps. These findings are discussed in the context of management of the navel orangeworm.
在加利福尼亚的核果作物中，利用气溶胶交配干扰来管理桔小实蝇 Amyelois transitella (Walker) 的使用显著增加。这种处理方法会抑制相邻果园和处理果园中的信息素监测诱捕器。因此，目前的研究涉及到相关主题，即哪种引诱剂最有效，诱捕器设计如何影响捕获的成虫数量，以及捕获的是哪种性别。在大多数情况下，用苯丙酸酯（PPO）诱饵的翅膀诱捕器捕获的成虫比用 5 种化合物信息素混合物诱饵的诱捕器多。在实验引诱剂的分配器中添加信息素诱饵会增加 PPO 诱捕器在交配干扰内外捕获的成虫数量。相比之下，在信息素混合物中添加信息素诱饵只会增加靠近但不在交配干扰下的果园中捕获的成虫数量。行业更喜欢的三角诱捕器捕获的成虫数量比翅膀诱捕器少。通过添加信息素诱饵和设计改进，三角诱捕器中 PPO 诱捕器捕获的成虫数量有所增加，这种增加是累加的。所有测试的引诱剂和诱捕器设计都能捕获到雌雄成虫，且性别比例高度可变。与封闭诱捕器相比，像翅膀诱捕器这样的开放式诱捕器捕获的雄性比例略高。这些发现是在桔小实蝇管理的背景下讨论的。
