Toland Ashley A, Wantuch Holly A, Mullins Donald E, Kuhar Thomas P, Salom Scott M
Virginia Tech, Blacksburg, VA 24061, USA.
Insects. 2019 Nov 26;10(12):426. doi: 10.3390/insects10120426.
The hemlock woolly adelgid, Annand, is an invasive insect that threatens hemlock species in eastern North America. Several species from the genus are predators of in its native areas of Asia and the western United States. Two species have been released as biological control agents: Fender, and Montgomery and Shiyake. LeConte is an adelgid predator native to the Eastern United States, where it can feed and complete development on opportunistically. Laboratory assays were conducted to assess the cold hardiness of these three species, including two distinct populations of , by measuring the supercooling points of each species from November 2016 through March 2017. This information may be useful for choosing the best-suited biological control agent for a particular region to control . There was a significant difference between the overall mean supercooling point of compared to the other spp. There were also significant differences of supercooling points between and both strains of in January, and significant differences between and all other strains in February. appear better adapted to cold extremes in the eastern U.S. than imported spp.
铁杉球蚜，安嫩德，是一种入侵性昆虫，威胁着北美东部的铁杉物种。该属的几个物种在其亚洲和美国西部的原生地区是铁杉球蚜的捕食者。两种食蚜蝇物种已作为生物防治剂被释放：芬德食蚜蝇，以及蒙哥马利食蚜蝇和志屋食蚜蝇。勒孔特食蚜蝇是原产于美国东部的铁杉球蚜捕食者，在那里它可以机会性地以铁杉球蚜为食并完成发育。通过测量2016年11月至2017年3月每个物种的过冷却点，进行了实验室测定以评估这三种食蚜蝇物种的抗寒性，包括两个不同种群的勒孔特食蚜蝇。这些信息可能有助于为特定地区选择最适合的生物防治剂来控制铁杉球蚜。与其他食蚜蝇物种相比，勒孔特食蚜蝇的总体平均过冷却点存在显著差异。1月份，勒孔特食蚜蝇与两种勒孔特食蚜蝇菌株之间的过冷却点也存在显著差异，2月份，勒孔特食蚜蝇与所有其他菌株之间也存在显著差异。与引进的食蚜蝇物种相比，勒孔特食蚜蝇似乎更能适应美国东部的极端寒冷。
