Department of Entomology, Texas A&M University, College Station, TX 77843-2475, USA.
J Econ Entomol. 2010 Aug;103(4):1312-4. doi: 10.1603/ec10134.
Larvae found infesting fruit from a Carpathian walnut, Juglans regia L., tree in Missouri were confirmed by DNA analysis to be those of pecan weevil, Curculio caryae (Horn) (Coleoptera: Curculionidae). The infested walnut tree occurs in the midst of pecan weevil-infested pecans, Carya illinoinensis (Wang.) K. Koch; the larval haplotypes were found to be identical to pecan weevil larvae from the region, indicating that the walnut infestation arose by association with infested pecan. This is the first confirmed DNA analysis showing pecan weevil attacks J. regia and the second report that J. regia may be at risk of infestation by pecan weevil. Further study indicates this infestation on walnut is established and ongoing. The pecan weevil is a key pest of pecan and seems capable of inflicting similar damage to walnut if spread to commercial areas that produce J. regia.
在密苏里州，从一棵欧洲榛树（Juglans regia L.）上的果实中发现的幼虫，经 DNA 分析确认为美洲山核桃象甲（Curculio caryae （Horn））（鞘翅目：象甲科）的幼虫。受感染的欧洲榛树生长在美洲山核桃象甲感染的美洲山核桃（Carya illinoinensis （Wang.） K. Koch）中间；幼虫的单倍型与该地区的美洲山核桃象甲幼虫相同，表明核桃的感染是与受感染的美洲山核桃有关。这是首次经 DNA 分析证实美洲山核桃象甲攻击欧洲榛树，也是第二个表明欧洲榛树可能受到美洲山核桃象甲侵害的报告。进一步的研究表明，这种对核桃的感染已经建立并在持续。美洲山核桃象甲是美洲山核桃的主要害虫，如果传播到生产欧洲榛树的商业区域，似乎有能力对核桃造成类似的破坏。
