Biological control of Adelges tsugae (HWA) with Sasajiscymnus tsugae (Ladybird Beetle).The primary threat to the health and sustainability of the eastern hemlock eastern hemlock cicutamaculata. forest is the Hemlock Woolly Adelgid Hemlock woolly adelgid (Adelges tsugae), commonly abbreviated as HWA is a true bug native to East Asia that feeds by sucking sap from hemlock trees (Tsuga sp.). (HWA HWA Horror Writers Association HWA Here We Are HWA Heartland Wrestling Association HWA Hemlock Wooly Adelgid HWA Hot Wire Anemometry HWA Hazardous Waste Act HWA Hunter Water Australia (Broadmeadow, NSW, Australia) ). A biological control agent, Sasajiscymnus tsugae, has been mass reared to help control HWA. Two release sites of S. tsugae were monitored south of Highlands, North Carolina | Highlands is an incorporated town located on a plateau in the southern Appalachian mountains, within the Nantahala National Forest, in Macon County, North Carolina (a small annexed portion also being in neighboring Jackson County). to determine if S. tsugae could survive, reproduce, and spread into the southern Appalachian range. Environmental samples and measurements were taken to evaluate and analyze the release site area. It was observed that the beetles both survived and showed expansion to surrounding hemlocks. Potential evidence of reproduction was also discovered in the form of mating pairs. |
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