Investigation of Host Selection by Mountain Pine Beetle (Dendroctonus ponderosae) Hopk. in Lodgepole Pine (Pinus contorta) Dougl.
Lodgepole pines Pinus contorta (Douglas) were treated by girdling to assess the response by an endemic population of mountain pine beetle Dendroctonus ponderosas (Hopkins), (Coleoptera: Scolytidae). Capture in 'sticky traps' indicated that the beetles were attracted while in flight towards the wounded trees. A significant difference in the landing rates of bark beetles between the treated and untreated trees indicated that the beetles were able to distinguish wounded from non-wounded trees while still in flight. Pressure chamber readings demonstrated that water stress developed in the girdled trees when compared to the non-girdled trees.
Eager, Thomas J. (1986). Investigation of host selection by mountain pine beetle (Dendroctonus ponderosae) Hopk. in lodgepole pine (Pinus contorta) Dougl. MS.