PRIMARY ATTRACTION OF MOUNTAIN PINE BEETLE, DENDROCTONUS PONDEROSAE HOPK. (COLEOPTERA: SCOLYTIDAE), TO BOLTS OF LODGEPOLE PINE

Abstract

Can. Ent. 123: 295-298 (1991)

Semiochemicals in the Natural History of Southern Pine Beetle Dendroctonus frontalis Zimmermann and Their Role in Pest Management

“…In some beetle species it is evident that host-produced (or "primary") host location/discrimination cues can be sensed by the pioneer beetles at a distance (Gara et al, 1984;Heikkenen, 1977;Miller et al, 1986;Moeck and Simmons, 1991). Some bark beetles, including major tree killers, have been shown to be attracted to olfactory cues associated with naturally or artificially compromised hosts (Gara et al, 1984;Macias-Samano et al, 1998;Moeck and Simmons, 1991;Pureswaran and Borden, 2005). Alternatively, beetles may select a host by means of close-range olfactory, gustatory, or other contact cues following random landing on the bark surface.…”

Effect of Water Stress and Fungal Inoculation on Monoterpene Emission from an Historical and a New Pine Host of the Mountain Pine Beetle

“…Beetles could visually orient towards and randomly land on potential host trees and then use gustatory cues to assess the suitability of the host (Raffa and Berryman, 1982). Alternatively, recognition and direct flight towards a host could be based on orientation to volatile organic compounds (VOC) emitted from the host (Moeck and Simmons, 1991) in combination with visual cues. MPB is able to detect and avoid non-hosts, which supports the hypothesis of direct flight as a host finding mechanism (Huber et al, 2000).…”

Maintenance of endemic Dendroctonus ponderosae populations through interactions with a secondary bark beetle, Pseudips mexicanus.

“…ponderosae orients to (Moeck and Simmons 1991) or random landings (Hynum and Berryman 1980) or a combination of both During epidemics, large healthy trees are attacked and killed by aggregating beetles . Initial selection of these hosts is conducted by pioneering beetles through primary attraction (orientation to host volatiles) (Person 1931).…”

“…for Dendroctonus ponderosae Hopkins (the mountain pine beetle). For this species it is generally accepted that pioneer females orient to host volatiles at long distances (Gara et al 1984), recognize silhouettes and volatiles at short distances (Moeck andSimmons 1991, Campbell andBorden 2006a, b), and land on host trees 2 at random coupled with gustatory sampling (Hynum and Berryman 1980, Pureswaran and Borden 2003 to select their host tree. Upon selecting a suitable host, aggregation pheromones are produced attracting both mates and others of the same sex.…”

“…They may overwinter in the adult stage and emerge early the following summer or overwinter as juveniles and emerge later in the summer . Upon emergence, bark beetles locate hosts through a combination of olfactory cues, visual recognition and gustatory sampling of host material (Hynum and Berryman 1980, Moeck and Simmons 1991.…”