Field responses of the western pine beetle1 and one of its predators to host- and beetle-produced compounds

Bedard, William D.; Wood, David L.; Tilden, Paul E.; Lindahl, Kenneth Q.; Silverstein, Robert M.; Rodin, J. O.

doi:10.1007/bf00987674

Cited by 61 publications

(32 citation statements)

References 23 publications

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“…Intertrap spacing of less than 30 m is typical for studies evaluating bark beetle semiochemicals (Payne et al 1978b;Bedard et al 1980;Bakke 1981;Borden et al 1987;Miller and Borden 1992;Sullivan 2005) and was 25 and 15-20 m in the only two trapping studies that both observed endo-brevicomin inhibition for D. frontalis and reported these experimental parameters (Payne et al 1978a;Salom et al 1992). Catch in the control traps of these tests was possibly enhanced by the nearby endo-brevicomin baits (i.e., attached to experimental traps) leading to the conclusion that the endo-brevicomin was reducing catch in the experimental trap to which it was attached.…”

Section: Discussionmentioning

confidence: 99%

“…If catch in the challenged trap is significantly lower than the control, the test bait is concluded to be inhibitory; if catch is significantly higher than the control, the test bait is concluded to be a synergist or attraction enhancer (Payne et al 1978a;Bedard et al 1980;Bakke 1981;Pureswaran and Borden 2004;Sullivan 2005). Our data demonstrate how such attractant-challenge tests might generate misleading or inconsistent conclusions regarding the activity of a compound.…”

Section: Discussionmentioning

confidence: 99%

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Spatial Displacement of Release Point can Enhance Activity of an Attractant Pheromone Synergist of a Bark Beetle

Sullivan

Mori

2009

J Chem Ecol

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Flight responses of the southern pine beetle, Dendroctonus frontalis Zimmermann, to widely-spaced (>130 m) traps baited with pine volatiles (in turpentine) and the female-produced pheromone component frontalin were enhanced when a bait containing the male pheromone component (+)-endo-brevicomin was attached directly to the trap. However, displacing this bait 4-16 m horizontally from the trap significantly increased its synergistic effect. (+)-endo-Brevicomin enhanced catch to the same degree when the bait was positioned either on the trap or 32 m away. In another experiment, pairs of frontalin/turpentinebaited traps were established with 4 m spacing between traps and >100 m spacing between pairs. Attachment of either a racemic or (+)-endo-brevicomin bait to one trap of a pair caused a significant increase in catch by both traps, but catch in the trap lacking endo-brevicomin was increased more than in its endo-brevicomin-baited twin. In a third experiment, widely-spaced groups of three traps (in a line with 1 and 4 m spacing between the middle and outer traps) were baited uniformly with frontalin and turpentine, and the release rate of (+)-endo-brevicomin from the middle trap was varied across three orders of magnitude. Release rates sufficient to enhance total D. frontalis catch by the trio also caused relatively higher catches to occur in the outer traps than in the middle one. These experiments indicated that both male and female D. frontalis fly to and land preferentially at sources of frontalin and host odors when these are located some distance away from a source of endo-brevicomin. This behavior may have evolved in D. frontalis to allow host-seeking beetles to locate growing, multi-tree infestations while avoiding fully-colonized trees within these infestations. Our data demonstrate that trap spacing alone can qualitatively change the outcome of bait evaluation trials and may explain why many earlier experiments with endo-brevicomin failed to identify it as an aggregation pheromone synergist for D. frontalis. We believe that important aggregative functions of semiochemicals of other bark beetle species may have been similarly overlooked due to choice of experimental procedures.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Spatial Displacement of Release Point can Enhance Activity of an Attractant Pheromone Synergist of a Bark Beetle

Sullivan

Mori

2009

J Chem Ecol

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“…The ternary blend is the most attractive lure yet identified for this species [at least when released in the absence of natural or artificial competing sources of attractant (Moreno et al, 2008;Sullivan and Mori, 2009;Sullivan et al, 2007bSullivan et al, , 2011Vit e et al, 1985)], and the species possesses exceptional olfactory sensitivity to the two insect-produced components (Payne, 1975;Sullivan, 2005;Sullivan et al, 2007b). The pheromone component combination parallels that of closely related, aggressive species, D. brevicomis LeConte and D. adjunctus Blandford in which each sex contributes a single, different bicyclic ketal to the aggregation pheromone (ie, brevicomin or frontalin) that-at least in the case of D. brevicomis-acts synergistically (Bedard et al, 1980b;Browne et al, 1979;Byers et al, 1984;Hughes et al, 1976). This is not true for aggressive pine beetles D. ponderosae Hopkins in which females produce no bicyclic ketals , and the close sibling of D. frontalis, D. mesoamericanus Armendáriz-Toledano and Sullivan, in which females produce both brevicomin and frontalin (Armendáriz-Toledano et al, 2015;Sullivan et al, 2012).…”

Section: The Aggregation Attractantmentioning

confidence: 99%

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

Sullivan

2016

Advances in Insect Physiology

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“…Finally, few studies have explored the full range of subcortical forest insects by using traps baited with semiochemicals. Most semiochemical studies have focused on either single subcortical species (e.g., Bedard et al 1980;Borden et al 1996); their associated predators (e.g., Seybold et al 1992;; or on a small subset of subcortical insect families (e.g., Phillips et al 1988;Chénier and Philogène 1989;Miller and Rabaglia 2009).…”

Section: Introductionmentioning

confidence: 99%

Application of Semiochemicals to Assess the Biodiversity of Subcortical Insects following an Ecosystem Disturbance in a Sub-boreal Forest

et al. 2009

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From 2000 through 2003 we used semiochemicalbaited traps in northeastern Minnesota, USA, to assess changes in assemblages of subcortical forest insects after a catastrophic wind storm in 1999 and subsequent (1999)(2000) fuel-reduction activities (salvage-logging and prescribed-burning). We determined the regional efficacy of fifteen semiochemical blends (pheromones and kairomones) as attractants for target and non-target subcortical insect species (Coleoptera: Anthribidae, Buprestidae, Cerambycidae, Cleridae, Cucujidae, Curculionidae, Histeridae, Nemonychidae, Salpingidae, Scolytidae, Tenebrionidae, and Hymenoptera: Siricidae we trapped 86,471 subcortical insects (143 species) in baited and unbaited Lindgren funnel traps, and 500 beetles (44 species) in baited and unbaited pitfall traps. We report 23 new state collection records of subcortical insects from Minnesota. Trap catches of subcortical insects were greatest in the wind-disturbed areas 2 years after the event, and declined thereafter. Similar trends were observed for subcortical insects in the burned areas. Both wind-disturbance and burning increased the subcortical insect species richness and diversity on the landscape. The subcortical insect species compositions of the salvaged and burned forest areas differed from those of the undisturbed and wind-disturbed areas. Trap catches of subcortical insects in response to semiochemical treatments also varied with year of sampling and land-area treatment. The greatest diversity of subcortical beetle species was in traps baited with attractants for the scolytids, Dendroctonus valens [(+)-α-pinene and (−)-β-pinene] and Dryocoetes spp. [exo-brevicomin and (−)-α-pinene], perhaps reflecting the generic nature of the baits. The most distinct species compositions were collected in response to the woodborer and Dendroctonus simplex baits, whereas the species compositions in traps with the D. valens and Dryocoetes spp. baits, and the unbaited funnel trap were the most similar. The variation in trap catch with time and across landscapes suggests that the responses of subcortical insects to semiochemicals are more complex than previously appreciated.

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Field responses of the western pine beetle1 and one of its predators to host- and beetle-produced compounds

Cited by 61 publications

References 23 publications

Spatial Displacement of Release Point can Enhance Activity of an Attractant Pheromone Synergist of a Bark Beetle

Spatial Displacement of Release Point can Enhance Activity of an Attractant Pheromone Synergist of a Bark Beetle

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

Application of Semiochemicals to Assess the Biodiversity of Subcortical Insects following an Ecosystem Disturbance in a Sub-boreal Forest

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