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SECONDARY ATTRACTION IN THE WESTERN BALSAM BARK BEETLE, DRYOCOETES CONFUSUS (COLEOPTERA: SCOLYTIDAE)

Published online by Cambridge University Press:  31 May 2012

A. J. Stock  and
J. H. Borden
A. J. Stock
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
J. H. Borden
Affiliation:
Centre for Pest Management, Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia V5A 1S6
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Abstract

Evidence for secondary attraction in the western balsam bark beetle, Dryocoetes confusus Swaine, was obtained in laboratory bioassays and field experiments. Both sexes showed positive responses to volatiles of the host tree, Abies lasiocarpa (Hook.) Nutt., indicating that primary attraction is probably important in host selection by this species. Male beetles initiated attack and within 6 h produced an aggregation pheromone(s), which was present in frass and in pentane extracts of the abdomens of males excised from logs. Both sexes responded to the pheromone. Abdominal extract of unmated males which had bored into host bark for 14 days was still attractive. Pheromone production was induced by exposing males to host resin volatiles. Mating had no effect on male attractiveness, but induced females to produce an antiaggregation pheromone which, in laboratory bioassays, at least partially inhibited response to male attractant. The attractive volatiles from male-infested logs were successfully captured on Porapak Q®. The development of laboratory bioassay and pheromone extraction techniques indicates that a pheromone isolation program is feasible.

Résumé

Des preuves de l'existence d'attraction secondaire chez le scolyte du sapin de l'ouest, Dryocoetes confusus Swaine, ont été obtenues à partir de biotests en laboratoire et d'expériences sur le terrain. Une réaction positive aux composés volatiles émanant de l'arbre hôte, Abies lasiocarpa (Hook.) Nutt., a été observée chez les deux sexes, indiquant que l'attraction primaire joue probablement un rôle important dans la sélection de l'hôte chez cette espèce. Les mâles ont initié l'attaque, et en moins de 6 h, ont produit une(des) phéromones(s) d'aggrégation détectée(s) dans les fèces et dans des extraits au pentane d'abdomens de mâles retirés des bûches. Une réaction à la phéromone a été observée chez les deux sexes. Un extrait d'abdomens de mâles non-accouplés ayant foré dans l'écorce pendant 17 jours, étaint encore attractif. La production de phéromone a pu être provoquée en exposant des mâles aux substances volatiles de la résine de l'hôte. L'accouplement s'est avéré sans effet sur l'attractivité des mâles, mais a induit la production d'une phéromone "anti-aggrégation" chez les femelles, laquelle a inhibé du moins partiellement leur réaction à l'attractant du mâle lors de biotests en laboratoire. Les attractants volatiles provenant de bûches infestées de mâles ont pu être fixés sur du matériel de remplissage pour chromatographie en phase gazeuse (Porapak Q®). Le développement d'un biotest de laboratoire et de techniques d'extraction de la phéromone indiquent qu'un projet d'isolation de la phéromone serait réalisable.

Type
Articles
Information
The Canadian Entomologist , Volume 115 , Issue 5 , May 1983 , pp. 539 - 550
Copyright
Copyright © Entomological Society of Canada 1983

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References

Borden, J. H. 1967. Factors influencing the response of Ips confusus (Coleoptera: Scolytidae) to male attractant. Can. Ent. 99: 1164–1193.Google Scholar
Borden, J. H. 1982 a. Secondary attraction in the Scolytidae: an annotated bibliography. Simon Fraser Univ. Pest Mgt Pap. 26.Google Scholar
Borden, J. H. 1982 b. Aggregation pheromones. pp. 74–139in Mitton, J. B. and Sturgeon, K. B. (Eds.), Bark Beetles in North American Conifers. Ecology and Evolution. Univ. Texas Press, Austin.Google Scholar
Borden, J. H. and Stokkink, E.. 1973. Laboratory investigation of secondary attraction in Gnathotrichus sulcatus (Coleoptera: Scolytidae). Can. J. Zool. 51: 469–473.Google Scholar
Bright, D. E. Jr., 1976. The insects and arachnids of Canada and Alaska. 2. Coleoptera: Scolytidae. Can. Dep. Agric. Publ. 1576.Google Scholar
Byrne, K. J., Gore, W. E., Pearce, G. T., and Silverstein, R. M.. 1975. Porapak Q collection of airborne organic compounds serving as models for insect pheromones. J. chem. Ecol. 1: 1–7.Google Scholar
Cottrell, C. B. and Fiddick, R. L.. 1962. An appraisal of timber killed by insects 1956–1960 inclusive in British Columbia. Can. Dep. For., Ent. and Path. Lab., Victoria, B.C. Inf. Rep. (Nov., 1962).Google Scholar
Cottrell, C. B. and Fiddick, R. L.. 1968. Appraisal of timber killed by some important insects in British Columbia from 1961–1965 inclusive. For., Br. Dep. Fish. and For., For. Res. Lab., Victoria, B.C.Google Scholar
Elliot, E. W., Lanier, G. N., and Simeone, J. B.. 1975. Synthesis of multistriatin enantiomers and their action on Scolytus multistriatus (Coleoptera: Scolytidae). J. chem. Ecol. 5: 279–287.Google Scholar
Hendry, L. B., Piatek, B., Browne, L. E., Wood, D. L.., Byers, J. Y., Fish, R. H., and Hicks, R. A.. 1980. In vivo conversion of a labelled host plant chemical to pheromones of the bark beetle Ips paraconfusus. Nature, Lond. 284: 485.Google Scholar
Hughes, P. R. 1973 a. Effect of α-pinene exposure on trans-verbenol synthesis in Dendroctonus ponderosae Hopk. Naturwissenschaften 60: 261–262.Google Scholar
Hughes, P. R. 1973 b. Dendroctonus: production of pheromones and related compounds in response to host monoterpenes. Z. angew. Ent. 73: 294–312.CrossRefGoogle Scholar
Lanier, G. N. and Burns, B. W.. 1978. Barometric flux effects on the responsiveness of bark beetles to aggregation attractants. J. chem. Ecol. 2: 139–147.Google Scholar
Mason, R. R. 1970. Comparison of flight aggregation in two species of southern Ips (Coleoptera: Scolytidae). Can. Ent. 102: 1036–1041.Google Scholar
Mathers, W. G. 1931. The biology of Canadian bark beetles. The seasonal history of Dryocoetes confusus Sw. Can. Ent. 68: 247–248.Google Scholar
Moeck, H. A., Wood, D. L., and Lindahl, K. Q. Jr., 1981. Host selection behaviour of bark beetles (Coleoptera: Scolytidae) attacking Pinus ponderosa, with special emphasis on the western pine beetle, Dendroctonus brevicomis. J. chem. Ecol. 7: 49–83.CrossRefGoogle Scholar
Molnar, A. C. 1965. Pathogenic fungi associated with a bark beetle on alpine fir. Can. J. Bot. 43: 463–570.Google Scholar
Nilssen, A. C. 1979. Taxonomic status of Dryocoetes autographus Ratz. and D. hectographus (Coleoptera: Scolytidae). Ent. scand. 10: 219–228.Google Scholar
Peacock, J. W., Cuthbert, R. A., Gore, N. E., Lanier, G. N., Pearce, G. T., and Silverstein, R. M.. 1975. Collection on porapak Q of the aggregation pheromone of Scolytus multistriatus (Coleoptera: Scolytidae). J. chem. Ecol. 1: 149–160.Google Scholar
Prokopy, R. J. 1981. Epideictic pheromones influencing spacing patterns of phytophagous insects. pp. 181–213in Nordland, D. A., Jones, R. L., and Lewis, W. J. (Eds.), Semiochemcials: Their Role in Pest Control. Wiley, New York.Google Scholar
Rudinsky, J. A. 1969. Masking of the aggregation pheromone in Dendroctonus pseudotsugae Hopk. Science 166: 884–885.CrossRefGoogle ScholarPubMed
Wood, D. L., Browne, L. E., Silverstein, R. M., and Rodin, J. O.. 1966. Sex pheromones of bark beetles 1. Mass production, bioassay, source, and isolation of the sex pheromone of Ips confusus (LeC.). J. Insect Physiol. 12: 523–536.Google Scholar
Wood, D. L. and Bushing, R. W.. 1963. The olfactory response of Ips confusus (LeConte) (Coleoptera: Scolytidae) to the secondary attraction in the laboratory. Can. Ent. 95: 1066–1078.Google Scholar