Skip to main content
×
×
Home

Baited pheromone traps track changes in populations of western blackheaded budworm (Lepidoptera: Tortricidae)

  • V.G. Nealis (a1), P. Silk (a2), R. Turnquist and J. Wu (a2)
Abstract
Abstract

Pheromone lures for eastern and western blackheaded budworms, Acleris variana (Fernald) and A. gloverana (Walsingham), were synthesized and deployed in traps at locations with decreasing and increasing populations of western blackheaded budworms in British Columbia, Canada. Traps baited with these lures caught comparable numbers of moths at all sites tested in each year. The lures were sensitive to changes in density of budworm populations below observable damage levels, and numbers of moths in traps were strongly correlated with independent estimates of egg densities in the same year. The results confirm the qualitative similarity of the sex pheromones in eastern and western species of blackheaded budworm and demonstrate their utility as a tool for monitoring population trends, including increases in populations to damaging levels.

Résumé

Deux appâts à base de phéromone pour les tordeuses à tête noire de l'épinette de l'est et de l'ouest, Acleris variana (Fernald) et A. gloverana (Walsingham), ont été préparés et déployés en Colombie-Britannique au Canada, dans des pièges situés au sein de sites positifs où les populations de tordeuses sont soit en baisse, soit en augmentation. Le taux de capture des papillons nocturnes avec ces appâts à chaque site est comparable à ceux des sites testés auparavant. Les appâts ont démontré une sensibilité envers les changements en densité de population de tordeuses inférieure au seuil de détection visuelle de niveaux de dommage, ainsi qu'une forte corrélation entre le taux de capture des pièges et l'estimation indépendante de densité des œufs, à l'intérieur de la même année. Les résultats confirment la similarité qualitative des phéromones sexuelles des tordeuses à tête noire de l'épinette de l'est et de l'ouest, et démontrent leur utilisation comme outil de surveillance des tendances des populations, même jusqu'aux niveaux épidémiques.

Copyright
Corresponding author
1 Corresponding author (e-mail: Vince.Nealis@NRCan-RNCan.gc.ca).
References
Hide All
British Columbia Ministry of Forests and Range. 2010. 2009 Aerial overview survey summary table [online]. Available from http://www.for.gov.bc.ca/hfp/health/overview/2009table.htm [accessed 10 May 2010].
Condrashoff S.F. 1967. An extraction method for rapid counts of insect eggs and small organisms. The Canadian Entomologist, 99: 300303. doi:10.4039/Ent99300-3.
El-Sayed A.M. 2010. The pherobase: database of insect pheromones and semiochemicals [online]. Available from http://www.pherobase.com [accessed 10 May 2010].
Garbutt R. 1992. History of important forest pests in the Prince Rupert Forest Region 1914–1991. Report 92-10, Forest Insect and Disease Survey, Pacific Forestry Centre, Victoria, British Columbia.
Grant G.G., Millar J.G., and Trudel R. 2009. Pheromone identification of Dioryctria abietivorella (Lepidoptera: Pyralidae) from an eastern North American population: geographic variation in pheromone response. The Canadian Entomologist, 141: 129135. doi:10.4039/n09-008.
Gray T.G., Shepherd R.F., Gries G., and Gries R. 1996. Sex pheromone component of the western blackheaded budworm, Acleris gloverana Walsingham (Lepidoptera: Tortricidae). The Canadian Entomologist, 128: 11351142. doi:10.4039/Ent1281135-6.
Gries G., Li J., Gries R., Bowers W.W., West R.J., Wimalratne P.D.C., et al. 1994. (E)-11,13-Tetra-decadienal: major sex pheromone component of the eastern blackheaded budworm, Acleris variana (Fern.) (Lepidoptera: Tortricidae). Journal of Chemical Ecology, 20: 18. doi:10.1007/BF02065986.
Langor D.W., and Sperling F.A.H. 1995. Mitochondrial DNA variation and identification of bark weevils in the Pissodes strobi group in western Canada (Coleoptera: Curculionidae). Canadian Entomologist, 127: 895911. doi:10.4039/Ent127895-6.
Mask R.A. 1992. Western black-headed budworm and hemlock sawfly in Alaska—historical summary and bibliography. Technical Report R10-TP-21, United States Department of Agriculture, Forest Service, Alaska Region, Juneau, Alaska.
Nealis V.G., Turnquist R., and Garbutt R. 2004. Defoliation of juvenile western hemlock by western blackheaded budworm in Pacific coastal forests. Forest Ecology and Management, 198: 291301. doi:10.1016/j.foreco.2004.04.013.
Nesbitt B., Beevor P.S., Cole R.A., Lester R., and Poppi R.G. 1973. Synthesis of both geometric isomers of the major sex pheromone of the red bollworm moth. Tetrahedron Letters, 14: 46694670. doi:10.1016/S0040-4039(01)87305-6.
Powell J.A. 1962. Taxonomic studies on the Acleris gloverana–variana complex, the black-headed budworms (Lepidoptera: Tortricidae). The Canadian Entomologist, 94: 833840. doi:10.4039/Ent94833-8.
Roke G., and Shand A.S. 2006. Forest conditions, Mount Revelstoke and Glacier National Parks 2006. Forest Health Network, Pacific Forestry Centre, Victoria, British Columbia.
Roke G., and Unger L.S. 2005. Forest conditions, Mount Revelstoke and Glacier National Parks 2005. Forest Health Network, Pacific Forestry Centre, Victoria, British Columbia.
Shepherd R.F. 1994. Management strategies for forest insect defoliators in British Columbia. Forest Ecology and Management, 68: 303324. doi:10.1016/0378-1127(94)90053-1.
Shepherd R.F., and Gray T.G. 1990 a. Distribution of eggs of western blackheaded budworm, Acleris gloverana (Walsingham) (Lepidoptera: Tortricidae), and of foliage over the crowns of western hemlock, Tsuga heterophylla (Raf.) Sarg. The Canadian Entomologist, 122: 547554 doi:10.4039/Ent122547-5.
Shepherd R.F., and Gray T.G. 1990 b. A sampling system for eggs of western blackheaded budworm, Acleris gloverana (Walsingham) (Lepidoptera: Tortricidae), on western hemlock, Tsuga heterophylla (Raf.) Sarg. The Canadian Entomologist, 122: 555562. doi:10.4039/Ent122555-5.
Shepherd R.F., and Gray T.G. 2001. Comparative rates of density change in declining populations of the blackheaded budworm Acleris gloverana (Lepidoptera: Tortricidae) among different sites on Vancouver Islands. Environmental Entomology, 30: 883891. doi:10.1603/0046-225X-30.5.883.
Silk P.J., and Kuenen L.P.S. 1988. Sex pheromones and behavioral biology of the coniferophagous Choristoneura. Annual Revue of Entomology, 33: 83101. doi:10.1146/annurev.en.33.010188.000503.
Silk P.J., Kuenen L.P.S., Alford A.R., Lonergan G.C., and Grant G.G. 1997. Sex pheromone components of the oak leaf shredder, Croesia semipurpurana (Lepidoptera: Tortricidae). The Canadian Entomologist, 129: 10011008. doi:10.4039/Ent1291001-6.
Silk P.J., Tan S.H., Wiesner C.J., Ross R.J., and Lonergan G.C. 1980. Sex pheromone chemistry of the eastern spruce budworm. Environmental Entomology, 9: 640644.
Unger L. 1992. History of population fluctuations and infestations of important forest insects in the Nelson Forest Region 1921–1991. Report 92-13, Forest Insect and Disease Survey, Pacific Forestry Centre, Victoria, British Columbia.
Yamada S., Ohsawa H., Suzuki T., and Takayama H. 1983. Stereoselective synthesis of (E)-, (E,Z)-, and (E,E)-conjugated dienes via alkylation of 3-sulfolenes as key step. Chemistry Letters, 12: 10031006. doi:10.1246/cl.1983.1003.
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

The Canadian Entomologist
  • ISSN: 0008-347X
  • EISSN: 1918-3240
  • URL: /core/journals/canadian-entomologist
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 15 *
Loading metrics...

Abstract views

Total abstract views: 51 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 23rd February 2018. This data will be updated every 24 hours.