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EXPLOITING ADULT GIRTH TO SEPARATE PISSODES STROBI (PECK) (COLEOPTERA: CURCULIONIDAE) FROM ASSOCIATED INSECTS IN LEADERS OF PICEA SITCHENSIS (BONG.) CARR.

Published online by Cambridge University Press:  31 May 2012

Michael A. Hulme
Affiliation:
Canadian Forestry Service, Pacific Forestry Centre, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
John W.E. Harris
Affiliation:
Canadian Forestry Service, Pacific Forestry Centre, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5
Allan F. Dawson
Affiliation:
Canadian Forestry Service, Pacific Forestry Centre, 506 West Burnside Road, Victoria, British Columbia, Canada V8Z 1M5

Extract

Methods of separating Pissodes strobi (Peck) from its insect associates in leaders of Picea sitchensis (Bong.) Carr. would enable the associates to be returned to the field when infested leaders are routinely clipped to remove P. strobi. We recently demonstrated a method based on the relative lack of cold-hardiness of P. strobi (Hulme et al. 1986). Another method suggested many years ago (e.g. Taylor 1929) is to exploit the different ability of adult insects to crawl through a screen. To our knowledge the efficacy of such a separation has never been demonstrated. We report here an investigation into the ability of these adult insects to crawl through screens having openings of various sizes, with the objective of establishing how completely these insect associates could be separated from P. strobi

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1987

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References

Hulme, M.A., Dawson, A.F., and Harris, J.W.E.. 1986. Exploiting cold-hardiness to separate Pissodes strobi (Peck) (Coleoptera: Curculionidae) from associated insects in leaders of Picea sitchensis (Bong.) Carr. Can. Ent. 118: 11151122.CrossRefGoogle Scholar
Taylor, R.L. 1929. The biology of the white pine weevil Pissodes strobi (Peck) and a study of its insect parasites from an economic view point. Ent. Am. 9: 166–246; idem 10: 186.Google Scholar