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Resistance of Western White Pine to White-Pine Weevil

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Western white pine (Pinus monticola Douglas) is resistant to attack by the white pine weevil [Pissodes strobi (Peck)]. Adult weevils were caged on trees of eastern white pine (Pinus strobus L.) and western white pine (P. monticola); indices of attack were used to determine which stages of the life cycle of the weevil were affected by resistance mechanisms. Adult weevil mortality was negligible for both species; the numbers of feeding cavities on P. monticola were greater than on P. strobus. Numbers of adult emergence holes and leader mortality were similar for both species. The results suggest that resistance mechanisms of P. monticola either inhibit the weevils from traveling to the trees or induce them to leave.

Document Type: Journal Article

Affiliations: Research Assistant, School of Forest Resources, Pennsylvania State Univ., University Park, Pa. 16802

Publication date: December 1, 1970

More about this publication?
  • The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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