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Effect of Cone Feeding by Leptoglossus Occidentalis on Ponderosa Pine Seed Development

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The type of damage caused by the feeding of Leptoglossus occidentalis on ponderosa pine varies with the stage of development of the seed. When seeds are damaged before the seed coat hardens, the seeds collapse or develop only partly. Once the seed coat begins to harden, the seed coat will mature, but the female gametophyte becomes disorganized and shriveled. In laboratory studies, as much as 55 percent of the seeds were defective due to feeding by this insect.

Keywords: Hemiptera; Pinus ponderosa; seed insects

Document Type: Journal Article

Affiliations: Research Entomologist, Pacific Southwest Forest and Range Exp. Sta. Forest Serv., U. S. Dept Agr., Berkeley, California

Publication date: 1969-03-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2015 Impact Factor: 1.702
    Ranking: 16 of 66 in forestry

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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