Insects Affecting Seed Production of Jack Pine, and Life Tables of Conelet and Cone Mortality in Wisconsin

Authors: Rauf, Aunu; Benjamin, Daniel M.; Cecich, Robert A.

Source: Forest Science, Volume 31, Number 2, 1 June 1985 , pp. 271-281(11)

Publisher: Society of American Foresters

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Eight insect species commonly affect seed production by jack pine (Pinus banksiana Lamb.) in northern Wisconsin. Choristoneura pinus pinus Freeman, and Platylygus luridus (Reuter) attack conelets. Eucosma monitorana Heinrich, Asynapta hopkinsi (Felt), Conophthorus resinosae Hopk., and Dioryctria disclusa Heinrich attack cones. Tetyra bipunctata (Herrich-Schaeffer), and Laspeyresia toreuta (Grote) destroy seeds. The general biology and seasonal insect attack in relation to jack pine phenology are described. Fourteen percent of the conelets produced in 1980 survived to become cones in 1981. Insects caused approximately 44 percent of conelet and cone mortality. Nine percent of seeds extracted from the 1980 cone crop were damaged by insects. The red squirrel (Tamiasciurus hudsonicus Bangs) harvested 10 percent of conelets during the winter of 1980-1981, and 30 percent of cones during the fall of 1981. Forest Sci. 31:271-281.

Keywords: Pinus banksiana

Document Type: Journal Article

Affiliations: USDA Forest Service, Forestry Sciences Laboratory, Rhinelander, WI 54501

Publication date: June 1, 1985

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  • 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.
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