Pollination Ecology of Three Rocky Mountain Dwarf Mistletoes

Authors: Penfield, Frederick B.; Stevens, Robert E.; Hawksworth, Frank G.

Source: Forest Science, Volume 22, Number 4, 1 December 1976 , pp. 473-484(12)

Publisher: Society of American Foresters

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Abstract:

Insect and wind pollination of Arceuthobium americanum, A. vaginatum subsp. cryptopodum, and A. cyanocarpum were studied. Dwarf mistletoes had 3 to 12 thousand pollen grains per flower; most pollen is shed in clusters of 60 to 100 grains. There was no relationship between the amount of pollen caught on microslides and distance from the closest staminate plant, at least within the first 12 m. Some pollen was dispersed up to nearly 150 m. More than 200 species of insects bearing dwarf mistletoe pollen were identified. About a half dozen species appear to be the principal pollinators of each dwarf mistletoe. An ant, Formica fusca, was the principal pollinator of Arceuthobium americanum. Copidosoma bakeri, an encyrtid wasp, was the principal pollinator of both A. vaginatum subsp. cryptopodum and A. cyanocarpum. Pollination was effected by both insects and wind. Forest Sci. 22:473-484.

Keywords: Arceuthobium

Document Type: Journal Article

Affiliations: Plant Pathologist, USDA, Forest Service, Rocky Mountain Forest and Range Experiment Station, Fort Collins, Colorado 80521, in cooperation with Colorado State University

Publication date: December 1, 1976

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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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