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Factors Influencing Pollen Flow in Bumblebee-Pollinated Delphinium virescens

Keith D. Waddington
Oikos
Vol. 37, No. 2 (Sep., 1981), pp. 153-159
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3544459
Stable URL: http://www.jstor.org/stable/3544459
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Factors Influencing Pollen Flow in Bumblebee-Pollinated Delphinium virescens
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Abstract

Pollen flow in a population of Delphinium virescens was examined by experimentally investigating the foraging behavior of the pollinators, Bombus americanorum. When bumblebees visited inflorescences with copious nectar they picked up more pollen and flew a shorter distance than when they visited infloresences with little nectar. Thus, short flights were more effective pollen dispersal flights and pollen flow was thereby reduced. These results and other factors are discussed as to their potential effects on gene flow within the plant population. /// Поток пыльцы в популяции Delphinium virescens определяли на основе экспериментальных исследований поведения опылителей Bombus americanorum во время фуражировки. Есди шмели посещали соцветия с большим количеством нектара, они забирали больше пыльцы и пролетали меньшее расстояние, чем при посещении цветов с меньшим запасом нектара; таким образом, короткие перелеты более эффективны для распространения пыльцы, и поток пыльцы таким образом, снижается. Обсуждаются эти результаты и другие факторы в отношении их потенциального влияния на поток генов внутри популяции растений.

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