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    Movers and shakers: Bumble bee foraging behavior shapes the dispersal of microbes among and within flowers

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    Russell_et_al-2019-Ecosphere.pdf
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    Author
    Russell, Avery L. cc
    Rebolleda‐Gómez, María
    Shaible, Tierney Marie
    Ashman, Tia‐Lynn
    Affiliation
    Univ Arizona, Entomol & Insect Sci Grad Interdisciplinary Progr
    Issue Date
    2019-05-17
    Keywords
    behavior
    dispersal
    floral organs
    flower microbes
    foraging
    microbial communities
    microbial transmission
    movement ecology
    pollination
    vectors
    
    Metadata
    Show full item record
    Publisher
    Wiley
    Citation
    Russell, A. L., Rebolleda‐Gómez, M., Shaible, T. M., & Ashman, T. L. (2019). Movers and shakers: Bumble bee foraging behavior shapes the dispersal of microbes among and within flowers. Ecosphere, 10(5), e02714.
    Journal
    ECOSPHERE
    Rights
    Copyright © 2019 The Authors. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Dispersal is central to the ecology and evolution of spatially structured communities. While flower microbial communities are spatially structured among floral organs, how dispersal vectors distribute microbes among floral organs is unknown. Pollinators are recognized as key microbial vectors, but effects of their different foraging behaviors on transfer dynamics among flowers or different floral organs are not known. We asked how foraging behaviors of a model pollinator (Bombus impatiens) affect acquisition and dispersal of microbes among flower organs. We used monkeyflowers (Mimulus guttatus) to examine dispersal within a natural context and artificial flowers to test how common bee foraging behaviors (nectaring, buzzing, or scrabbling) shaped dispersal of a green fluorescent protein‐labeled bacteria, Pseudomonas fluorescens. Bees acquired 1% of a flower's microbes and dispersed 31% of acquired microbes to the next flower. All bees acquired microbes, and 85% and 76% of bees dispersed microbes to live and artificial flowers, respectively. Microbes acquired from the corolla were mainly deposited on the corolla, followed by the stamens, and least on the nectary/pistil. Bee foraging behavior affected acquisition, with scrabbling for pollen resulting in 23% more microbes acquired than nectaring, and with buzzing for pollen resulting in a 79% slower rate of microbial acquisition relative to scrabbling. Bee foraging behavior also affected deposition but depended on the floral organ: Scrabbling and buzzing for pollen led to greater deposition than nectaring for corolla and stamen but not nectary. Our results have implications for transmission of beneficial and pathogenic microbes among plants and pollinators, and thus the ecology and evolution of floral microbial communities.
    Note
    open access journal
    ISSN
    2150-8925
    DOI
    10.1002/ecs2.2714
    Version
    Final published version
    Sponsors
    National Science Foundation [DEB 1452386]; Dietrich School of Arts and Sciences via Pittsburgh Ecology and Evolution Postdoctoral fellowships
    ae974a485f413a2113503eed53cd6c53
    10.1002/ecs2.2714
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