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    Pollination and reproduction of an invasive plant inside and outside its ancestral range

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    Solanum_March_11.pdf
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    Final Accepted Manuscript
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    Author
    Petanidou, Theodora
    Price, Mary V.
    Bronstein, Judith L.
    Kantsa, Aphrodite
    Tscheulin, Thomas
    Kariyat, Rupesh
    Krigas, Nikos
    Mescher, Mark C.
    De Moraes, Consuelo M.
    Waser, Nickolas M.
    Affiliation
    Univ Arizona, Sch Nat Resources & Environm
    Univ Arizona, Dept Ecol & Evolutionary Biol
    Issue Date
    2018-05
    Keywords
    Ancestral range
    Bees
    Invaded range
    Pollination success
    Sexual allocation
    Solanum elaeagnifolium
    
    Metadata
    Show full item record
    Publisher
    ELSEVIER SCIENCE BV
    Citation
    Petanidou, T., Price, M. V., Bronstein, J. L., Kantsa, A., Tscheulin, T., Kariyat, R., ... & Waser, N. M. (2018). Pollination and reproduction of an invasive plant inside and outside its ancestral range. Acta Oecologica, 89, 11-20. https://doi.org/10.1016/j.actao.2018.03.008
    Journal
    ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
    Rights
    © 2018 Elsevier Masson SAS. All rights reserved.
    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
    Comparing traits of invasive species within and beyond their ancestral range may improve our understanding of processes that promote aggressive spread. Solanum elaeagnifolium (silverleaf nightshade) is a noxious weed in its ancestral range in North America and is invasive on other continents. We compared investment in flowers and ovules, pollination success, and fruit and seed set in populations from Arizona, USA ("AZ") and Greece ("GR"). In both countries, the populations we sampled varied in size and types of present-day disturbance. Stature of plants increased with population size in AZ samples whereas GR plants were uniformly tall. Taller plants produced more flowers, and GR plants produced more flowers for a given stature and allocated more ovules per flower. Similar functional groups of native bees pollinated in AZ and GR populations, but visits to flowers decreased with population size and we observed no visits in the largest GR populations. As a result, plants in large GR populations were pollen-limited, and estimates of fecundity were lower on average in GR populations despite the larger allocation to flowers and ovules. These differences between plants in our AZ and GR populations suggest promising directions for further study. It would be useful to sample S. elaeagnifolium in Mediterranean climates within the ancestral range (e.g., in California, USA), to study asexual spread via rhizomes, and to use common gardens and genetic studies to explore the basis of variation in allocation patterns and of relationships between visitation and fruit set.
    Note
    24 month embargo; published online: 10 April 2018
    ISSN
    1146609X
    DOI
    10.1016/j.actao.2018.03.008
    Version
    Final accepted manuscript
    Sponsors
    Fulbright Foundation; European Commission [GOCE-CT-2003-506675]
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S1146609X17303521
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.actao.2018.03.008
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