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
Author
Petanidou, TheodoraPrice, 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 & EnvironmUniv Arizona, Dept Ecol & Evolutionary Biol
Issue Date
2018-05
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ELSEVIER SCIENCE BVCitation
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.2018.03.008Rights
© 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 2018ISSN
1146609XVersion
Final accepted manuscriptSponsors
Fulbright Foundation; European Commission [GOCE-CT-2003-506675]Additional Links
http://linkinghub.elsevier.com/retrieve/pii/S1146609X17303521ae974a485f413a2113503eed53cd6c53
10.1016/j.actao.2018.03.008