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https://hdl.handle.net/2440/83170
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Type: | Journal article |
Title: | Mating patterns and pollinator mobility are critical traits in forest fragmentation genetics |
Author: | Breed, M. Ottewell, K. Gardner, M. Marklund, M. Dormontt, E. Lowe, A. |
Citation: | Heredity, 2015; In Press(2):1-7 |
Publisher: | Nature Publishing Group |
Issue Date: | 2015 |
ISSN: | 0018-067X 1365-2540 |
Statement of Responsibility: | MF Breed, KM Ottewell, MG Gardner, MHK Marklund, EE Dormontt and AJ Lowe |
Abstract: | Most woody plants are animal-pollinated, but the global problem of habitat fragmentation is changing the pollination dynamics. Consequently, the genetic diversity and fitness of the progeny of animal-pollinated woody plants sired in fragmented landscapes tend to decline due to shifts in plant-mating patterns (for example, reduced outcrossing rate, pollen diversity). However, the magnitude of this mating-pattern shift should theoretically be a function of pollinator mobility. We first test this hypothesis by exploring the mating patterns of three ecologically divergent eucalypts sampled across a habitat fragmentation gradient in southern Australia. We demonstrate increased selfing and decreased pollen diversity with increased fragmentation for two small-insect-pollinated eucalypts, but no such relationship for the mobile-bird-pollinated eucalypt. In a meta-analysis, we then show that fragmentation generally does increase selfing rates and decrease pollen diversity, and that more mobile pollinators tended to dampen these mating-pattern shifts. Together, our findings support the premise that variation in pollinator form contributes to the diversity of mating-pattern responses to habitat fragmentation. |
Keywords: | mating system plant genetic resources plant–pollinator mutualisms pollen competition pollen discounting |
Rights: | © 2013 Macmillan Publishers Limited |
DOI: | 10.1038/hdy.2013.48 |
Published version: | http://dx.doi.org/10.1038/hdy.2013.48 |
Appears in Collections: | Aurora harvest 4 Earth and Environmental Sciences publications |
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