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Abstract Detail



Pteridological Section/AFS

WOLF , PAUL G [1], Rowe, Carol A [2], Schilling, Martin P [3], Der, Joshua [4], Visger, Clayton J [5], Thomson, John A [6].

Origins of Pteridium on Galapagos Islands.

Ferns disperse by haploid spores, which are produced in large numbers and can travel long distances in air currents. This has enabled ferns to become established on most oceanic islands. Here we follow-up on reports that Pteridium (Dennstaedtiaceae; bracken)   may be represented by more than one taxon on the Galapagos Islands. We use nucleotide sequences from two chloroplast genes and two nuclear genes to examine phylogeography of Pteridium collected at 16 sites across three of the main islands. We explore origins with comparisons of Pteridium from mainland South America, and within the context of a previous global phylogeny of the genus. We also use flow cytometry to test for polyploid samples.


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1 - Utah State University, Department Of Biology, 5305 OLD MAIN HILL, Logan, UT, 84322-5305, USA
2 - Utah State University, Biology, 5305 Old Main Hill, Logan, UT, 84322, United States
3 - Utah State University, Biology, 5205 Old Main Hill, Logan, Utah, 84322, United States
4 - Penn State University, Department Of Biology, 201 Life Sciences Building, University Park, PA, 16802, USA
5 - University of Florida, Florida Museum of Natural History and Department of Biology, Gainesville, FL, 32611, United States
6 - National Herbarium of New South Wales, Royal Botanic Gardens and Domain Trust, Sydney, NSW, 2000, Australia

Keywords:
fern
island
colonization
hybridization.

Presentation Type: Oral Paper:Papers for Sections
Session: 12
Location: Pines North/Boise Centre
Date: Monday, July 28th, 2014
Time: 1:45 PM
Number: 12002
Abstract ID:144
Candidate for Awards:Edgar T. Wherry award


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