Abstract Detail

Bryological and Lichenological Section/ABLS

Carter, Benjamin [1], Stenøien, Hans [2], Shaw, Blanka [3], Larraín, Juan [4], Von Konrat , Matt [5], Shaw, Jonathan [6].

Is there a correlation between phylogenetic distance and gene flow among closely related species? A test using the Frullania tamarisci complex.

As the time since divergence between two taxa increases, we expect there to be a decrease in the amount of gene flow between the taxa. We test this hypothesis using the Frullania tamarisci group, a species complex of at least eight distinct liverwort lineages that occur across temperate North America, Europe and Asia. We generated a phylogeny of the group using chloroplast and ITS sequence data to assess evolutionary relationships within the complex and identify the relative divergence times among the taxa. We then employed microsatellite data to estimate the amount of gene flow among the taxa in order to test whether more distantly related taxa experience less gene flow than closely related taxa. Our preliminary results indicate the utility of combining sequence and microsatellite in understanding recent diversification in bryophytes.

1 - Duke University, Biology, Box 90338, Durham, NC, 27708, USA
2 - Norwegian University of Science and Technology, Museum of Natural History and Archaeology, n-7491 , Trondheim, 7491 , Norway
3 - Box 90338, Durham, NC, 27708, USA
4 - The Field Museum, Science and Education, 1400 South Lake Shore Drive, Chicago, IL, 60605, USA
5 - The Field Museum, Botany, 1400 S Lake Shore Drive, Chicago, IL, USA
6 - 130 Science Drive, Box 90338, Durham, NC, 27708, USA, 919/660-7344

Keywords:
bryophytes
diversification
Cryptic species
molecular systematics.

Presentation Type: Oral Paper:Papers for Sections
Session: 29
Location: River Fork/Grove
Date: Tuesday, July 29th, 2014
Time: 3:00 PM
Number: 29007
Abstract ID:679
Candidate for Awards:None