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Abstract Detail


Tropical Biology Section

Lagomarsino, Laura P. [1], Kress, John [2], Gowda, Vinita [3], Temeles, Ethan J. [4], Specht, Chelsea [5].

Phylogeny and Floral Evolution of Heliconia section Heliconia.

Heliconia (Heliconiaceae) is an economically and ecologically important genus of tropical monocots native primarily to the neotropics. The hummingbird pollination ecology of many species of Heliconia is well understood, but previous studies have not investigated these systems within a phylogenetic context due to the lack of a robust phylogeny. Here, the phylogeny of Heliconia subgenus Heliconia section Heliconia (a putative monophyletic clade within the genus) will is reconstructed using five molecular markers from both the nuclear and chloroplast genomes using the principles of parsimony, maximum likelihood, and Bayesian inference. Floral morphological traits relevant to pollination biology are reconstructed along this phylogeny. Floral evolution in the group is paired with pollination biology. Of particular interest are the evolutionary relationships and reconstructed differences in floral morphology between two Heliconia species participating in a well studied and extremely specialized hummingbird pollination system in the Caribbean.


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1 - Smithsonian Institution, Botany, Natural Museum of Natural History, MRC-166/Botany, NMNH, PO Box 37012, Washington, DC, 20560-0166, USA
2 - Smithsonian, Botany, PO Box 37012, Washington, D.C, 20013-7012, USA
3 - George Washington University, Department of Biological Sciences, Lisner Hall 340, 2023 G Street, NW, Washington, DC, 20052, USA
4 - Amherst College, Department of Biology, Mcguire Life Sciences Building, Amherst, Massachusetts, 01002, USA
5 - University of California, Berkeley, Plant and Microbial Biology, 111 Koshland Hall MC 3102, Berkeley, CA, 94720-3102, USA

Keywords:
Heliconia
phylogenetics
floral evolution
bird pollination
Caribbean biodiversity.

Presentation Type: Oral Paper:Papers for BSA Sections
Session: 15
Location: Alpine A/Snowbird Center
Date: Monday, July 27th, 2009
Time: 10:15 AM
Number: 15001
Abstract ID:841


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