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Genetics Section

Cochrane, Bruce [1], Clark, Justine [2], Franck, Alan [2].

Spatial Distribution of genetic variation in Chrysopsis delaneyii, a newly described aster species endemic to peninsular Florida.

Chrysopsis delaneyii (Asteraceae) is a newly described species that is found in a patchy distribution along the Lake Wales and Atlantic Ridges of central and eastern Florida. Many of the populations along the Lake Wales Ridge have been extirpated or are in decline, while many of those on the Atlantic Ridge appear to be thriving. As a means of determining whether separate conservation strategies should be developed for the two groups of populations, we have examined their genetic relatedness. Analysis of chloroplast DNA sequence variation has revealed the presence of two haplotypes which, for the most part, distinguish between the two sets of populations. To date, only one population has been found to contain both. We are now examining nuclear sequence variation to determine the distribution of total genetic variation within the species. Results of these analyses, as well as comparisons to other species of Chrysopsis native to Florida, will be described.


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1 - University of South Florida, College of Arts And Science, Beh201, 4202 E Fowler Ave, Tampa, Florida, 33620, USA
2 - University of South Florida, Department of Biology, Sca 110, 4202 Fowler Avenue, Tampa, Florida, 33620-5150, USA

Keywords:
Chrysopsis
Asteraceae
Chloroplast DNA
Florida.

Presentation Type: Oral Paper
Session: 1-14
Location: 412/Hilton
Date: Monday, August 15th, 2005
Time: 11:30 AM
Abstract ID:72


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