Genotypic diversity and population structure in Dictyostelium discoideum

Simple item page
dc.contributor.advisorStrassmann, Joan E.
dc.contributor.advisorQueller, David C.
dc.creatorSmith, Margaret Harris
dc.date.accessioned2009-06-04T08:15:27Z
dc.date.available2009-06-04T08:15:27Z
dc.date.issued2004
dc.description.abstractCurrent population genetics literature presumes a lack of population structure in microorganisms due to their large population sizes, ubiquitous dispersal, and absence of geographic barriers. Contrary to this, we found evidence of great population subdivision in the social amoeba, Dictyostelium discoideum. Pairwise values of Fst and Rst were significant between samples collected from sites separated by distances from 100m--10,000km (P < 0.05 after sequential Bonferroni). Three- and two-level analyses of molecular variance (AMOVA) confirmed the existence of population structure (Fst 0.30, Rst = 0.48, P < 0.001 for three-level; Fst = 0.297, Rst = 0.474, P < 0.001 for two-level). Further, linearized pairwise Fst values were significantly correlated with natural logarithm of geographic distance (r = 0.471, P < 0.012) indicating isolation by distance. Genotypic diversity of populations remained moderate (Nei (1987) average gene diversity ∼0.50) in spite of the decreased population diversity expected with such Fst and Rst values.
dc.format.extent20 p.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.callnoTHESIS ECOL. 2004 SMITH
dc.identifier.citationSmith, Margaret Harris. "Genotypic diversity and population structure in Dictyostelium discoideum." (2004) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/17730">https://hdl.handle.net/1911/17730</a>.
dc.identifier.urihttps://hdl.handle.net/1911/17730
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectMolecular biology
dc.subjectGenetics
dc.titleGenotypic diversity and population structure in Dictyostelium discoideum
dc.typeThesis
dc.type.materialText
thesis.degree.departmentEcology and Evolutionary Biology
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.nameMaster of Arts
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1419130.PDF
Size:
878.88 KB
Format:
Adobe Portable Document Format
Download
Collections
Rice University Electronic Theses and Dissertations