Examining patterns of genetic variation in Canadian marine molluscs through DNA barcodes

dc.contributor.advisorHebert, P.D.N.
dc.contributor.authorLayton, Kara
dc.date.accessioned2013-02-12T16:27:53Z
dc.date.available2013-02-12T16:27:53Z
dc.date.copyright2012-01
dc.date.created2013-02-07
dc.date.issued2013-02-12
dc.degree.departmentDepartment of Integrative Biologyen_US
dc.degree.grantorUniversity of Guelphen_US
dc.degree.nameMaster of Scienceen_US
dc.degree.programmeIntegrative Biologyen_US
dc.description.abstractIn this thesis I investigate patterns of sequence variation at the COI gene in Canadian marine molluscs. The research presented begins the construction of a DNA barcode reference library for this phylum, presenting records for nearly 25% of the Canadian fauna. This work confirms that the COI gene region is an effective tool for delineating species of marine molluscs and for revealing overlooked species. This study also discovered a link between GC content and sequence divergence between congeneric species. I also provide a detailed analysis of population structure in two bivalves with similar larval development and dispersal potential, exploring how Canada’s extensive glacial history has shaped genetic structure. Both bivalve species show evidence for cryptic taxa and particularly high genetic diversity in populations from the northeast Pacific. These results have implications for the utility of DNA barcoding both for documenting biodiversity and broadening our understanding of biogeographic patterns in Holarctic species.en_US
dc.identifier.urihttp://hdl.handle.net/10214/5505
dc.language.isoenen_US
dc.publisherUniversity of Guelphen_US
dc.rights.licenseAll items in the Atrium are protected by copyright with all rights reserved unless otherwise indicated.
dc.subjectsequence variationen_US
dc.subjectCOI geneen_US
dc.subjectmarine molluscsen_US
dc.subjectDNA barcodeen_US
dc.titleExamining patterns of genetic variation in Canadian marine molluscs through DNA barcodesen_US
dc.typeThesisen_US

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Layton_Kara_201302_MSc.pdf
Size:
2.21 MB
Format:
Adobe Portable Document Format
Description:
Thesis
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
317 B
Format:
Item-specific license agreed upon to submission
Description: