Patterns of habitat fragmentation and contaminant exposure in longnose dace (Rhinichthys cataractae)

Simple item page
atmire.migration.oldid2821
dc.contributor.advisorJackson, Leland
dc.contributor.advisorRogers, Sean
dc.contributor.authorTunna, Haley
dc.date.accessioned2015-01-08T16:17:51Z
dc.date.available2015-02-23T08:00:33Z
dc.date.issued2015-01-08
dc.date.submitted2014en
dc.description.abstractHuman-induced environmental change occurs rapidly and challenges the persistence of organisms. I studied patterns of contaminants and habitat fragmentation on longnose dace (Rhinichthys cataractae). I compared liver biotransformation and age-structured sex ratios at sites upstream and downstream of anthropogenic inputs. Downstream of anthropogenic inputs, female biases in the oldest age classes shift to female biases in all age classes relative to upstream sites. Liver biotransformation reflects an urban footprint. Together these results suggest that contaminants may adversely affect fish health. Dams and weirs are barriers to fish movement and can reduce connectivity and genetic diversity of populations. Results from population genetic analyses using microsatellite DNA markers show substantial gene flow and overall weak population genetic structure across Alberta. Consequently, fragmentation did not alter connectivity of dace in Alberta. Overall, longnose dace in Alberta have spatially and temporally variable sex ratios and exhibit weak population structure in association with human activities.en_US
dc.identifier.citationTunna, H. (2015). Patterns of habitat fragmentation and contaminant exposure in longnose dace (Rhinichthys cataractae) (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/27275en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/27275
dc.identifier.urihttp://hdl.handle.net/11023/1993
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEcology
dc.subjectGenetics
dc.subject.classificationmicrosatelliteen_US
dc.subject.classificationmolecular ecologyen_US
dc.subject.classificationfragmentationen_US
dc.subject.classificationcontaminantsen_US
dc.subject.classificationRhinichthys cataractaeen_US
dc.subject.classificationfishen_US
dc.subject.classificationenvironmental changeen_US
dc.titlePatterns of habitat fragmentation and contaminant exposure in longnose dace (Rhinichthys cataractae)
dc.typemaster thesis
thesis.degree.disciplineBiological Sciences
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
ucalgary_2014_tunna_haley.pdf
Size:
3.34 MB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.65 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Open Theses and Dissertations