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dc.contributor.authorChythlook, John S.
dc.date.accessioned2016-08-10T23:37:02Z
dc.date.available2016-08-10T23:37:02Z
dc.date.issued2000-12
dc.identifier.urihttp://hdl.handle.net/11122/6772
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2000en_US
dc.description.abstractIn Pleistocene Beringia, large-scale glaciations exposed high latitude species to variable environmental conditions that created disjunct populations of terrestrial and marine species. The general nature of the dynamic biogeographic history of Beringia can be assessed by studying genetic patterns across many Beringian organisms. Mitochondrial DNA sequences were used to study the phylogenetic and phylogeographic structure of the threespine stickleback, Gasterosteus aculeatus. A 714 bp fragment of the cytochrome b gene was sequenced from 66 individuals from 17 locations extending from southeast Alaska northwest to coastal Siberia. These data were combined with 36 homologous cyt-b sequences from a previous study to provide a preliminary assessment of patterns of genetic variation in threespine stickleback- with a particular emphasis on Alaskan populations. Cytochrome b data show the existence of two major clades in the Pacific, with an extensive zone of overlap that spans the Bering Straits.en_US
dc.language.isoen_USen_US
dc.titleSystematics of Beringian threespine sticklebacksen_US
dc.typeThesisen_US
refterms.dateFOA2020-03-05T10:46:42Z


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