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dc.contributor.authorAlbrecht, Gregory T.
dc.date.accessioned2020-10-11T21:47:25Z
dc.date.available2020-10-11T21:47:25Z
dc.date.issued2011-08
dc.identifier.urihttp://hdl.handle.net/11122/11327
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2011en_US
dc.description.abstractThe snow crab (Chionoecetes opilio) is a valuable commercial resource within the Bering Sea, as well as other areas in the North Pacific and Atlantic Oceans. Large populations are known to exist within the Chukchi and Beaufort Seas, including recently discovered commercial sized individuals (Beaufort). However, genetic connectivity throughout these regions has not been examined until now. Based on seven polymorphic microsatellite loci, relatively low population genetic structuring occurs throughout the Alaskan region (Gst = 0.001). This homogeneity is likely due to long-distance larval dispersal, adult migrations, and a possible recent population expansion following the last glacial maximum. Furthermore, meta-population analysis was conducted for Alaskan and Northwest Atlantic stocks. Although significant genetic divergence characterizes the West Greenland stock in relation to all other populations, low divergence (Gst = 0.005) was found between Atlantic Canada crabs and those from the Alaska region. Larval dispersal between regions is highly unlikely due to the transit distance. Therefore, low divergence is likely the result of a recent population expansion into the Northwest Atlantic <5000 years ago.en_US
dc.description.sponsorshipRasmuson Fisheries Research Center, Coastal Marine Institute and the Bureau of Ocean Energy Management, Regulation, and Enforcement (BOEMRE)en_US
dc.language.isoen_USen_US
dc.subjectsnow craben_US
dc.subjectAlaskaen_US
dc.subjectgeneticsen_US
dc.subjectBering Seaen_US
dc.subjectChukchi Seaen_US
dc.titleDefining genetic population structure and historical connectivity of snow crab (Chionoecetes opilio)en_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentMarine Science and Limnology Programen_US
dc.contributor.chairHardy, Sarah M.
dc.contributor.committeeLopez, J. Andres
dc.contributor.committeeHundertmark, Kris J.
refterms.dateFOA2020-10-11T21:47:26Z


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