The Lesser Snow Goose has been shown to exhibit imprinted positive assortative mating on the basis of its color phases, blue and white, and it has been proposed that the geographic cline of the color phases reflects a historic allopatry of the phases. Using ddRAD-seq, thousands of SNPs were analyzed in both phases and in colonies across the range of the species to examine genetic evidence for separation of the color phases or along the two migratory pathways, which have also been hypothesized to be separate. These analyses did not reveal any genetic differentiation between the color phases nor by migratory pathway. These data are consistent with a single panmictic population. The Lesser Snow Goose is a poor candidate for sympatric speciation, as gene flow between the phases is high, and assortative mating is focused on a single locus.
","abstract_html":"<p>The Lesser Snow Goose has been shown to exhibit imprinted positive assortative mating on the basis of its color phases, blue and white, and it has been proposed that the geographic cline of the color phases reflects a historic allopatry of the phases. Using ddRAD-seq, thousands of SNPs were analyzed in both phases and in colonies across the range of the species to examine genetic evidence for separation of the color phases or along the two migratory pathways, which have also been hypothesized to be separate. These analyses did not reveal any genetic differentiation between the color phases nor by migratory pathway. These data are consistent with a single panmictic population. The Lesser Snow Goose is a poor candidate for sympatric speciation, as gene flow between the phases is high, and assortative mating is focused on a single locus.</p>","abstract_has_math":false,"creators":["Horowitz, Brent B."],"institution":null,"degree_name":"M.S.","degree_level":"Masters Thesis","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Thomas W. Quinn, Ph.D.","Robin Tinghitella","Scott Nichols"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2016,"date_issued":"2016-01-01T08:00:00Z","date_published":"2016-01-01T08:00:00Z","updated_at":"2026-07-24T02:03:26Z","subjects":["Assortative mating","Lesser snow goose","Population genetics","Genetics and Genomics"],"languages":["en"],"rights":["Copyright is held by the author. User is responsible for all copyright compliance.
"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://digitalcommons.du.edu/etd/1211","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Thomas W. Quinn, Ph.D.","Robin Tinghitella","Scott Nichols"]},{"key":"dc:creator","label":"Author","values":["Horowitz, Brent B."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.available","label":"Dc Date Available","values":["2017-02-17T08:00:00Z"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Assortative mating","Lesser snow goose","Population genetics","Genetics and Genomics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright is held by the author. User is responsible for all copyright compliance.
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"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Panmixia Across the Range of the Assortatively Mating Lesser Snow Goose"]}]}],"canonical_facts":{"dc:contributor":["Thomas W. Quinn, Ph.D.","Robin Tinghitella","Scott Nichols"],"dc:creator":["Horowitz, Brent B."],"dc:date.available":["2017-02-17T08:00:00Z"],"dc:description.abstract":["The Lesser Snow Goose has been shown to exhibit imprinted positive assortative mating on the basis of its color phases, blue and white, and it has been proposed that the geographic cline of the color phases reflects a historic allopatry of the phases. Using ddRAD-seq, thousands of SNPs were analyzed in both phases and in colonies across the range of the species to examine genetic evidence for separation of the color phases or along the two migratory pathways, which have also been hypothesized to be separate. These analyses did not reveal any genetic differentiation between the color phases nor by migratory pathway. These data are consistent with a single panmictic population. The Lesser Snow Goose is a poor candidate for sympatric speciation, as gene flow between the phases is high, and assortative mating is focused on a single locus.
"],"dc:format":["application/pdf"],"dc:identifier":["https://digitalcommons.du.edu/etd/1211"],"dc:language":["en"],"dc:rights":["Copyright is held by the author. User is responsible for all copyright compliance.
"],"dc:subject":["Assortative mating","Lesser snow goose","Population genetics","Genetics and Genomics"],"dc:title":["Panmixia Across the Range of the Assortatively Mating Lesser Snow Goose"],"thesis:degree_level":["Masters Thesis"],"thesis:degree_name":["M.S."]},"updated_at":"2026-07-24T02:03:26Z"}