{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/87840"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/87840","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"The Phylogenetic Relationships Among Extant Catfishes, With Special Reference to Ictaluridae (Otophysi: Siluriformes)","abstract":"Cytochrome b suggested cryptic diversity within several species of Noturus. Relationships among members of the subgenus Rabida were resolved and in many cases well supported. Relationships among Schilbeodes were poorly resolved. A calibrated substitution rate identified a period between 8 and 2 million years ago in which the majority of cladogenesis took place in Rabida. A novel hypothesis of relationships among surface-dwelling ictalurid genera is provided in which Ameiurus is the sister group to a clade composed of Ictalurus, Pylodictis and Noturus, in which Ictalurus is the sister group to Pylodictis and Noturus.","abstract_html":"Cytochrome b suggested cryptic diversity within several species of Noturus. Relationships among members of the subgenus Rabida were resolved and in many cases well supported. Relationships among Schilbeodes were poorly resolved. A calibrated substitution rate identified a period between 8 and 2 million years ago in which the majority of cladogenesis took place in Rabida. A novel hypothesis of relationships among surface-dwelling ictalurid genera is provided in which Ameiurus is the sister group to a clade composed of Ictalurus, Pylodictis and Noturus, in which Ictalurus is the sister group to Pylodictis and Noturus.","abstract_has_math":false,"creators":["Hardman, Michael"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Animal Biology","degree_department":null,"school":null,"contributors":["Page, Lawrence M."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-28T16:59:57Z","date_published":"2015-09-28T16:59:57Z","updated_at":"2026-07-22T22:26:31Z","subjects":["Biology, Genetics"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3070318"],"render_values":[{"text":"(MiAaPQ)AAI3070318","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/87840","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Page, Lawrence M."]},{"key":"dc:creator","label":"Author","values":["Hardman, Michael"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-28T16:59:57Z","10000-01-01","2002"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Animal Biology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Biology, Genetics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/87840","(MiAaPQ)AAI3070318"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Cytochrome b suggested cryptic diversity within several species of Noturus. 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