title: A different perspective on the phylogenetic relationships of the Moxostomatini (Cypriniformes: Catostomidae) based on cytochrome-b and Growth Hormone intron sequences.
abstract: We have examined phylogenetic relationships of suckers of tribe Moxostomatini (Cypriniformes, Catostomidae) using cytochrome-b and Growth Hormone gene intron sequences. Phylogenies were significantly different from recent estimates of relationships based primarily on morphology (Smith, 1992) and cytochrome-b sequences (Harris et al., 2002). Overall, there was little support for many basal nodes in the phylogeny, however it was clear that Scartomyzon and Moxostoma were not monophyletic, despite morphological evidence provided Robins and Raney (1956, 1957), Jenkins (1970), and Smith (1992). Growth Hormone sequences provided good support for a monophyletic Western Scartomyzon lineage and thus suggested a single ancestral invasion of Scartomyzon-like fishes into drainages of Texas and Mexico. Phylogenetic relationships of Western Scartomyzon are structured geographically and do not conform well to current taxonomy.
authors.affiliation: Tulane University Museum of Natural History, Belle Chasse, LA 70037, USA. mclements@necc.mass.edu
authors.forename: Mark D
authors.initials: MD
authors.lastname: Clements
authors.forename: Henry L
authors.initials: HL
authors.lastname: Bart
authors.forename: David L
authors.initials: DL
authors.lastname: Hurley
mesh_terms: D000818:Animals; D001499:Bayes Theorem; D002467:Cell Nucleus; D003531:Cypriniformes / Q000145:classification* / Q000235:genetics; D045303:Cytochromes b / Q000235:genetics*; D013006:Growth Hormone / Q000235:genetics*; D007438:Introns; D016013:Likelihood Functions; D008800:Mexico; D010802:Phylogeny; D017422:Sequence Analysis, DNA; D013781:Texas
chemical_list: D013006:Growth Hormone; D045303:Cytochromes b