Dr. Henry L. Bart, Jr.
Professor of Ecology and Evolutionary Biology
Bldg. A-3, Wild Boar Rd.
General Interests: Current work with cypriniforms focuses on eastern suckers, especially species in Subfamily Ictiobinae. I am conducting a comprehensive systematic revision of the subfamily, including traditional morphological study, geometric morphometrics and molecular systematics (screening and sequencing mitochondrial and nuclear genetic markers). Ictiobines are the oldest (fossils dating to back to Paleocene Epoch) and arguably the most basal suckers. We have isolated a new genetic marker for investigating interrelationships of suckers and other cypriniform fishes (the nuclear growth hormone gene, GH). We succeeded in sequencing the coding regions and most of the introns of two paralogous copies of GH in Ictiobus bubalus. The GH coding region has proven to be suitable for examining higher level relationships, including ordinal level); introns are more appropriate for examining species-level relationships. One of my graduate students (Mark Clements) is studying phylogeography of suckers of the genus Moxostoma, and another student (Mollie Cashner) is studying evolution of nest association in minnows of the genus Nocomis and Subgenus Hydrophlox of genus Notropis.
Taxa: Recent and Fossil species; Families Catostomidae, Cyprinidae