3:15 SURVIVAL AND RECOLONIZATION MECHANISMS OF UNIONID MUSSEL SPECIES IN LAKE ST. CLAIR.
D.T. Zanatta and G.L. Mackie. Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1

3:30 FISHING FOR ANSWERS: HOSTING FRESHWATER MUSSEL POPULATIONS IN LAKE ERIE DRAINAGES OF SOUTHEASTERN MICHIGAN.
R. Sherman Mulcrone. University of Michigan, Museum of Zoology, Mollusk Division, Ann Arbor, Michigan, 48109

3:45 QUANTITATIVE ASSESSMENT OF FRESHWATER MUSSELS IN THE SYDENHAM RIVER, ONTARIO.
J. Di Maio¹, J.L. Metcalfe-Smith¹, and P.S. Pooler². ¹National Water Research Institute, P.O. Box 5050, 867 Lakeshore Road, Burlington, Ontario, Canada L7R 4A6, ²USGS - Biological Resources Division, Aquatic Ecology Laboratory, 1700 Leetown Road, Kearneysville, WV, USA 25443

4:00 EVIDENCE OF DENSITY DEPENDENCE IN LONG-TERM CENSUSES OF FRESHWATER MOLLUSKS.
R.T. Dillon. Department of Biology, College of Charleston, Charleston, South Carolina, USA 29424

4:15 HABITAT IMPROVEMENT FOR AN ENDANGERED SPRINGSNAIL IN SOUTHWEST IDAHO.
C.D. Myler and G.W. Minshall. Department of Biology, Idaho State University, Pocatello, ID 83209-8007, USA

4:30 RESULTS OF AN AQUATIC MACROINVERTEBRATE SURVEY OF THE CUATRO CIÉNEGAS BASIN, COAHUILA, MÉXICO.
E. Dinger¹, J.C. Marks¹, A. Cohen², and D.A. Hendrickson². ¹Deptartment of Biology, Northern Arizona University, Flagstaff, Arizona 86011, ²Section of Intergrative Biology, University of Texas, Austin, Texas 78712