James KiefferView profile
Professor
James Kieffer is a Professor in the Department of Biological Sciences at the University of New Brunswick (UNB). He is affiliated with the Cdn Rivers Institute in Saint John, NB. His research focuses on fish physiology, particularly thermal biology, environmental stress responses, and swimming performance in sturgeon species such as the shortnose sturgeon (Acipenser brevirostrum) and Atlantic sturgeon (Acipenser oxyrinchus). His work explores how these species adapt to temperature fluctuations, salinity changes, and other environmental challenges through physiological and molecular mechanisms. Dr. Kieffer holds a PhD and has published extensively on topics including critical thermal maxima (CTmax), exercise physiology in fish, and the impacts of habitat substrates on swimming behavior. His research also addresses practical concerns such as the physiological effects of catch-and-release angling and the effects of triploidy on fish health. Key areas of investigation include the physiological responses of sturgeon to acute stressors like heat, salinity shifts, and exhaustive exercise. His studies often integrate behavioral observations with metabolic and hematological analyses to understand organismal performance limits in aquatic environments. While no specific scientific awards are listed, his contributions to sturgeon conservation and fish physiology have been documented in peer-reviewed journals. His lab at the Cdn Rivers Institute likely supports field and laboratory-based studies on freshwater and marine species under varying environmental conditions.








