Hatry, CharlesThiem, Jason D.Binder, Thomas R.Hatin, DanielDumont, PierreStamplecoskie, Keith M.Molina, Juan M.Smokorowski, Karen E.Cooke, Steven J.2024-04-262024-04-262013-06-26https://hdl.handle.net/20.500.14394/24618<p>Charles Hatry is a Masters Student at Carleton University studying the biological effectiveness of redhorse (Moxostoma spp.) passage at Vianney-Legendre fishway in Quebec. Charles has worked on fish movement and tracking studies over the past 4 and a half years at Carleton University under the supervision of Dr. Steven Cooke, as well as working on the creation of CanFishPass, a national database of upstream fishpassage related information for Canada.</p>Fishways have been constructed to maintain longitudinal connectivity for fish in fluvial systems impacted by barriers but there are relatively few studies of their biological effectiveness. Trend analysis of the CanFishPass fishway database showed that only 9% of Canadian fishways have been studied using methods that enable proper evaluation of biological effectiveness. A biological evaluation of the Vianney-Legendre fishway in Quebec for the passage of three redhorse species (Moxostoma anisurum, M. carinatum, M. macrolepidotum; silver, river and shorthead redhorse respectively) showed attraction efficiencies of 51%, 12%, 50%, respectively, and passage efficiencies of 88%, 50% and 69% respectively. For all species, failures in the fishway were likely to occur beforethe second turning basin in the fishway (84% of failures). Shorthead redhorse had higher maximum metabolic rates and were faster swimmers than silver and river redhorse. River redhorse recovered their lactate and glucose concentrations more quickly than silver and shorthead redhorse, and river redhorse were second in terms of metabolic recovery and swim speed. Fish sampled from the top of the fishway had nearly identical lactate, glucose and pH values compared to control fish. Additional research is required to understand how organismal performance, environmental conditions, and other factors interact with fishway designs to dictate which fish are successful and to inform research of future fishways. Our research suggests that there may be an opportunity for a rapid assessment approach where manual chasing and sampling of fish from the top of the fishway are used to determine which species (or sizes of fish) are exceeding their physiological capacity during passage.event