Changes in Blood Lactic Acid Concentrations in Alewives (Alosa pseudoharengus) During Passage Through a Pool and Weir Fishway
alewife, fish ladder, lactic acids, migration, pool, pool and weir, upstream, upstream migration, weir
Journal or Book Title
Journal of the Fisheries Research Board of Canada
Blood lactic concentration of anadromous alewives (Alosa pseudoharengus) sampled during their upstream migration through a pool and weir fishway was not extremely high (46.7 mg/100 ml) and the degree of exercise exhibited during ascent was judged to be moderate. For fish that were subjected experimentally to severe exercise, the concentration (108.7mg/100ml) was more than five times that for rested fish (18.9mg/100ml). Of the three groups of fish sampled directly from the fishway pools, only one had an average concentration that differed significantly from that for the rested state.