Metabolic responses of adult Bluntnose Minnows (Pimephales notatus) to a range of thermal conditions

Abstract

"Climatic temperature fluctuations could have a direct effect on fitness and aerobic scope (AS) of fish. Aerobic scope represents the difference in maximum metabolic rate [MMR] and standard metabolic rate [SMR]. We conducted tests on adult minnows (Pimephales notatus) to monitor their metabolism under four temperatures (13°C, 18°C, 23°C, and 28°C). Fish metabolism was determined using a static- flow respirometry system. Mass-specific metabolic rates of the fish indicated that uniformity in standard metabolic rate, but statistically different aerobic scopes across temperatures. Fish metabolic performance across temperatures indicates the plasticity of this species in a future warmer climate."