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Full-Text Articles in Physiology
Effects Of Winter And Summer Thermal Variability Regimes On Growth And Metabolism In Brook Trout (Salvelinus Fontinalis), Spenser Chicoine
Effects Of Winter And Summer Thermal Variability Regimes On Growth And Metabolism In Brook Trout (Salvelinus Fontinalis), Spenser Chicoine
All NMU Master's Theses
Brook trout (Salvelinus fontinalis) is a cold-water species with a narrow range of thermal tolerance. Climate change projections show that in addition to increases in average temperatures worldwide, daily thermal variability is increasing. Such conditions could prove challenging for brook trout and other ectotherms that are adapted to small temperature ranges. This research investigates how the growth and metabolic capacities of brook trout respond to long-term exposure to thermal variation. Groups of fish were reared under three thermal regimes: constant baily temperature, a 4°C daily range, and an 8°C daily range in a controlled lab setting. This was …
Growth Patterns And Size-Group Interactions In Hatchery-Reared Age-0 Lake Sturgeon, Joseph M. Susco
Growth Patterns And Size-Group Interactions In Hatchery-Reared Age-0 Lake Sturgeon, Joseph M. Susco
All NMU Master's Theses
Raising lake sturgeon (Acipenser fulvescens) in hatcheries is an important tool for rehabilitation and conservation, but is expensive. When hatchery sturgeon do not grow large enough before stocking, their odds of survival decline significantly and resources are wasted. We investigated the potential limiting effect of large lake sturgeon on the growth rate of smaller conspecifics housed in the same tank, and the possibility of increasing growth rates by separating individuals into different size classes. We also examined plasma cortisol levels of the different size classes over time as an indicator of stress levels, and levels of free plasma …