Coaster Brook Trout in Pictured Rocks National Lakeshore: An Update on the Physiological Ecology of PIRO Coasters [ABSTRACT]
Leonard JB. 2005. Coaster Brook Trout in Pictured Rocks National Lakeshore: An Update on the Physiological Ecology of PIRO Coasters [ABSTRACT]. Pages 23. In National Park Service: Western Great Lakes Research Conference. Marquette, MI. March 30-31, 2005. National Park Service. Fourth Annual
Coaster brook trout restoration has been ongoing in the waters of Pictured Rocks National Lakeshore (PIRO) since 1997, primarily through the stocking of Tobin Harbor strain juveniles which are derived from the coaster brook trout native to Isle Royale. Beginning in 2001, intensive monitoring of juvenile brook trout movements (wild and stocked) using passive integrated transmitter stationary systems (TIRFID) was begun. Additionally, stocked and wild brook trout have been assessed for physiological changes indicative of differential growth rate and indicators of classical salmonid smoltification. Initial data suggests that both wild and stocked brook trout move between PIRO tributaries and Lake Superior. Differences between resident and stocked fish metabolic physiology suggest the potential for enhanced growth in the coaster strain, however, neither strain appears to demonstrate smoltification. The data suggests that both wild and stocked brook trout at PIRO make use of the Lake Superior environment and that there are likely to be differences in strain-specific growth for the fish in PIRO which may be relevant to the expression of coaster behavior.
- Type
- Conference Proceeding Paper
- Authors
- Leonard, Jill
- Units
- PIRO
- Keywords
- Anadromous Fish, Coaster Brook Trout (Salvelinus fontinalis), Growth, Lake Superior, Metabolism, Physiology, smoltification