Spatial and Temporal Movements of a Riverine Brook Trout Population

Movement and growth indicators in resident and adfluvial coaster brook trout (Salvelinus fontinalis) in the Hurricane River, Lake Superior, Michigan, USA

“…Given that the protective stream regulations that were in effect during this study are designed for short-term application, it may not be feasible to continue to evaluate this population without further angling impacts. The peak time (autumn) for stream-lake movement of coaster brook trout in the Hurricane River parallels that documented for other populations of anadromous and stream resident brook trout (Curry et al, 2002;Gowan and Fausch, 1996;Hilderbrand and Kershner, 2000;Josephson and Youngs, 1996;Lenormand et al, 2004;Smith and Saunders, 1958) as well as other populations of Lake Superior coasters Mucha and Mackereth, 2008). Fall movement is at least partly linked to spawning, as gravid and spawned out brook trout were documented in the Hurricane River during fall 2006 and 2007.…”

“…Spawning habitat of adfluvial coasters is in the tributaries while feeding and survival habitat is located within Lake Superior. Peak movement for both resident and anadromous brook trout in other regions has been reported in the spring during run-off and in the fall in association with the spawning season (Curry et al, 2002;Gowan and Fausch, 1996;Hilderbrand and Kershner, 2000;Josephson and Youngs, 1996;Lenormand et al, 2004;Smith and Saunders, 1958). In some other similar salmonid species, such as cutthroat trout (Oncorhynchus clarki; Saiget et al, 2007;Trotter, 1989) and bull trout (Salvelinus confluentus; Brenkman et al, 2007), a flexible migratory pattern has been observed where juvenile fish move out of their natal stream and, before maturing and embarking on a spawning migration, may move in and out of several non-natal estuaries/ tributaries.…”

Seasonal cues of Arctic grayling movement in a small Arctic stream: the importance of surface water connectivity

“…Upstream migrations occurring shortly after ice-out are common among fishes (Curry et al 2002;Schneider et al 2010), however the upstream surge of site fidelity fish here is noteworthy. While we observed fish entering Crea Creek throughout summer, as evidenced by fyke net sampling, 63 % of the returning site-fidelity fish migrated into Crea Creek Table 2 Model selection statistics for the top five ranking negative binomial regression models relating daily counts of juvenile and adult (separate models) Arctic grayling migrating out of a small tundra stream in 2012 and 2013 to environmental variables and fish size: L-L = log-likelihood; AIC c = small sample size corrected Akaike information criterion; ΔAIC c = difference in AIC c for a given model compared to top-ranked model; w i = Akaike weight; K = number of parameters; FL pm = mean fork length of potential migrants within the stream for each day of modeling period; T min = daily minimum stream temperature Table 2 within a single week.…”

Extending the 2% rule: the effects of heavy internal tags on stress physiology, swimming performance, and growth in brook trout

“…Mortality, tag retention, swimming performance, and physiological indicators of stress were quantified in order to determine if: (1) mortality increased with tag size; (2) tag retention decreased with tag size; (3) tags greater than 2% body weight affected the swimming performance of brook trout; and (4) if there was a relationship between tag size and physiological indicators of stress. Brook trout were selected for this study because they are representative of the kinds of fish that are now being studied with acoustic telemetry [23] due to their size, migratory behavior, and conservation interest.…”