Variable Migratory Patterns of Different Adult Rainbow Trout Life History Types in a Southwest Alaska Watershed

Meka, Julie M.; Knudsen, E. Eric; Douglas, David C.; Benter, R. Bradley

doi:10.1577/t01-166

Cited by 61 publications

(58 citation statements)

References 17 publications

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“…Radio-tracking studies of rainbow trout, brown trout, bulltrout (Salvelinus confluentus), and cutthroat trout (Oncorhynchus clarki) under natural flow regimes are consistent in their findings that individual trout tend to remain in a small home area, generally <1 km, during non-spawning periods (Clapp et al 1990;Young 1996Young , 1998Knouft and Spotila 2002;Ovidio et al 2002;Schrank et al 2003;Aarestrup et al 2005;Popoff and Neumann 2005;Hojesjo et al 2007), but that they may move longer distances (e.g., 3-63 km) during migrations to spawning habitat (Bailey et al 1978;Meyers et al 1992;Brown and Mackay 1995;Swanberg 1997;Ovidio et al 1998;Burrell et al 2000;Hilderbrand and Kershner 2000;Meka et al 2003;Arnekleiv and Roenning 2004;Bahr and Shrimpton 2004;Bettinger and Bettoli 2004;Muhlfeld and Marotz 2005;Venman and Dedual 2005). In the South Fork American River rainbow trout would be expected to spawn in spring, as high winter flows recede.…”

Section: Discussionmentioning

confidence: 62%

Distribution and movement of domestic rainbow trout, Oncorhynchus mykiss, during pulsed flows in the South Fork American River, California

Cocherell

Jones²,

Miranda³

et al. 2010

Environ Biol Fish

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We tracked the movements of ten small (SL=25.5-31.0 cm) and ten large (SL=32.0-38.5 cm) radio-tagged domestic rainbow trout (Oncorhynchus mykiss) in response to frequent pulsed releases of water in the South Fork American River (California) from July to October 2005. In week one all the small trout moved less than 1 km upstream or downstream of their release sites. Four small trout moved 1-3 km upstream or downstream of their release sites in the following 8 weeks. Seven out of ten large trout moved downstream after their release. In subsequent weeks most large trout showed smaller upstream and downstream movements, and were observed between 1 km upstream and 8 km downstream of their release sites. Our results suggest that domestic rainbow trout with SL>25 cm are not forced downstream by daily pulsed flow increases from 5 to over 40 m 3 s −1 .

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Section: Discussionmentioning

confidence: 62%

Distribution and movement of domestic rainbow trout, Oncorhynchus mykiss, during pulsed flows in the South Fork American River, California

Cocherell

Jones²,

Miranda³

et al. 2010

Environ Biol Fish

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“…Our study focused on rainbow trout larger than 450 mm fork length (FL) because we believed they would be least affected by tagging (Meka et al 2003). The fish were captured by fly fishing at the mouth of the Tongariro River and at the Fence Pool, 20 km upstream.…”

Section: Radio Taggingmentioning

confidence: 99%

“…Rainbow trout are known to migrate considerable distances (Meka et al 2003), and so fatigue is unlikely to explain the slow travel speed. The Tongariro River contains suitable spawning habitat throughout its length and we suspect that as soon as the fish enter the river they are already in the slow-down period (Heggberget et al 1996).…”

Section: Speed Of Travelmentioning

confidence: 99%

Migratory behaviour of spawning rainbow trout (Oncorhynchus mykiss) in the Tongariro River, New Zealand, after habitat alteration

Venman¹,

Dedual²

2005

New Zealand Journal of Marine and Freshwater Research

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The movements of 92 adult rainbow trout (Oncorhynchus mykiss) from Lake Taupo into the Tongariro River, New Zealand, were monitored using radio-telemetry every 3 days during the main spawning period between May and November 2003. This study repeated one previously conducted in 1995. Differences in spawning site preference and resting locations between 1995 and 2003 probably reflect differences in the nature of the river as a result of major natural floods that occurred in 1998. Average migration times were slower than in 1995 and the correlation between flow and mean daily movement was less distinct owing to the dry and settled weather during July and August, although fish did respond to freshets when they occurred. Peak movement occurred between 1600 and 2000 h NZ Standard Time with no movement occurring between midnight and 0400. Fish adjusted their movement in response to changing photoperiod. Nineteen fish were observed above the mouths of natal tributary streams for several weeks in the main river stem before entering these tributaries.

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“…The Alagnak Wild River, a conservation unit partially located within the Katmai National Park and Preserve of the National Park Service in southwest Alaska, supports a naturally reproducing population of wild rainbow trout (Oncorhynchus mykiss) which are targeted by a popular catch-and-release only sport fishery. Catchand-release angling regulations were implemented due to concerns over the health of the trout population that is subjected to intense angling pressure, with reports from local guides and anglers of high incidences of hooking scars and decreasing fish size and abundance (Meka et al, 2003). Approximately 30% of Alagnak River rainbow trout have at least one scar purportedly due to previous hooking, indicating that a substantial portion of the population is subjected to multiple angling captures (Meka, 2004).…”

Section: Introductionmentioning

confidence: 99%

Physiological response of wild rainbow trout to angling: impact of angling duration, fish size, body condition, and temperature

2005

Self Cite

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This study evaluated the immediate physiological response of wild rainbow trout to catch-and-release angling in the Alagnak River, southwest Alaska. Information was recorded on individual rainbow trout (n = 415) captured by angling including landing time and the time required to remove hooks (angling duration), the time to anesthetize fish in clove oil and withdraw blood, fish length and weight, and water temperature at capture locations. Plasma cortisol, glucose, ions (sodium, potassium, chloride), and lactate were analyzed to determine the effects of angling duration, fish size, body condition, and temperature. Levels of plasma ions did not change significantly during the observed physiological response and levels of plasma glucose were sometimes influenced by length (2000, 2001), body condition (2001), or temperature (2001). Levels of plasma cortisol and lactate in extended capture fish (angling duration greater than 2 min) were significantly higher than levels in rapid capture fish (angling duration less than 2 min). Rapid capture fish were significantly smaller than extended capture fish, reflecting that fish size influenced landing and handling times. Fish size was related to cortisol and lactate in 2002, which corresponded to the year when larger fish were captured and there were longer landing times. Body condition (i.e., weight/length regression residuals index), was significantly related to lactate in 2000 and 2001. Water temperatures were higher in 2001 (mean temperature ± S.E., 13 ± 2 • C) than in 2002 (10 ± 2 • C), and fish captured in 2001 had significantly higher cortisol and lactate concentrations than fish captured in 2002. The pattern of increase in plasma cortisol and lactate was due to the amount of time fish were angled, and the upper limit of the response was due to water temperature. The results of this study indicate the importance of minimizing the duration of angling in order to reduce the sublethal physiological disturbances in wild fish subjected to catch-and-release angling, particularly during warmer water temperatures. It is also important to note that factors such as fish size may influence both the duration of angling and subsequent physiological response.

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Variable Migratory Patterns of Different Adult Rainbow Trout Life History Types in a Southwest Alaska Watershed

Cited by 61 publications

References 17 publications

Distribution and movement of domestic rainbow trout, Oncorhynchus mykiss, during pulsed flows in the South Fork American River, California

Distribution and movement of domestic rainbow trout, Oncorhynchus mykiss, during pulsed flows in the South Fork American River, California

Migratory behaviour of spawning rainbow trout (Oncorhynchus mykiss) in the Tongariro River, New Zealand, after habitat alteration

Physiological response of wild rainbow trout to angling: impact of angling duration, fish size, body condition, and temperature

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