Effects of regulated discharge on burbot migration

Paragamian, Vaughn L.; Hardy, Ryan S.; Gunderman, Brian

doi:10.1111/j.0022-1112.2005.00670.x

Cited by 26 publications

(36 citation statements)

References 17 publications

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“…In our study, total movement distances were greater than the movement of wild burbot monitored during previous studies in the Kootenay River drainage (Paragamian 2000;Dunigan and Sinclair 2008;Paragamian and Wakkinen 2008) but were similar to the results of studies documenting riverine migrations of burbot in other systems (Breeser et al 1988). Directed movement in this study was rapid in comparison with the findings of Paragamian et al (2005), who reported average travel rates of 3.36 km/d for wild adult burbot. However, movement distances of up to 125 km have been documented in Alaskan rivers, where one-way directed movements as high as 7.8 km/d were recorded (Breeser et al 1988).…”

Section: Discussionsupporting

confidence: 81%

Movement of Lake‐Origin Burbot Reared in a Hatchery Environment and Released into a Large River Drainage

Neufeld

Cain

Jensen

et al. 2011

N American J Fish Manag

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Burbot Lota lota in Kootenay Lake and the Kootenay River of British Columbia, Idaho, and Montana (U.S. spelling: “Kootenai River”) are at risk of demographic extinction. We conducted a pilot study to evaluate poststocking dispersal and movement of hatchery‐reared, lake‐strain burbot (Moyie Lake, British Columbia) in a riverine environment to determine the potential utility of this hatchery strain for future burbot rehabilitation efforts in this system. We implanted ultrasonic tags into 30 hatchery‐reared burbot (ages 2 and 3) and released them into the Goat River, a tributary to the Kootenay River, in October 2009. Dispersal over a distance of 2 km from the Goat River release site to the Kootenay River occurred within 1–9 d after release (mean = 3.1 d; n = 28 active tags). Thereafter, 14 burbot remained in the Kootenay River for the rest of the 144‐d study period; nine of these fish were observed moving upstream from the Goat River confluence, and five were observed both upstream and downstream from the confluence. The other 14 burbot were observed in Kootenay Lake; of these fish, eight were detected in the lake for the duration of the study, and six were observed to move regularly between the lake and the river. Dispersal distances (distance between the upstream‐most and downstream‐most detections per individual) within the Kootenay River ranged from 10 to 138 km (mean = 80 km), and tagged fish were detected over a 236‐km reach (from 135 km downstream to 101 km upstream of the Goat River confluence). We also observed burbot in the vicinity of known spawning locations during the February spawning season. The observed dispersal suggests that a limited number of stocking locations may be sufficient to allow burbot to access available habitats within a few months postrelease. Our observations therefore suggest that lake‐origin, hatchery‐reared burbot may be suitable for stocking in a riverine environment.Received June 11, 2010; accepted December 4, 2010

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Section: Discussionsupporting

confidence: 81%

Movement of Lake‐Origin Burbot Reared in a Hatchery Environment and Released into a Large River Drainage

Neufeld

Cain

Jensen

et al. 2011

N American J Fish Manag

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“…Dreissenid mussels (Dreissena sp.) We suggest continued monitoring of burbot, particularly because it is of conservation concern in much of its range (Stapanian et al 2009) and it has been shown to be an excellent indicator of environmental change (e.g., Herrmann et al 1993;Tammi et al 1999;Paragamian et al 2000Paragamian et al , 2005Jackson et al 2008;Paragamian & Wakkinen 2008). Although water clarity more than doubled in nearshore areas of the eastern basin by 1993 as a result of dreissenid activity, there was no apparent temporal trend and considerable variation in water clarity during 1993-2003 (Barbiero & Tuchman 2004).…”

Section: Discussionmentioning

confidence: 93%

“…Burbot has been shown to be vulnerable to many environmental changes, particularly dams (Paragamian 2000b;Paragamian et al 2000Paragamian et al , 2005Paragamian & Wakkinen 2008), warming water temperatures (Jackson et al 2008), pollution (Herrmann et al 1993;Tammi et al 1999) and establishment of nonnative species (Berst & Spangler 1973;Christie 1973;Wells & McLain 1973;Baldwin et al 2002). Burbot has been shown to be vulnerable to many environmental changes, particularly dams (Paragamian 2000b;Paragamian et al 2000Paragamian et al , 2005Paragamian & Wakkinen 2008), warming water temperatures (Jackson et al 2008), pollution (Herrmann et al 1993;Tammi et al 1999) and establishment of nonnative species (Berst & Spangler 1973;Christie 1973;Wells & McLain 1973;Baldwin et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…However, shortly after burbot populations recovered in Lakes Michigan, Huron, and Erie they sharply declined (CWTG 2008;Stapanian et al 2008). The decline in recruitment was associated with warmer temperatures of water discharged from Libby Dam in winter (Paragamian et al , 2005Paragamian & Wakkinen 2008). For example, the burbot population in Kootenay Lake, British Columbia, Canada collapsed starting in the early 1970s, and studies since 1998 indicate that few, if any, adult burbot remain today (Spence 1999;Neufeld 2005; and references therein).…”

Section: Introductionmentioning

confidence: 99%

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Recruitment of burbot (Lota lota L.) in Lake Erie: an empirical modelling approach

Stapanian¹,

Witzel²,

Cook³

2010

Ecology of Freshwater Fish

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World-wide, many burbot Lota lota (L.) populations have been extirpated or are otherwise in need of conservation measures. By contrast, burbot made a dramatic recovery in Lake Erie during 1993-2001 but declined during 2002-2007, due in part to a sharp decrease in recruitment. We used Akaike's Information Criterion to evaluate 129 linear regression models that included all combinations of one to seven ecological indices as predictors of burbot recruitment. Two models were substantially supported by the data: (i) the number of days in which water temperatures were within optimal ranges for burbot spawning and development combined with biomass of yearling and older (YAO) yellow perch Perca flavescens (Mitchill); and (ii) biomass of YAO yellow perch. Warmer winter water temperatures and increases in yellow perch biomass were associated with decreases in burbot recruitment. Continued warm winter water temperatures could result in declines in burbot recruitment, particularly in the southern part of the species' range.

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“…environment, thermal anomalies and significant overfishing, a regular decrease in the population of burbot within the entire area of its appearance has been observed (Paragamian et al 2005Hardy et al 2008). In Poland, this species is included in the Red list of freshwater ichthyofauna of Poland (Witkowski et al 1999).…”

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confidence: 98%

Food selection of burbot (Lota lota L.) larvae reared in illuminated net cages in mesotrophic Lake Maróz (north-eastern Poland)

et al. 2013

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Feeding and food selection of burbot (Lota lota L.) larvae reared in illuminated cages were studied. The experiment was carried out in mesotrophic Lake Maróz, in northeastern Poland, for 6 weeks in two successive years. The initial stocking density was 1,250 larvae (20 DPH) per cage. Food selection according to the zooplankton groups (Rotifera, Cladocera and Copepoda) and length classes was expressed by the Strauss linear selectivity index (L). Zooplankton species composition in the lake was similar in the two seasons of the study and organisms shorter than 0.5 mm prevailed in the plankton. The mean number of prey found in burbot alimentary tracts increased from about 40 up to over 200 during the course of the study. A very large inter-individual variation in the amount of food organisms consumed by fish was noted. Analysis of the values of the Strauss food selectivity index shows that at the beginning of the first year of the experiment, burbot larvae preferred copepods, most numerous in the environment at that time; later, fish tended to select cladocerans. In the second year of the study, fish more often ate copepods, irrespective of their quantities in the environment. During the whole study, reared burbot larvae did not eat rotifers, even when they were numerous in cages. Similarly to the rotifers, the smallest planktonic organisms, measuring up to 0.5 mm in length, were typically neglected by fish, while the 0.6-1.0 mm group was most frequently selected. There were also considerable individual differences between particular burbot specimens in their food preferences.

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Effects of regulated discharge on burbot migration

Cited by 26 publications

References 17 publications

Movement of Lake‐Origin Burbot Reared in a Hatchery Environment and Released into a Large River Drainage

Movement of Lake‐Origin Burbot Reared in a Hatchery Environment and Released into a Large River Drainage

Recruitment of burbot (Lota lota L.) in Lake Erie: an empirical modelling approach

Food selection of burbot (Lota lota L.) larvae reared in illuminated net cages in mesotrophic Lake Maróz (north-eastern Poland)

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