Behaviour of gill-net and rod-captured Atlantic salmon (Salmo salar L.) during upstream migration and following radio tagging

Mäkinen, T. S.; Niemelä, Eero; Moen, Kjell; Lindström, Reijo

doi:10.1016/s0165-7836(99)00107-1

Cited by 78 publications

(79 citation statements)

References 25 publications

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“…The 17 dorados released at Turvo Forest Park that were never recorded may have moved out of the study area, as corroborated by the capture of a fish downstream of the park, whose tag was returned by fishers. The movement to downstream areas after tagging could be a result of stress caused by handling and tagging (Mäkinen et al 2000, Thorstad et al 2001 or it may simply be that these fish inhabit a large home range that extends downstream from the tagging site. The fact that these fish were not detected by any receivers or tracking sessions could be due to 3 primary reasons: (1) problems in the fixed stations or in mobile tracking, (2) fish were captured by fishers and not reported, or (3) transmitter failure.…”

Section: Migratory Biology Of Doradosmentioning

confidence: 99%

Use of radiotelemetry to track threatened dorados Salminus brasiliensis in the upper Uruguay River, Brazil

Hahn¹,

Agostinho²,

English³

et al. 2011

Endang. Species. Res.

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Little is known about the seasonal movements of fish that inhabit large rivers in South America, which makes it difficult to identify potential threats to fish populations associated with the proliferation of hydropower developments. Dorados Salminus brasiliensis (Characiformes) are large riverine piscivores that are targeted by recreational and commercial fishers and are considered regionally 'vulnerable' in Brazil due to overfishing, pollution, and habitat fragmentation. Here, we used radio telemetry to study the seasonal movements of dorados in the upper Uruguay River, Brazil, to provide the first information on large-scale migratory biology and to inform management and conservation actions. From November 2001 to July 2003, 73 dorados were radio-tracked using aerial surveys and 7 fixed radio telemetry stations installed in a section of the upper Uruguay River covering ~400 km. Despite use of an extensive radio telemetry array and aerial tracking, nearly 40% of fish tagged at the downstream site were never detected, suggesting unreported harvest, post-release mortality, or migration to tributaries or downstream reaches that extended beyond the tracking area, emphasizing the challenges of working in such a large study system in jurisdictions where research capacity and funding are limited. Nonetheless, this study yielded the first data on the migratory biology of dorados and revealed that a segment of the population is quite mobile and thus could be negatively impacted by river fragmentation, suggesting the need for management strategies that maintain connectivity (e.g. fish passage facilities).

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Section: Migratory Biology Of Doradosmentioning

confidence: 99%

Use of radiotelemetry to track threatened dorados Salminus brasiliensis in the upper Uruguay River, Brazil

Hahn¹,

Agostinho²,

English³

et al. 2011

Endang. Species. Res.

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“…However, mortality may increase when fish are angled at warmer water temperatures (Dotson, 1982;Titus and Vanicek, 1988;Wilkie et al, 1996). There are also sublethal effects that may be induced by physiological changes provoked by a stress event including changes in reproductive behavior or function (Campbell et al, 1992;Kieffer et al, 1995;, disease resistance (Pickering and Pottinger, 1989), growth suppression or decrease in appetite (Gregory and Wood, 1999), post-release predation (Cooke and Philipp, 2004), and other behavioral effects such as changes in social hierarchies and migratory behavior (Lewynsky and Bjornn, 1987;Mäkinen et al, 2000). Physiological disruptions from stress events can be considered cumulative (Barton et al, 1986); therefore, it is possible that fish caught and released several times during a fishing season may be more vulnerable to these types of sublethal effects.…”

Section: Introductionmentioning

confidence: 99%

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

2005

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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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“…Mean 'maximum sustainable swimming speed' and 'burst swimming speed' for roach, dace and chub at 8°C (based on data from Clough and Turnpenny, 2001) speeds at 8°C are shown here as this was the coldest water temperature at which swimming speed experiments were conducted. The availability of refuges is a crucial habitat factor for fish in river channels (Makinen et al, 2000). The importance of refugia to fish in lotic environments arises because they serve as protection from high current velocities (Langler and Smith, 2001).…”

Section: Fish Swimming Speeds Migration and Refuge Usementioning

confidence: 99%

“…Although some fish tracking has been carried out (e.g. Makinen et al, 2000;Armstrong et al, 2001) there is little information available relating to fish behaviour during high flows in rivers. Several studies have shown that some fish species use interstitial positions as refuges during lower flows (e.g.…”

Section: Fish Swimming Speeds Migration and Refuge Usementioning

confidence: 99%

Hydraulic modelling of fish habitat in urban rivers during high flows

Booker

2002

Hydrological Processes

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Abstract:In urban rivers, flow regime and channel morphology are the drivers of physical habitat quality for aquatic species. Peak discharges are increased at high flows as a result of impermeable catchments and channel engineering for flood protection schemes. Hazardous conditions and flashy hydrographs mean that measurement of velocities at high flows is a difficult task. This research uses a three-dimensional computational fluid dynamics (3D-CFD) model to simulate hydraulic patterns in two urban river channels. A 3D-CFD code, called SSIIM, was used to simulate hydraulic conditions in two engineered river reaches of the River Tame, Birmingham, UK. These two sites represent channels with different levels of engineering. Models were calibrated and tested using field measurements. Results show that modelled water surface levels and velocity profiles are well simulated. Calibrated roughness heights are compared with those derived from field measurement of sediment size. Numerical experiments are used to assess the relationship between grid resolution in the vertical dimension and the form of the modelled velocity profiles. Biologists have used laboratory experiments to determine maximum sustainable swimming speeds (MSSS) of fish, often in order to assess what level of a particular pollutant may be tolerable. In this work, simulations of high-flow hydraulic patterns are used to compare velocity patterns with fish MSSS. Results show that when the water levels rise to fill the first channel of the two-stage channels at the sites, which occurred 16 times in 2000, MSSS are surpassed in the majority of available habitat, suggesting that excessive velocities at high flows are one factor that limits fish habitat. A comparison between the two reaches shows that there is less available habitat in the more modified reach. Conclusions suggest that an approach that integrates water quality issues and physical channel characteristics must be taken in river rehabilitation schemes, as improvements to water quality alone may not be sufficient to improve habitat quality to the desired level.

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Behaviour of gill-net and rod-captured Atlantic salmon (Salmo salar L.) during upstream migration and following radio tagging

Cited by 78 publications

References 25 publications

Use of radiotelemetry to track threatened dorados Salminus brasiliensis in the upper Uruguay River, Brazil

Use of radiotelemetry to track threatened dorados Salminus brasiliensis in the upper Uruguay River, Brazil

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

Hydraulic modelling of fish habitat in urban rivers during high flows

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