Spawning migration of radio tagged landlocked Arctic Charr, Salvelinus alpinus L. in Ennerdale Lake, the English Lake District

McCubbing, D.J.F.; Bayliss, B.D.; Locke, V.

doi:10.1007/978-94-011-5090-3_20

Cited by 6 publications

(12 citation statements)

References 7 publications

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“…The use of laboratory or mesocosm environments enables easy recording of tag loss, but may not be representative of the natural conditions, particularly in terms of snagging and fouling risks, which may increase the loss rate of external tags under natural compared to laboratory conditions [e.g. 4,11,25]. In the field, retention of electronic tags is most often demonstrated by recapture, which can be habitat-and sampling efficiency dependent.…”

Section: Tag Retentionmentioning

confidence: 99%

“…However, it can be difficult to do this in such a way that premature tag losses do not occur before appropriate data have been gathered and while ensuring that such tag losses can be identified. McCubbing et al [25] used a single absorbable suture through the dorsal muscle to attach radio tags to pre-spawning adults of a threatened Arctic char (Salvelinus alpinus) population to ensure that tag attachment was temporary, but found in preliminary observations that upon release in the stream, fish sought refuge under boulders and most tags were rapidly shed. The premature shedding (determined by locating and recovering shed tags during mobile tracking) was reduced by releasing fish in the lake from which they had migrated, several hundred meters downstream, but still a 25 % (5/20 fish) tag loss occurred from within a few days after tagging.…”

Section: Tag Retentionmentioning

confidence: 99%

“…The premature shedding (determined by locating and recovering shed tags during mobile tracking) was reduced by releasing fish in the lake from which they had migrated, several hundred meters downstream, but still a 25 % (5/20 fish) tag loss occurred from within a few days after tagging. More conventional, and more invasive, dorsal musculature tag attachments (body-tight, by use of stainless steel wires) in salmonids such as adult Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) in rivers have much higher retention rates [26][27][28] than those observed for char by McCubbing et al [25].…”

Section: Tag Retentionmentioning

confidence: 99%

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The use of external electronic tags on fish: an evaluation of tag retention and tagging effects

et al. 2015

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External tagging of fish with electronic tags has been used for decades for a wide range of marine and freshwater species. In the early years of fish telemetry research, it was the most commonly used attachment method, but later internal implants became preferred. Recently, the number of telemetry studies using external tagging has increased, especially with the development of archival tags (data storage tags, DSTs), pop-up satellite archival tags (PSATs) and other environment-sensing tags. Scientific evaluations of the tagging method are rather scarce for most species. We identified 89 publications, reporting effects of external tagging for 80 different fish species, which constitute the main basis for this review. External attachment holds certain benefits compared to other tagging methods, for example, speed of application, and it may be the only option for fishes with a body shape unsuitable for surgical implantation, or when using tags with sensors recording the external environment. The most commonly reported problems with external tags are tissue damage, premature tag loss, and decreased swimming capacity, but the effects are highly context dependent and species specific. Reduced growth and survival have also been recorded, but direct mortality caused by external tagging seems rare. Most of the studies reviewed evaluate tag retention, survival, and tissue reactions. There is a general need for more research on the effects of external tagging of fish with electronic tags, but particularly there are few studies on predation risk, social interactions, and studies distinguishing capture and handling effects from tagging effects. For PSATs, especially those that are large relative to fish size, there are particular problems with a high proportion of premature tag losses, reduced swimming capacity, and likely increased predation, but there remains a paucity of tag effect studies related to the use of PSATs. Before embarking on a field study employing external tagging with electronic tags, we recommend the use of appropriate pilot studies, controlled where possible, to quantify potential impacts of tagging.

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Section: Tag Retentionmentioning

confidence: 99%

Section: Tag Retentionmentioning

confidence: 99%

Section: Tag Retentionmentioning

confidence: 99%

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The use of external electronic tags on fish: an evaluation of tag retention and tagging effects

et al. 2015

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“…2007), only 10 populations are known to spawn in rivers, two of which are now extinct (Walker 2007). Two of the eight English populations (Frost 1965; McCubbing et al. 1998) and one of the four Welsh populations (McCarthy 2007) have been found to spawn in rivers.…”

Section: Introductionmentioning

confidence: 99%

“…Spawning sites have been located for a number of river spawning anadromous Arctic charr populations in Norway and North America (Nordeng 1961; Moore 1975; Dempson & Green 1985; Cunjak et al. 1986) and for nonanadromous river spawning charr in Britain (Frost 1965; McCubbing et al. 1998; Walker 2007).…”

Section: Introductionmentioning

confidence: 99%

Littoral spawning habitats of three southern Arctic charr (Salvelinus alpinus L.) populations

Low

Igoe

Davenport

et al. 2011

Ecology of Freshwater Fish

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Arctic charr populations in southern latitudes are nonmigratory, with all life‐stages limited to freshwater lakes and in‐ or out‐flowing tributaries. Although many of these populations are reported to also spawn in lake littorals, little is known about the physical characteristics of putative spawning grounds. A total of 23 discrete spawning sites within three Irish lakes were located by fyke netting of spawning adults and snorkelling in littoral habitats. Spawning sites were found to be long, narrow strips running parallel to the shore at a maximum depth of 124 cm. Spawning sites were limited to areas of coarse mineral substrate with an adequate (c. 8 cm) depth of clean interstitial spaces. In individual lakes, combined areas of spawning sites made up 0.4–0.7% of available littoral. Egg densities varied considerably between sites (33–900·eggs m−2) and were significantly correlated with gradient and width of spawning sites. No evidence of redd digging was found. The shallow, localised and restricted nature of spawning grounds makes such populations vulnerable to anthropogenically induced postoviposition changes in surface water level, eutrophication processes such as increased lake sedimentation and elevated nutrient status.

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Behavior and Reproductive Ecology of the Sicklefin Redhorse: An Imperiled Southern Appalachian Mountain Fish

Favrot

Kwak

2018

Trans Am Fish Soc

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Many nongame fishes are poorly understood but are essential to maintaining healthy aquatic ecosystems globally. The undescribed Sicklefin Redhorse Moxostoma sp. is a rare, imperiled, nongame fish endemic to two southern Appalachian Mountain river basins. Little is known of its behavior and ecology, but this information is urgently needed for conservation planning. We assessed the spatial and temporal bounds of spawning migration, quantified seasonal weekly movement patterns, and characterized seasonal and spawning behavior using radiotelemetry and weir sampling in the Hiwassee River basin, North Carolina–Georgia, during 2006 and 2007. Hiwassee River tributaries were occupied predominantly during the fish's spawning season, lower reaches of the tributaries and the Hiwassee River were primarily occupied during the postspawning season (i.e., summer and fall), and lower lotic reaches of Hiwassee River (upstream from Hiwassee Lake) were occupied during winter. Adults occupied Hiwassee Lake only as a movement corridor during spawning migrations. Both sexes conducted upstream spawning migrations simultaneously, but males occupied spawning tributaries longer than females. Sicklefin Redhorse exhibited interannual spawning‐area and tributary fidelity. Cold water temperatures associated with hypolimnetic releases from reservoirs and meteorological conditions influenced spawning migration distance and timing. During 2007, decreased discharges during the spawning season were associated with decreases in migration distance and spawning tributary occupancy duration. Foraging was the dominant behavior observed annually, followed by reproductive behaviors (courting and spawning) during the spawning season. No agonistic reproductive behavior was observed, but females exhibited a repetitious postspawning digging behavior that may be unique in the family Catostomidae. Our findings suggest that protection and restoration of river continuity, natural flow regimes, seasonally appropriate water temperatures, and geographic range expansion are critical components to include in Sicklefin Redhorse conservation planning. Fisheries and ecosystem managers can use our findings to justify sensitive management decisions that conserve and restore critical streams and rivers occupied by this imperiled species.

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Spawning migration of radio tagged landlocked Arctic Charr, Salvelinus alpinus L. in Ennerdale Lake, the English Lake District

Cited by 6 publications

References 7 publications

The use of external electronic tags on fish: an evaluation of tag retention and tagging effects

The use of external electronic tags on fish: an evaluation of tag retention and tagging effects

Littoral spawning habitats of three southern Arctic charr (Salvelinus alpinus L.) populations

Behavior and Reproductive Ecology of the Sicklefin Redhorse: An Imperiled Southern Appalachian Mountain Fish

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