The Need for Reporting Rationale and Detailed Methods in Studies that Surgically Implant Fish with Electronic Tracking Devices

Clemens, Benjamin J.; Matley, Jordan K.; Klinard, Natalie V.; Lennox, Robert J.; Sortland, Lene K.; Cooke, Steven J.

doi:10.1002/fsh.10963

Cited by 6 publications

(1 citation statement)

References 69 publications

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“…Lamprey were transferred from the buckets to instream holding containers (i.e., repurposed, plastic clothes hampers [0.09 m 3 ] with an open-weave design to allow continuous streamflow through them; see Figure 2 in Clemens et al 2023) outside of the shocking area. The lamprey were held for 2-23 h before being tagged.…”

Section: Impact Statementmentioning

confidence: 99%

Backpack electrofishing can be used to collect adult lamprey

Litts

Clemens

Vonderohe

et al. 2023

N American J Fish Manag

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We describe a new method to collect adult Pacific Lamprey Entosphenus tridentatus in wadable streams using a backpack electrofisher with pulsed, direct current at 300 V, 50 Hz, and 4 milliseconds pulse width in a 150 m2 reach of Eel Creek, a small dunal stream in Oregon (USA). The 150 m2 collection reach was predominately coarse substrate (20% boulders, 60% cobble, 15% pebbles, and 5% sand), whereas the substrate in the remainder of the 4.2 kilometer long Eel Creek is predominately sand and silt. The specific conductivity of the stream was 83.7 μS X cm‐1 and water temperatures ranged from 8.9 to 17.2oC, with water depth ≤1.2 m. One person electrofished while gradually moving downstream, and up to 6 netters stationed up to 6 m away covered most of the channel width and caught the lamprey as they emerged from the substrate and floated or swam downstream. We collected 118 adult lamprey (mean: 29.5 lamprey X hr‐1; range: 4 – 80 lamprey X hr‐1) measuring 504 ±54 mm TL over eight collection events during 2018 – 2021. A total of 117 of 118 of these fish were subsequently anesthetized, handled, tagged, and released within a few hours with no mortalities, external injuries, or abnormal behavior. One lamprey (0.8% of all collected lamprey) that was collected and tagged, died during a second collection 35 d later. The estimated peak power output was 267.7 μW X cm‐1 and the estimated mean body volume of the lamprey was 378 ±68 cm3. The results suggest that backpack electrofishing I a useful method for collecting adult lamprey in streams with favorable habitat that concentrates them.

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Section: Impact Statementmentioning

confidence: 99%

Backpack electrofishing can be used to collect adult lamprey

Litts

Clemens

Vonderohe

et al. 2023

N American J Fish Manag

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Handling effects on dispersal of PIT‐tagged Flannelmouth Sucker

Bonjour,

Gido,

McKinstry

2024

N American J Fish Manag

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ObjectiveHandling and tagging migrating fish might alter their behavior, limiting inference from mark–recapture studies. Posthandling flight of tributary spawning Flannelmouth Sucker Catostomus latipinnis was previously identified in Coal Creek in the upper Colorado River basin. Our objective was to determine if similar issues were present at McElmo Creek in the San Juan River basin.MethodsWe compared emigration timing of Flannelmouth Sucker that had been handled and tagged with passive integrated transponder tags during their tributary spawning run to individuals tagged in previous years and detected both entering and exiting the tributary. Linear mixed‐effects models were used to examine intrinsic and extrinsic factors contributing to exit timing.ResultSex and tagging year were associated with emigration timing, but handling did not result in posthandling flight from McElmo Creek. Females exited the tributary ~3 days before males, and larger fish emigrated earlier than smaller adults.ConclusionDifferences in capture technique and timing, available spawning habitat, and fish motivation across river systems may contribute to differences in posthandling emigration of tributary spawning Flannelmouth Sucker.

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The effect of trapping on the migration and survival of Atlantic salmon smolts

Sortland,

Jepsen,

Kennedy

et al. 2024

River Research & Apps

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Electronic tags are often used to track the freshwater‐marine migrations of smolts, where smolts are captured for tagging pre‐migration (e.g., via electrofishing) or during‐migration (e.g., via traps). Pre‐migration capture allows smolts to initiate and complete their downstream migration unhindered, but risks smolt loss before the migration commences. The contrary is the case for during‐migration trap‐caught smolts, but trapping smolts temporarily halts their seaward journey which may negatively impact their progress. This study investigated the effect of trapping on the behaviour and survival of migrating Atlantic salmon (Salmo Salar) smolts using acoustic telemetry. We compared the movements and survival of smolts tagged before the smolt run captured by electrofishing (“comparator”) with smolts trapped and tagged during the smolt run (“trapped”). A total of 478 smolts were tagged and released in River Skjern (2020 and 2022), Denmark, and 82 smolts in River Ballycastle (2022), Northern Ireland, and their seaward movements were monitored using acoustic receivers deployed in the river, fjord, and coastal area. In River Skjern in 2022, comparator smolts migrated earlier than trapped smolts, likely because these constituted more of the larger‐sized, earlier migrating individuals. We found no differences in descent trajectories, diel patterns, progression rates, or survival between trapped smolts and comparator smolts in any of the rivers or study years. Thus, our results support the use of during‐migration trapping as a low‐impact method to capture smolts for telemetry studies, with trapped samples (if held <24 h) yielding comparable results in terms of behaviour and survival with non‐delayed pre‐migration tagged fish.

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The Need for Reporting Rationale and Detailed Methods in Studies that Surgically Implant Fish with Electronic Tracking Devices

Cited by 6 publications

References 69 publications

Backpack electrofishing can be used to collect adult lamprey

Backpack electrofishing can be used to collect adult lamprey

Handling effects on dispersal of PIT‐tagged Flannelmouth Sucker

The effect of trapping on the migration and survival of Atlantic salmon smolts

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