Laboratory protocol to calibrate sea lamprey (Petromyzon marinus L.) EMG signal output with swimming

Almeida, Pedro R.; Póvoa, I.; Quintella, Bernardo R.

doi:10.1007/978-1-4020-6237-7_20

Cited by 6 publications

(20 citation statements)

References 24 publications

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“…Application of radio EMG tag in previous studies on European sea bass (Lembo et al 2007) and other species (Booth, McKinley, Økland & Sisak 1997;Geist, Abernethy, Blanton & Cullinan 2000;Thorstad, Økland, Koed & McKinley 2000) involved a calibration procedure before the animal was released to the wild to describe their free swimming behaviour. The relationship between EMG signals and swim speed during the calibration trials, as reported in literature (Geist et al 2000;Thorstad et al 2000;Chandroo et al 2005), followed a linear pattern with a high variability among the EMG data, especially at the highest velocity steps close to U crit (Almeida et al 2007;Lembo et al 2007). Furthermore, this study found considerably less variability among EMG acoustic transmitters than previously reported with radio EMG transmitters (Lembo et al 2007).…”

Section: Discussionsupporting

confidence: 64%

“…Again, variability seen with the radio EMG transmitter was not evident using the acoustic transmitter (Thorstad et al 2000;Lembo et al 2007). This result is strongly supported because all the other possible sources that could contribute to variable EMG responses, such as the size and type of the electrodes (McKinley & Power 1992), the placement of the electrodes (Beddow & McKinley 1999), the swim trial protocol (Geist, Brown, Lepla & Chandler 2002), the duration of the calibration trials, the sex and maturity of fish (Almeida et al 2007), the rearing condition and the physiological state of fish (Kieffer 2000;McFarlane et al 2004), were minimised during this study.…”

Section: -Cmentioning

confidence: 67%

“…Indeed, the number of signals decoded in the two sampling minutes ranged from a minimum of 28 (tag B at 0.1 m s )1 ) to a maximum of 147 (tag A at 1.0 m s )1 ). The strong relationship between EMG signal and the activity of fish during the critical swimming speed trial demonstrated that the acoustic EMG tags could be used as an accurate indicator of free swimming activity (Almeida, Po´voa & Quintella 2007).…”

Section: Discussionmentioning

confidence: 99%

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Introduction of a new physiological acoustic electromyogram transmitter

Lembo¹,

Carbonara²,

Scolamacchia³

et al. 2008

Fisheries Management Eco

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Electromyogram (EMG) radio transmitters have proven to be a useful tool to monitor activity levels in free swimming fish. Unfortunately, the availability of the EMG transmitter in only radio mode limited its use to the freshwater environment. Applications in the marine environment are numerous and include monitoring activity levels in both wild and cultured finfish. This study presents preliminary data from trials examining activity levels in free swimming sea bass, Dicentrarchus labrax, L., using an acoustic EMG transmitter. Three adult sea bass were surgically implanted with the newly created prototype EMG transmitters. Signals from the transmitter were calibrated to swimming speed using a Blazˇka-style chamber. Swimming trials showed a high correlation between EMG signal and swimming velocity (r 2 = 0.978) and were described using a sigmoid model. No significant differences (P < 0.05) were found among the four swimming trials conducted on the same fish or among the trials of the three different fish, indicating minimum variation from the prototypes tested. K E Y W O R D S : acoustic transmitters, critical swimming speed protocol, electromyogram, physiological telemetry, sea bass.

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Section: Discussionsupporting

confidence: 64%

Section: -Cmentioning

confidence: 67%

Section: Discussionmentioning

confidence: 99%

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Introduction of a new physiological acoustic electromyogram transmitter

Lembo¹,

Carbonara²,

Scolamacchia³

et al. 2008

Fisheries Management Eco

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“…Transmitter calibration and experimental animals Almeida et al (2007) pointed out the necessity of establishing a protocol to calibrate sea lamprey muscle contraction with swimming activity; they found that it was not possible to successfully calibrate the CEMG transmitter output with swimming speed, and considered that the calibrated EMG signal corresponded to an effort index. Nevertheless, in the opinion of Almeida et al (2007), the calibrated swimming effort (SE) also gives reliable information on the activity patterns of sea lampreys and permits the comparison of data between individuals.…”

Section: Methodsmentioning

confidence: 99%

“…Quintella et al (2004) used EMG transmitters developed by Lotek Wireless to study the behavioural patterns of sea lamprey spawning migration through difficult passage areas; however, that study documented only relative activity levels. A study by Almeida et al (2007) tried to develop a protocol to calibrate the CEMG transmitter output with swimming speed; this procedure was already successfully performed for several other species having a sub-carangiform type of locomotion (see review in Cooke et al, 2004). Due to some particularities of the anguilliform swimming motion and unique behaviour of the lamprey, it was not possible to determine the swimming speed with the CEMG transmitter output.…”

Section: Introductionmentioning

confidence: 99%

Swimming behaviour of upriver migrating sea lamprey assessed by electromyogram telemetry

Quintella

Póvoa

Almeida

2009

Journal of Applied Ichthyology

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The main subject of this study was the swimming behaviour of upriver migrating sea lamprey, Petromyzon marinus, with particular focus on identification of their swim strategies to overcome areas of difficult passage. A biotelemetry technique (electromyogram telemetry) was used to register muscle activity of the tagged animals. In the 2005 spawning season, five adult sea lampreys were surgically tagged and released in the field. Before release, electromyogram (EMG) records were calibrated with the P. marinus swimming speed in a swim tunnel. Differences between ground speed and swimming speed in the wild suggest that the calibrated CEMG (coded electromyogram) transmitter output corresponds to an activity index, and cannot be properly related to actual swimming speed. This study notes the need to confirm the laboratory calibration curves, to ascertain their use in determining swimming speed of tagged fish in the wild. In 2006, in order to confirm the field results seven adult sea lampreys were tagged, calibrated in the laboratory and released in a 30-m long experimental outdoor canal. The results were similar: observed swimming speed was generally higher when compared with the swimming speed obtained with the EMG signal. In the river, when swimming through slow-flow stretches, sea lampreys maintained a constant pattern of activity, attaining an average ground speed of 0.76 BL s )1 (2.5 km h)1

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Cumulative impacts of habitat fragmentation and the environmental factors affecting upstream migration in the threatened sea lamprey, Petromyzon marinus

Davies

Britton

Nunn

et al. 2021

Aquatic Conservation

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River ecosystems are often fragmented by artificial structures, such as weirs. For anadromous species, these structures can impede access to upstream spawning sites and ultimately lead to severe population declines. This study focused on the freshwater spawning migration of the sea lamprey, Petromyzon marinus, an anadromous species threatened by habitat fragmentation across its native range. To quantify the cumulative impacts of multiple weirs on upstream‐migrating adults, and to explore the environmental factors affecting migratory movements, passive acoustic telemetry was applied to 56 individuals during their spawning migration in the heavily fragmented River Severn basin, UK. While 89% of tagged sea lamprey passed the first weir upstream of the release site on the main river, only 4% passed the fifth weir. For 85% of migrants, the upstream extent of migration was immediately downstream of a weir. Individuals that passed weirs upstream of the release site (n = 50) took 21.6 ± 2.8 days to reach their most upstream location, experiencing cumulative passage times at weirs of 15.7 ± 2.8 days; these delays constituted a median of 84% of total upstream movement times. Multistate models showed that the weir passage rates of sea lamprey in tidal and non‐tidal areas increased significantly when downstream river level and discharge were elevated. Upstream‐to‐downstream changes in direction were frequent downstream of weirs, but rare in unobstructed river sections. The results provided evidence for a cumulative effect of multiple weirs on sea lamprey movements, substantially delaying upstream migrants and limiting their spawning to atypical habitat. The results also demonstrated the crucial roles of high tides and elevated discharge events in enabling weir passage. Although the Severn Estuary features conservation designations for sea lamprey, this study reveals that barriers are inhibiting their upstream migration, a problem that should be addressed to assist sea lamprey conservation.

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Laboratory protocol to calibrate sea lamprey (Petromyzon marinus L.) EMG signal output with swimming

Cited by 6 publications

References 24 publications

Introduction of a new physiological acoustic electromyogram transmitter

Introduction of a new physiological acoustic electromyogram transmitter

Swimming behaviour of upriver migrating sea lamprey assessed by electromyogram telemetry

Cumulative impacts of habitat fragmentation and the environmental factors affecting upstream migration in the threatened sea lamprey, Petromyzon marinus

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