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Formal report series, containing results of research and monitoring carried out by Marine Scotland Science

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UK Open Government Licence (OGL)

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Measurement of Hearing in the Atlantic salmon (Salmo salar) using Auditory Evoked Potentials, and effects of Pile Driving Playback on salmon Behaviour and Physiology

Scottish Marine and Freshwater Science Vol 7 No 11

This report describes carefully controlled laboratory based experiments conducted to consider the potential impact of pile driving noise on Atlantic salmon behaviour and physiology. It is divided into two sections - Part 1: Audiometry, using Auditory Evoked Potentials (AEP) to Determine Hearing Thresholds of a Number of Cohorts of Salmon and Part 2: The Impact of Pile-Driving Playback on the Behaviour and Physiology of Atlantic salmon (Salmo salar).

doi: 
10.7489/1701-1
Citation: 
Harding, H., Bruintjes, R., Radford, A.N. and Simpson, S.D. (2016) Measurement of Hearing in the Atlantic salmon (Salmo salar) using Auditory Evoked Potentials, and effects of Pile Driving Playback on salmon Behaviour and Physiology. Scottish Marine and Freshwater Science Vol 7 No 11: 47pp. DOI: 10.7489/1701-1

Dataset Info

These fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
FieldValue
Publisher
Modified Date
2017-05-09
Release Date
2016-05-09
Identifier
02dafbe7-93e1-437e-820b-313aedd2aa96
Spatial / Geographical Coverage Location
Scotland
Temporal Coverage
Friday, March 1, 2013 - 00:00 to Sunday, March 31, 2013 - 00:00
License
UK Open Government Licence (OGL)
Author
Harry Harding
Data Dictionary

Part 1: Three groups of fish were tested: 1) Wild Post-Smolt: Ten post-smolt collected in traps in the River Tay as seaward migrating smolt and held for one year in a 1.5 m diameter circular tank indoors (LT1 Tank 3). Standard Length (SL) 273.5 ± 11.3 mm (mean ± SE) and Fork Length (FL) 288.7 ± 12.1 mm. 2) Captive Post-Smolt: Ten post-smolt reared since hatching in captivity from wild stock eggs and held outdoors in a 1.5 m diameter circular tank outdoors (Outdoor Tank 16). SL 294.0 ± 11.4 mm, FL 312.0 ± 11.4 mm. 3) Captive Adults: Ten adult salmon reared since hatching in captivity from wild stock eggs and held in a 15 m long tank (Dumbell). SL 379.0 ± 15.0 mm, FL 401.5 ± 15.7 mm. To assess hearing sensitivity of fish from the three test cohorts, the Auditory-Evoked Potentials (AEP) technique was used, which is a non-invasive electrophysiological measure of the synchronized brain response to auditory stimuli. Part 2: 1. Behavioural Experiment - 40 adult Atlantic salmon raised in captivity at the Marine Laboratory following collection as smolts in the wild (trials 1–16) or from a farm (Landcatch Ltd., Ormsary, trials 17-20). The salmon were housed in two outdoor tanks (tanks 2 and 20, respectively). Wet weight was 3595.10 g ± 151.67 (mean ± SE); TL (Total length) 677.63 mm ± 9.04. The outdoor tanks received ambient lighting conditions during the experimental period (May – June). 2. Physiological Experiment - 26 marine-phase salmon that had been fertilised and hatched at the Marine Laboratory from eggs and milt from broodstock at Aultbea, were housed in one indoor tank (tank room two) for the duration of the experiment (June-September). The indoor tank was lit by low intensity green lamps. Wet Weight was 1319.48 g ± 62.82; TL 480.17 mm ± 5.37. All holding tanks received running seawater with a constant temperature of 10?C, with aerators maintaining dissolved oxygen levels. Acoustic conditions in the holding tanks were measured using a calibrated omnidirectional HTI-96-MIN hydrophone (frequency response = 2–30,000 Hz, sensitivity = -165 dB re 1V/µPa), positioned 10cm above the bottom of the tank (water depth: 1 m), and a Sony PCM-M10 24-bit recorder (96 kHz sampling rate). Root Mean Square (RMS) noise levels, analysed using SASLab Pro v4.5.2 (Avisoft Bioacoustics, Berlin) were 134.54 (Outdoor tank two) and 130.77 (Indoor tank 2) dB re 1µPa (full spectra, 1 sec averaging, 15 sec recording).

Contact Name
Marine Scotland Science
Contact Email
Public Access Level
Public