Farmed Salmon Show No Pathological Alterations When Exposed to Acoustic Treatment for Sea Lice Infestation

Special issue Ocean Noise: From Science to Management.-- 20 pages, 22 figures, 1 table, supplementary materials www.mdpi.com/article/10.3390/jmse9101114/s1 The use of bioacoustic methods to address sea lice infestation in salmonid farming is a promising innovative method but implies an exposure to s...

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Bibliographic Details
Published in:Journal of Marine Science and Engineering
Main Authors: Solé, Marta, Constenla Matalobos, María, Padrós, Francesc, Lombarte, Antoni, Fortuño Alós, José Manuel, Van der Schaar, Mike, André, Michel
Other Authors: Seasel Solutions, Agencia Estatal de Investigación (España)
Format: Article in Journal/Newspaper
Language:English
Published: Multidisciplinary Digital Publishing Institute 2021
Subjects:
Salmon
Salmo salar
Acoustic trauma
Scanning electron microcopy
Otolith organ
Lateral line
Histopathology
Vaterite
Neuromast
Brattvåg
Norway
Online Access:http://hdl.handle.net/10261/254729
https://doi.org/10.3390/jmse9101114
https://doi.org/10.13039/501100011033
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Summary:Special issue Ocean Noise: From Science to Management.-- 20 pages, 22 figures, 1 table, supplementary materials www.mdpi.com/article/10.3390/jmse9101114/s1 The use of bioacoustic methods to address sea lice infestation in salmonid farming is a promising innovative method but implies an exposure to sound that could affect the fish. An assessment of the effects of these techniques related to the salmon’s welfare is presented here. The fish were repeatedly exposed to 350 Hz and 500 Hz tones in three- to four-hour exposure sessions, reaching received sound pressure levels of 140 to 150 dB re 1 µPa2, with the goal of reaching total sound exposure levels above 190 dB re 1 µPa2 s. Gross pathology and histopathological analysis performed on exposed salmons’ organs did not reveal any lesions that could be associated to sound exposure. The analysis of their otoliths through electron microscopy imaging confirmed that the sound dose that was used to impair the lice had no effects on the fish auditory organs Funding for this project was provided by SEASEL SOLUTIONS AS. Project: An acoustic and Bioacoustic solution to sea lice infestation on salmon- P.O.BOX 93 N-6282 BRATTVÅG. Norway With the institutional support of the ‘Severo OchoaCentre of Excellence’ accreditation (CEX2019-000928-S) Peer reviewed

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