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Article

Application of passive-acoustic telemetry to explore the behaviour of ballan wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) in commercial Scottish salmon sea-pens

Citation
Leclercq E, Zerafa B, Brooker AJ, Davie A & Migaud H (2018) Application of passive-acoustic telemetry to explore the behaviour of ballan wrasse (Labrus bergylta) and lumpfish (Cyclopterus lumpus) in commercial Scottish salmon sea-pens. Aquaculture, 495, pp. 1-12. https://doi.org/10.1016/j.aquaculture.2018.05.024

Abstract
A passive-acoustic telemetry system was used for the first time for the fine-scale, three-dimensional tracking of individual cleaner fish in commercial Scottish salmon sea-pens in full commercial operation. The aim was to test the system performance and provide baseline data on the comparative distribution and swimming activity of individual ballan wrasse and lumpfish under standard farm practices with the long-term aim of informing stocking and husbandry strategies. In March 2015, wild ballan wrasse (Labrus bergylta) (115 ± 20 g; n = 13) and farmed lumpfish (Cyclopterus lumpus) (281 ± 42 g; n = 13) previously deployed in June–October 2014 were recaptured, implanted with acoustic tags pinging every 6–12 s and released into their original sea cage holding Atlantic salmon (Q2 2014; 2059 ± 35 g mean-weight). Control tags were deployed in cleaner fish hides to validate the system performance. Positional data from nine specimens per species were analysed from March 24th to June 1st 2015, during which time water temperature rose from 7.2 to 9.1 °C and water salinity averaged 26.8 ± 1.5 ppt at 4 m depth. The accuracy of the acoustic positions averaged 0.6 m across the three dimensions of all control tags and was

Keywords
Acoustic telemetry; Cleaner fish; Ballan wrasse; Lumpfish; Behaviour; Sea lice

Journal
Aquaculture: Volume 495

StatusPublished
Author(s)Leclercq, Eric; Zerafa, Benjamin; Brooker, Adam J; Davie, Andrew; Migaud, Hervé
FundersMarine Harvest (Scotland) Ltd
Publication date01/10/2018
Publication date online19/05/2018
Date accepted by journal14/05/2018
URLhttp://hdl.handle.net/1893/27425
ISSN0044-8486
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