Thermal injuries in Atlantic salmon in a pilot laboratory trial

Thermal delousing is a new method for removing sea lice from farmed Atlantic salmon (Salmo salar L). We investigated thermally-related tissue injuries in Atlantic salmon in a pilot laboratory trial to describe the acute effect of high water temperatures (34–38 °C). Acute tissue injuries in gills, ey...

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Bibliographic Details
Published in:Veterinary and Animal Science
Main Authors: Gismervik, Kristine, Gåsnes, Siri K., Gu, Jinni, Stien, Lars H., Madaro, Angelico, Nilsson, Jonatan
Format: Text
Language:English
Published: Elsevier 2019
Subjects:
Article
Atlantic salmon
Salmo salar
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7386709/
https://doi.org/10.1016/j.vas.2019.100081
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Summary:Thermal delousing is a new method for removing sea lice from farmed Atlantic salmon (Salmo salar L). We investigated thermally-related tissue injuries in Atlantic salmon in a pilot laboratory trial to describe the acute effect of high water temperatures (34–38 °C). Acute tissue injuries in gills, eyes, brain and possible also nasal cavity and thymus were seen in salmon exposed to water temperatures of 34 - 38 °C in 72 to 140 s. This implies that exposing salmon to such water temperatures is a welfare risk, not only due to the direct tissue injuries that may also be dependent on exposure time, but also due to risk of thermal pain and aversion, including flight reactions.

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