Publisert 2016

Les på engelsk

Publikasjonsdetaljer

Tidsskrift : Natural Resources , vol. 7 , p. 377–383 , 2016

Internasjonale standardnummer :
Trykt : 2158-706X
Elektronisk : 2158-7086

Publikasjonstype : Vitenskapelig artikkel

Bidragsytere : Espmark, Åsa Maria O.; Midling, Kjell Ø.; Nilsson, Jonatan; Humborstad, Odd Børre

Sak : 7

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Kjetil Aune
Bibliotekleder
kjetil.aune@nofima.no

Sammendrag

The aim of this study was to evaluate the effects of pumping height and repeated pumping on the generalized stress response and gross injuries in harvest sized Atlantic salmon. Fish pumped from a net pen at either high (5.2 m) or low (3.6 m) pumping heights showed an elevated, but not severe physiological stress response (pH, pCO2, lactate, potassium, haematocrit, and sodium) compared to fish netted (not pumped), while effects of different pumping heights were overall not demonstrated. Repeated pumping (either 3 or 6 times) also caused an increase in stress response (pH, pCO2, pO2, lactate, potassium and sodium) compared to control fish, and a positive dose-response relationship was found for lactate. No fish died as a result of pumping, nor were injuries observed that could exclusively be attributed to pumping. In conclusion, although elevated from the control groups, the stress response following increasing pumping height and repeated pumping as conducted in these experiments were not indicative of causing severe stress or injuries

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