The survival of smolts of salmon Salmo salar L. at low concentrations of dissolved oxygen

• Published in: Journal of Fish Biology
• Main Authors: Alabaster, J. S., Shurben, D. G., Mallett, M. J.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1979
• Subjects: Atlantic salmon; Salmo salar
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1979.tb03567.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1979.tb03567.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1979.tb03567.x

The survival of Atlantic salmon smolts on sudden exposure to low constant concentrations of dissolved oxygen (DO) has been measured under laboratory conditions; the 3‐d LC50 is about 3 mg l −1 in freshwater and about 2.5 mg l −1 in 30% and 80%‘sea water’, even for fish acclimated for several days to low concentrations of DO and high salinity; median threshold concentrations of DO are probably close to 3.3 and 2.6 mg l −1 respectively.