Compensatory sea growth of male Atlantic salmon, Salmo salar L., which previously mature as parr

• Published in: Journal of Fish Biology
• Main Author: Skilbrei, O. T.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1990
• Subjects: Atlantic salmon; Salmo salar
• Online Access: http://dx.doi.org/10.1111/j.1095-8649.1990.tb05873.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1990.tb05873.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1990.tb05873.x

The proportion of mature male parr in 11 families of Atlantic salmon, Sulrno sulur, reared under similar conditions in fresh water varied from 0–43%. The mature males were smaller than their siblings in December as 1 + and in late March. After individual tagging and transfer to a sea cage in early April. the previously mature males grew faster than previously immature salmon during the next 6 months. This compensatory growth resulted in almost equal size between the two groups. The results are discussed in relation to the different life strategies of salmon.