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Over‐summering behaviour of Atlantic salmon Salmo salar returning to rivers in the Cromarty Firth, north–east Scotland
Author(s) -
Stewart D. C.,
Middlemas S. J.,
Mackay S.,
Armstrong J. D.
Publication year - 2009
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2009.02201.x
Subject(s) - salmo , firth , fishery , estuary , biology , fish migration , salmonidae , fish <actinopterygii> , oceanography , geology
In 2005, a high percentage (50%) of Atlantic salmon Salmo salar fitted with acoustic transmitters, which entered rivers in the Cromarty Firth area of north–east Scotland dropped back to the estuary and ascended adjacent rivers after 33–80 days of freshwater residence. Fish residing in non‐natal rivers generate mixed stock fisheries, and movements of fish between rivers could increase the risk of disease transmission between catchments.