Over-summering behaviour of Atlantic salmon Salmo salar returning to rivers in the Cromarty Firth, north-east Scotland

Authors: Stewart; Middlemas; Mackay; Armstrong

Source: Journal of Fish Biology, Volume 74, Number 6, April 2009 , pp. 1347-1352(6)

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Abstract:

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.

Keywords: disease transfer; homing; migration; switching rivers

Document Type: Research article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2009.02201.x

Affiliations: 1: Fisheries Research Services, Freshwater Laboratory, Faskally, Pitlochry, Perthshire PH16 5LB, Scotland, U.K.

Publication date: 2009-04-01