Abstract

This study investigated whether shelter (presence or absence) affected the frequency of fin damage in Atlantic salmon Salmo salar exposed to feed restrictions (0.73 or 0.33% of body mass day(-1)). The presence of shelter had a positive effect on the pectoral fins at both feed ration levels and on the dorsal fin at the higher ration level but it had a negative effect on survival. The reduced feed rations resulted in fish of the same size and nutritional status as wild fish. The provision of shelter has potential to mitigate the negative effects of feed restrictions on fin quality, but the optimal shelter design requires some additional investigation. (C) 2014 The Fisheries Society of the British Isles

Keywords

aggressive behaviour; enrichment; fat; fin damage; hatchery; wild-like

Published in

Journal of Fish Biology
2014, Volume: 85, number: 3, pages: 645-656

SLU Authors

• Persson, Lo

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

• Alanärä, Anders

  • Department of Wildlife, Fish and Environmental Studies, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

Conserve and sustainably use the oceans, seas and marine resources for sustainable development


UKÄ Subject classification

Fish and Aquacultural Science
Ecology


Publication identifier

DOI: https://doi.org/10.1111/jfb.12443

Permanent link to this page (URI)

https://res.slu.se/id/publ/60754