Journal of Aquaculture Research & Development

Atle Mortensen

Publications

• Research Article
  Evaluation of Three External Marking Methods of Farmed Atlantic Salmon for the Future Use of Differentiating it From Wild Atlantic Salmon
  Author(s): Atle Mortensen, Oyvind J Hansen and Velmurugu Puvanendran Atle Mortensen, Oyvind J Hansen and Velmurugu Puvanendran
  
  We evaluated different external marking methods for farmed salmon to differentiate it from wild salmon without any special tools. Three marking methods were tested: 1) Adipose fin (AF) removal, 2) Freeze branding (FB) and, 3) Visible Implant Elastomer (VIE). Location of the marking method on the fish, combination of marking methods and degree of AF removal were tested in three experiments. Atlantic salmon parr weighing 20 g were marked either with individual marks or in combination of two. Further all the fish were also PIT tagged. They were kept in freshwater tanks for 4 months and later after smoltification, smolts were transferred to sea cages and kept for another 4 months. At the end of four (freshwater phase) and ten (sea cages) months, growth, survival and mark retention were recorded. All these methods had no significant effects on growth and survival compared to the control (n.. View More»
  DOI: 10.4172/2155-9546.1000451

  Abstract PDF