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Fish stocking research programme 2006-2012:
» Current issues in stocking
» Beneficiaries and impacts of the programme
» Contents of the research programme 
  •Physiological analyses
  •Results of the whitefish stockings in the Gulf of Bothnia
  •Successful stocking
  •The effect of stocking age on the survival of Saimaa Arctic charr in lakes with different fisheries
  •Factors contributing to the quality of stocked landlocked salmon juveniles
  •Biological basis for restoration of the natural life cycle of landlocked salmon

Successful stocking

Many salmon and brown trout populations in the world are endangered and dependent on restocking. However, restocking of fish has not been successful in many cases. The main reason for this is the high mortality of the released fish. One obvious reason is that life skills that are important for survival in the wild are weakened by domestication selection and unnatural rearing environment. To counteract this we have developed a new more natural production-scale rearing method.

Goals

Ecologically and economically more effective large-scale production of stocked fish than the present methods.

Benefits

More viable fish produced by new methods are more cost-efficient for large-scale production than the currently used standard method. More productive fish stocks and stockings bring benefits for both fishermen and fish farmers.

Project's leader

Pekka Hyvärinen

Other persons

Jorma Piironen, Pekka Korhonen, Matti Salminen

Duration

2008–2012



Text version

 


© Finnish Game and Fisheries Research Institute.Modified 2011-4-18