Game

Reindeer

Fish

Aquaculture

Economics and society


	Fish resources	Exploitation of fish stocks		Fish stocking research		Environment of fish	Baltic Sea Research	Regulated Rivers	Crayfish	Fish atlas

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

Results of the whitefish stockings in the Gulf of Bothnia

Whitefish is one of the most important fish species in the Gulf of Bothnia fisheries. Millions of one-summer old whitefish fingerlings are released in the Gulf of Bothnia each year to compensate adverse effects of human activities and to enhance fisheries. However, only little is known about the results of the stocking programs or factors affecting the results. By marking released groups of fingerlings with fluorescent pigment marking method, we aim to learn more on the effects of the whitefish releases and causes behind these effects. The results can be used to enhance whitefish stocks and to guide the compensatory stocking programs.

Goals

To learn more on the results of whitefish stocking programs in the Gulf of Bothnia.

Benefits

The results help to increase the benefits and decrease the adverse effects of whitefish stocking.

Project's leader

Ari Leskelä

Other persons

Erkki Jokikokko, Alpo Huhmarniemi, Matti Salminen

Duration

2001 - 2014

Text version

	More information

	Scientific publications:
	»	Is it possible to increase the stocking results of the whitefish in the Finnish Gulf of Bothnia by means of fisheries management?