of places where man mad canals exist, have fry been released, and to what result.
Hi Omar,
this is a interesting question. In former lignite mining areas in eastern Germany are formed many opencast mining lakes. The water in the most opencast mining lakes are very acid. In the north of the city of Leipzig some of rivers (Mulde, Weiße Elster, etc.) flow into the opencast mining lakes, that means that the water will generally favorable for fish and therefore for salmons. Encloused you find a link:https://www.lmbv.de/index.php/Nachrichtenleser/598.html
There find an example of your question.
Regards
Michael Lersow
Hi Omar
We have released Atlantic salmon in a stream and changed the downstream part of it after the fish migrated to sea. We have also released salmon in the ocean and in a heavily modified stream ( e.g. Hansen et al. 1993; Hansen & Jonsson 1990, 1994). In the case where we changed the outlet, the salmon returned to the old outlet after having fed in the ocean for one year, not to the new outlet where the water came out. In the second case, fish returned to the place in the ocean where released, and from there moved to nearby rivers, not to the river of origin. Salmon also return to the heavily modified River Akerselva in Oslo, when released there (Hansen & Jonsson 1990). Thus, there should be no problem releasing salmon in a man-made river as long as environmental conditions for salmon are suitable. They should migrate to sea and return when adult. Whether they will survive in the stream depends on water quality, substrate, competitors and predators (handling and diseases included).
Reference
Hansen, L.P., N. Jonsson & B. Jonsson (1993) Oceanic migration of homing Atlantic salmon. - Anim. Behav. 45: 927-941.
Hansen, LP & Jonsson B (1990) Hansen, L.P. & B. Jonsson) Restocking the River Akerselva, Oslo with Atlantic salmon smolts Salmo salar L. of different stocks. - Fauna norv. Ser. A 11: 9-15.
Hansen, LP & Jonsson B (1994) Development of sea ranching of Atlantic salmon towards a sustainable aquaculture strategy. - Aquaculture and Fisheries Management 25 (Supplement 1): 199-214.
Best wishes,
Bror Jonsson
The sudden death of 100 salmon in the Opawa River on Friday has scientists testing the waterway for possible contaminants .( http://www.stuff.co.nz/national/86766727/Salmon-die-suddenly-after-being-released-for-Fish-and-Game-event)
In Aral Sea basin, in 1973 fry, fingerlings and yearlings of Issikkul trout - Salmo ischchan issykogegarkuni and rainbow trout S. gairdneri Rich. were released in Chirchiq River, a mountain water reservoir Charvaq and its tributaries. Both of them were well naturalized and became as an object of recreational fishery.
Book INLAND CAPTURE FISHERIES AND AQUACULTURE IN THE REPUBLIC OF ...
Book Feasibility of stocking and culture-based fisheries in Central Asia
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