Can the lost migratory Salmo trutta stocks be compensated with resident trout stocks in coastal rivers?

Publication year: 2010
Source: Fisheries Research, Volume 102, Issues 1-2, February 2010, Pages 69-79</br>
Irma, Kallio-Nyberg , Eero, Jutila , Marja-Liisa, Koljonen , Jarmo, Koskiniemi , Irma, Saloniemi</br>
The migration patterns and recapture rates of migratory and resident trout stocks (Salmo trutta) were compared by tagging and releasing hatchery-reared smolts of both migratory types in the same coastal rivers, Merikarvianjoki (river A) and Viantienjoki (river B), flowing into the Gulf of Bothnia, the Baltic Sea. There is no longer native trout production in these open rivers. The resident trout stocks originated from closed streams. The resident Karvianjoki (R1_A) trout released in river A remained resident more often (70%) than the migratory Isojoki trout (M1_A) (16%) (P