Biological characteristics of sea trout smolts (Salmo trutta m. trutta L.) grown in the River Gowienica catchment area

Abstract

This paper examines length, length in the period of descending, weight, length-weight relationship, factor condition as well as the period of descending during 24 hrs of the sea trout smolts grown in the Pomeranian catchment area of Gowienica river.

Period of downstream migration of sea trout (Salmo trutta L.) smolt grown in Gowienica River

“…· The sea trout grown in Baltic Sea enter the Gowienica river to spawn (Chelkowski, 1966(Chelkowski, , 1967. However, during the period of experiment, as well as at least through 3 years before, the migration could take place only in lower section of river, up to the weir in Widziensko, being an obstacle for further fish trip.…”

Age structure of the smolts of the migratory morphotype of the brown trout (Salmo trutta m. trutta L., 1758) from the Gowienica River

“…The first information on the trout stocking in the drainage area of the Gowienica River was published by Chelkowski (1966). In the following years the trout of the Gowienica River was studied by: Chelkowski (1967), Chelkowski et al (1994), and Chelkowski and Chelkowska (1995). The first of these papers dealt with the description of the broodstock of the trout of the Gowienica River, the second Fig.…”