The course of migrations of smolts of the brown trout (Salmo trutta m. trutta L.) grown in the rivers of Pomerania

Abstract

In the present report the daily seaward migrations of the brown trout (Salmo trutta m. trutta L.) smolts, grown in natural conditions in Pomeranian rivers: the Mołstowa, surveyed for one season, the Gowienica-for twe seasons, and the Osówka-for two seasons, were analysed. The intensity of the migrations was related to the water temperatures and the moon phases. The above studies were based on a total of 5593 acquired smolts.