What’s the effectiveness of stocking actions in small creeks? The role of water discharge behind hatchery trout downstream movement

ABSTRACT: Fish stocking to enhance freshwater fisheries or to improve the conservation status of endangered fish species is a common practice in many countries. Little is known, however, of the effectiveness of these practices in spite of the high efforts and investments required. The movement of subadult/adult hatchery-released brown trout Salmo trutta L. was studied by passive telemetry in a small tributary of Lake Lugano (i.e., Laveggio Creek, Canton Ticino, Switzerland). Hatchery fish, together with some resident wild individuals sampled during electrofishing surveys, were tagged with Passive Integrated Transponders (PIT) tags. Hatchery fish were released upstream and downstream a submersible monitoring antenna, which was anchored to the streambed in a pass-over orientation. The number of hatche

SUBMITTER: Brignone S 

PROVIDER: S-EPMC9521347 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature