Skip to main content

Reproductive migration of brown trout in a small Norwegian river studied by telemetry

Buy Article:

$43.00 plus tax (Refund Policy)

The movement of 34 large (39–73 cm standard length) brown trout Salmo trutta was monitored using radio telemetry for up to 74 days in Brumunda, a small Norwegian river (mean annual discharge 3·3 m3 s−1) flowing into the large Lake Mjøsa. The maximum range of movement in the river was 20 km. No clear relationships existed between individual movement and water discharge, temperature and barometric pressure. Brown trout migrated at all levels of water discharge. At low discharge (<2 m3 s−1) movements were nocturnal. A weir 5·3 km from the outlet restricted ascending brown trout at low (c. 6° C), but not at high (c. 8° C) water temperatures. Spawning occurred in September to October and tagged individuals spent 2–51 days at the spawning sites. Mean migration speed from tagging to when the fish reached the spawning area, and from when they left the spawning areas and reached the lake was 1·0 and 2·3 km day−1, respectively. All tagged brown trout that survived spawning returned to the lake after spawning.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Keywords: Salmo trutta; hydrology; migratory behaviour; radio telemetry; spawning migration

Document Type: Regular Paper

Affiliations: 1: University of Oslo, Department of Biology, P. O. Box 1050 Blindern, N-0316 Oslo, Norway and 2: Norwegian University of Science and Technology, Museum of Natural History and Archaeology, N-7491 Trondhein, Norway

Publication date: 2004-01-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more