Abstract
Taimen, Hucho taimen, is the world's largest salmonid and a prized sport fish. We used radio and acoustic telemetry to characterise movements of adult taimen in an extensive river system, the Eg-Uur, in north-central Mongolia. Forty-six taimen were tagged with transmitters (27 radio, 17 acoustic and 2 radio-acoustic combined) and tracked from 2004 to 2008 using mobile surveys and fixed receivers. The mean home range of individual taimen tracked for an average of 2.4 years was 23 km (N = 41, range = 0.5-93.2 km). Of the fish with over 10 relocations (N = 16), 90% remained within a range of 38 km. Four distinct movement patterns were observed: (i) restricted core home range, (ii) core range with seasonal departures, (iii) core range with separate seasonal range and (iv) home range transfer. Movement was greatest in May and June (spawning and postspawning period) with another peak period of movement in September and October (water temperature cooling).
| Original language | American English |
|---|---|
| Pages (from-to) | 545-554 |
| Number of pages | 10 |
| Journal | Ecology of Freshwater Fish |
| Volume | 19 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 2010 |
ASJC Scopus subject areas
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
- Ecology
Keywords
- Hucho taimen
- Migration
- Movement
- Salmonidae
- Telemetry
- Trout