Kristiansen and Doving, 1996



Citation


Kristiansen, H. and Doving, K. (1996) The migration of spawning stocks of grayling Thymallus thymallus in lake Mjosa, Norway. Env. Biol. Fish., pp. 43-50

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Thymallus thymallus Spawning conditions Spawning period duration Both males and females return to the lake shortly after spawning, males generally within 15 days and females within 10 days 15.0 weeks
Thymallus thymallus Female Age at sexual maturity A few males were found to be mature at age two. At age three, half og the grayling were mature and by age five years all males and females were mature No data
Thymallus thymallus Egg Temperature for incubation Grayling hatch in June No data
Thymallus thymallus Spawning conditions Spawning migration distance Grayling tagged in the autumn were recaptured in the spawning periods in crekks up to 27 km away from the tagging site 27.0 km
Thymallus thymallus Spawning conditions Spawning migration period Ascend tributaries in May/June when water temperature increase to 5°C ['May', 'June']
Thymallus thymallus Spawning conditions Spawning season Spring spawner No data
Thymallus thymallus Spawning conditions Homing 240 of 284 (84%) grayling recaptured in the tributaries were found in the tributary where they had been caught and tagged Present
Thymallus thymallus Female Age at sexual maturity At age three, half of the grayling were mature and by age five years all males and females were mature No data
Thymallus thymallus Spawning conditions Parity Grayling in Lake Mjosa are consecutive and repetitive spawners No category