Jatteau, 1991



Citation


Jatteau, P. (1991) Le huchon (Hucho hucho L.) état des connaissances et perspectives. Bull. Fr. Pêche Pisci., pp. 97-108

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Hucho hucho Spawning conditions Mating system By pair, males and females are very aggressive Monogamy
Hucho hucho Spawning conditions Spawning substrate Sand or gravels Ambiguous
Hucho hucho Spawning conditions Spawning site preparation Female dig a nest 30-40 cm deep, and 120-150 cm wide Susbtrate chooser
Hucho hucho Spawning conditions Spawning temperature 8-10 9.0 °C
Hucho hucho Spawning conditions Spawning water type Water with current: 0.6-1 m/s Flowing or turbulent water
Hucho hucho Spawning conditions Spawning depth 0.3-1.2 m 0.75 m
Hucho hucho Egg Incubation time 31 31.0 days
Hucho hucho Female Relative fecundity 1-1.6 1.3 thousand eggs/kg
Hucho hucho Female Age at sexual maturity 3-4 [Male] 3.5 years
Hucho hucho Egg Degree-days for incubation 232-266 249.0 °C * day
Hucho hucho Egg Temperature for incubation 4.8-15.5 [Natural conditions], optimal temperaure 10-12°C 10.15 °C
Hucho hucho Spawning conditions Spawning migration distance Short migrations: from 5 to 10-25 km 17.5 km
Hucho hucho Egg Egg size after water-hardening 4.0-5.5 [2 hours after fertilization] 4.75 mm
Hucho hucho Spawning conditions Spawning season March-April ['April', 'March']
Hucho hucho Spawning conditions Homing Homing behavior Present
Hucho hucho Larvae Full yolk-sac resorption 140-160 150.0 °C * day
Hucho hucho Larvae Initial larval size 13-15 [Fry with yolk-sac] 14.0 mm
Hucho hucho Larvae Larvae behaviour Fry remain on the spawning ground until they reach 40 mm Demersal
Hucho hucho Female Age at sexual maturity 4-5 [Female] 4.5 year
Hucho hucho Spawning conditions Parity The reproduction is annual No category