Fraser, J.M. (1985) Shoal spawning of brook trout, Salvelinus fontinalis, in a Precambrian shield lake. Naturaliste Canadien., pp. 163-174
Species | Development state | Trait | Primary Data | Secondary Data |
Salvelinus fontinalis | Egg | Oocyte diameter | 4.8-4.9 | 4.85 mm |
Salvelinus fontinalis | Egg | Incubation time | About 100 in natural conditions | 100.0 days |
Salvelinus fontinalis | Larvae | Initial larval size | 20.4 ± 0.3 [Newly-hatched larvae, but not sure to be the size at hatching !] | 20.4 mm |
Salvelinus fontinalis | Larvae | Larvae behaviour | After hatcing, alevins remain in the gravel, deriving nourishment from their yolk sacas until March, when they emerge as new fry | Demersal |
Salvelinus fontinalis | Female | Age at sexual maturity | Mostly 3-4, few at 2 [Both sex] | 3.5 year |
Salvelinus fontinalis | Female | Length at sexual maturity | Mean 41, range 29.5-53.3 [Both sex] | 41.4 cm |
Salvelinus fontinalis | Female | Absolute fecundity | Mean 2.3, range 0.8-3.8 | 2.3 thousand eggs |
Salvelinus fontinalis | Male | Age at sexual maturity | Mostly 3-4, few at 2 [Both sex] | 3.5 years |
Salvelinus fontinalis | Male | Length at sexual maturity | Mean 41, range 29.5-53.3 [Both sex] | 41.4 cm |
Salvelinus fontinalis | Spawning conditions | Homing | Tag recaptures from fish tagged several years suggest that brrok trout spawn each year at the same spawning bed | Present |
Salvelinus fontinalis | Spawning conditions | Spawning season | October-November | ['October', 'November'] |
Salvelinus fontinalis | Spawning conditions | Spawning period duration | 4-5 [From Mid-October to end of November, Males apparently spent a longer period of time on the spawning area, probably 15-20 days, while females seldom seen on the bed more than 10 days after their first appeareance] | 4.5 weeks |
Salvelinus fontinalis | Spawning conditions | Spawning depth | The depth of the water is mostly 50-75 cm, but can fluctuate up to 15 cm during the spawning season, and as much as 30 cm at other times of the season | 62.5 m |
Salvelinus fontinalis | Spawning conditions | Spawning substrate | Gravel-sand shoal that extends about 25 m from shore | Lithophils |
Salvelinus fontinalis | Spawning conditions | Parity | Tag recaptures from fish tagged several years suggest that brrok trout spawn each year at the same spawning bed | No category |