Hewson, 1955


Citation

Hewson, L.C. (1955) Age, maturity, spawning and food of burbot, Lota lota, in Lake Winnipeg. Journal of the fisheries research board of Canada, pp. 930-940

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Lota lota Female Age at sexual maturity Some burbot are probably sexuallu mature when 2 years old, and immaturity seems to be associated more with size than with age 2.0 year
Lota lota Female Length at sexual maturity 16.2 [Age 3], 19.3 [Age 4], 20.7 [Age 5] both sex in Winnipeg Beach 16.2 cm
Lota lota Female Weight at sexual maturity 1.3 pounds [Age 3], 2.2 [Age 4], 2.4 [Age 5] both sex in Winnipeg Beach. The largest immature female weighed 1.5 pounds 1.3 kg
Lota lota Female Female sexual dimorphism Females reach maturity at a lesser weight than males, possibly younger Absent
Lota lota Male Age at sexual maturity Some burbot are probably sexually mature when 2 years old, and immaturity seems to be associated more with size than with age 2.0 years
Lota lota Male Length at sexual maturity 16.2 [Age 3], 19.3 [Age 4], 20.7 [Age 5] both sex in Winnipeg Beach 16.2 cm
Lota lota Male Weight at sexual maturity The largest immature male weighed 2.2 pounds 2.2 kg
Lota lota Spawning conditions Spawning season Male burbot were observed in a near-ripe condition about January 20 in each year, and actual spawning probably commenced about January 31. Many fish were spent by February 10, but ripe unspawned fish of both sex occurred as late as February 20. ['January', 'February']
Lota lota Spawning conditions Spawning period duration Lasts about 3 weeks 3.0 weeks
Lota lota Spawning conditions Spawning water type Spawning condition occurred both inshore and offshore, but they were observed in greater numbers in the inshore nets Stagnant water
Lota lota Spawning conditions Spawning depth The spawning act was accomplished near the surface No data
Lota lota Spawning conditions Parity Some mature fish do not spawn every year Iteroparous