Beddow, 1998



Citation


No detailed citation.

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Salvelinus alpinus Spawning conditions Spawning substrate Habitat for the majority of sites consisted of 40% boulders, 50% rubble, and 10% san/gravel Lithophils
Salvelinus alpinus Spawning conditions Spawning temperature Spawning was believed to have occured during late September and in the first week of October, when temperature dropped below 7°C 7.0 °C
Salvelinus alpinus Spawning conditions Spawning water type Pools, or in association with large boulders downstream riffles [Water flow about 1 m/s] Flowing or turbulent water
Salvelinus alpinus Spawning conditions Spawning depth 1-2 m deep 1.5 m
Salvelinus alpinus Female Maximum GSI value In spawning females, there was a definite increase in GSI's throughout August and september, with females immediatly prior to spawning ranging from 20-30%, up to 35.7% 25.0 percent
Salvelinus alpinus Male Maximum GSI value 1.3-6.1 [End of September] 3.7 percent
Salvelinus alpinus Female Age at sexual maturity Average age of sexually mature fish from the Fraser River, nothern Labrador was 5.2 for males 5.2 years
Salvelinus alpinus Spawning conditions Spawning migration period Extensive studies on the annual migrations of Fraser River Arctic char in Nothern Labrador has revealed that seaward migration of char occurs during May and early Junecoinciding with spring run off and river ice break up. The larger fish, both maturing and non-maturing, usually begin to enter the sea first, followed by smaller adults and juveniles. The return upstream migrations begin mid July with the peak return occuring in August ['April', 'May', 'August', 'June', 'July']
Salvelinus alpinus Egg Oocyte diameter 3.5-5.0 4.25 mm
Salvelinus alpinus Spawning conditions Spawning season Spawning was believed to have occured during late September and in the first week of October ['October', 'September']
Salvelinus alpinus Female Weight at sexual maturity The most common modal size range for the char within the 2 rivers was 1.2 ± 0.1 kg 1.2 kg
Salvelinus alpinus Female Length at sexual maturity The most common modal size range for the char within the 2 rivers was 44 ± 3 cm fork length 44.0 cm
Salvelinus alpinus Male Length at sexual maturity The most common modal size range for the char within the 2 rivers was 44 ± 3 cm fork length 44.0 cm
Salvelinus alpinus Male Weight at sexual maturity The youngest sexually mature char detemirnated was a 4-year-old male, weighting 0.31 kg at 30.3 cm in length [The most common modal size range for the char within the 2 rivers was 1.2 ± 0.1 kg] 1.2 kg
Salvelinus alpinus Female Age at sexual maturity Average age of sexually mature fish from the Fraser River, nothern Labrador was 6.9 for females 6.9 year
Salvelinus alpinus Spawning conditions Parity Since spawning requires high energy output, females often oly spawn every 2 or 3 years, and therefore, not all the adults are part of the spawning population in a given year No category