Grainger, 1953



Citation


Grainger, E.H. (1953) On the age, growth, migration, reproductive potential and feeding habits of the Arctic char (salvelinus alpinus) at Frobisher Bay, Baffin Island. Journal of the fisheries research board of Canada, pp. 326-370

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Salvelinus alpinus Female Age at sexual maturity Maturity occurs in the Sylvia Grinnel River at about 12 winters, and in George River at least as early as 7 winters, possibly younger 7.0 years
Salvelinus alpinus Female Intensifying oogenesis activity Growth in the size of the eggs occured during the first half of July ['July']
Salvelinus alpinus Spawning conditions Spawning migration period The return to fresh waer begins in late July or early August and continues until at least early September, and its occurrence seems to be influenced by tidal conditions, most upstream movement takink place at high tides, and the first mass upstream migration beginning during high spring tides ['April', 'May', 'September', 'August', 'June', 'July']
Salvelinus alpinus Female Oocyte development At least two size groups of eggs were present in many of the fish No category
Salvelinus alpinus Egg Oocyte diameter The diameter of the large eggs exceeded 4 mm [In ova] 4.0 mm
Salvelinus alpinus Female Absolute fecundity 3.589 [Corresponds to the mean maturing egg count from fish, rangin in length from 49 to 66.5 cm, and averaging 56 cm] 3.589 thousand eggs
Salvelinus alpinus Female Length at sexual maturity The length at maturity of the Syvia Grinnel char is about 45 cm 45.0 cm
Salvelinus alpinus Male Length at sexual maturity The length at maturity of the Syvia Grinnel char is about 45 cm 45.0 cm
Salvelinus alpinus Female Age at sexual maturity Maturity occurs in the Sylvia Grinnel River at about 12 winters, and in George River at least as early as 7 winters, possibly younger 12.0 year
Salvelinus alpinus Spawning conditions Parity Lives more than 24 years [It is apparent that all the females within the size range of maturity do not spawn every autumn] No category