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
Species | Development state | Trait | Primary Data | Secondary Data |
Salvelinus alpinus | Egg | Oocyte diameter | The diameter of the large eggs exceeded 4 mm [In ova] | 4.0 mm |
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 | Female | Length at sexual maturity | The length at maturity of the Syvia Grinnel char is about 45 cm | 45.0 cm |
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] | 3.59 thousand eggs |
Salvelinus alpinus | Female | Oocyte development | At least two size groups of eggs were present in many of the fish | No category |
Salvelinus alpinus | Female | Intensifying oogenesis activity | Growth in the size of the eggs occurred during the first half of July | ['July'] |
Salvelinus alpinus | Male | 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 years |
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 | 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', 'June', 'July', 'August', 'September'] |
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 |