Wallace, J.C. and Aasjord, D. (1984) The initial feeding of Arctic charr, Salvelinus alpinus (L.) alevins at different temperatures and under different feeding regimes. Aquaculture, pp. 19-33
Species | Development state | Trait | Primary Data | Secondary Data |
Oncorhynchus mykiss | Larvae | Temperature during larval development | It is relevant to note that a temperature of at least 7-8°C is reported as being necessary for initial feeding of Atlantic salmon and rainbow trout | 7.5 °C |
Salmo salar | Larvae | Temperature during larval development | It is relevant to note that a temperature of at least 7-8°C is reported as being necessary for initial feeding of Atlantic salmon and rainbow trout | 7.5 °C |
Salvelinus alpinus | Egg | Temperature for incubation | Egg were incubated at about 3°C | 3.0 °C |
Salvelinus alpinus | Larvae | Temperature during larval development | The experimental temperatures chosen were 3, 6, 8 and 12°C | 3.0 °C |
Salvelinus alpinus | Larvae | Full yolk-sac resorption | Stage 2 was when about two-thirds of the yolk has been used: 61 days (3°C); 44 (6°C), 35 (8°C) and 32 (12°C) and Stage 3 was yolk exhaustion, defined as the point at which less than 1.5% of the yolk remain: 101 days (3°C), 75 (6°C), 59 (8°C) and 48 (12°C) and in degree-days 320 (3°C), 400 (6°C), 450 (8°C) and 570 (12°C) | 2.0 °C * day |
Salvelinus alpinus | Larvae | Onset of exogeneous feeding | First feeding coincided with swim-up at 6°C and at 8°C while at 3°C one fish was observed to have taken food before swim-up. At 12°C swim-up was registered 3 days before the first occurence of feeding. About 170 DD [3°C], 240 [6°C], 250 [8°C] and 320 [12°C] or in days ca. 55 (3°C), 40 (6°C), 35 (8°C) and 32 (12°C). At all temperatures the alevins were between 19 and 22 mm in length at 50% feeding. Registration of 50% occurred about 40 day-degrees after 50% swim-up, independent of temperature | 6.0 °C * day |