Loewe, H. and Eckmann, R. (1988) The ontogeny of alimentary tract of coregonid larvae: normal development. J. Fish. Biol., pp. 841-850
| Species | Development state | Trait | Primary Data | Secondary Data |
| Coregonus lavaretus | Larvae | Full yolk-sac resorption | The yolk is used 7 days after the start of feeding (which is four days after hatching), and the oil globule of the yolk sac persists about 10 days longer at 12°C for Coregonus fera !! | 7.0 °C * day |