Bardonnet, A. and Gaudin, P. (1990) Influence de ma lumière au cours de l'ontogénèse sur l'expression du rythme d'émergence de l'alevin d'ombre commun, Thymallus thymallus (L. 1758). Bulletin francais de la peche et de la pisciculture [Bull. Fr. Peche Piscic.]., pp. 35-49
Species | Development state | Trait | Primary Data | Secondary Data |
Thymallus thymallus | Egg | Degree-days for incubation | About 200, vary between 150-230 according to different authors | 190.0 °C * day |
Thymallus thymallus | Larvae | Reaction to light | The fry emerge from gravel during the dawn, day | Photopositive |
Thymallus thymallus | Larvae | Temperature during larval development | Reared at 10.4°C | 10.4 °C |
Thymallus thymallus | Larvae | Full yolk-sac resorption | Remain within the gravel during 120-150 DD until their yolk sac is almost fully resorbed | 135.0 °C * day |
Thymallus thymallus | Spawning conditions | Spawning substrate | Gravel | Lithophils |
Thymallus thymallus | Spawning conditions | Spawning site preparation | Eggs are buried but not deep within the substrate [No nest is built] | Susbtrate chooser |