Development of behaviour in alevins of atlantic salmon, Salmo salar, and rainbow trout, S. gairdneri
- 28 February 1977
- journal article
- Published by Elsevier BV in Animal Behaviour
- Vol. 25, 116-121
- https://doi.org/10.1016/0003-3472(77)90073-2
Abstract
The development of behaviour in Atlantic salmon (Salmo salar) and rainbow trout (S. gairdneri) in a gravel-free environment was observed from hatching to the age corresponding to 1 week after emergence at 15 °C (40 days). Records included changes in posture and spatial distribution and the development of swimming, surfacing, ingestive and agonistic behaviour acts. Young fish of both species with large yolk sacs held a posture and locomoted with their head down, had difficulty in remaining upright, and were essentially photonegative. As the yolk sac was exhausted the body axis became more horizontal, an upright position was maintained, and photonegativity was reduced. Surfacing behaviour occurred just prior to the emergence of conspecifics from gravel. Until the age of emergence, the behaviour of the two species was very similar. Upon emergence, rainbow trout became pelagic and exhibited immediate feeding and extensive agonistic behaviour. Atlantic salmon remained on the substrate after emergence, began to feed at the same age as trout but exhibited less agonistic behaviour.Keywords
This publication has 11 references indexed in Scilit:
- Effects of Gravel Size, Egg Depth, and Egg Density on Intragravel Movement and Emergence of Coho Salmon (Oncorhynchus kisutch) AlevinsJournal of the Fisheries Research Board of Canada, 1970
- Effects of Some Environmental Factors on Survival, Condition, and Timing of Emergence of Chum Salmon Fry (Oncorhynchus keta)Journal of the Fisheries Research Board of Canada, 1970
- Zur Stammesgeschichte einiger Bewegungsweisen bei Fischen, untersucht am Verhalten von Haplochromis (Pisces, Cichlidae)Zeitschrift Fur Tierpsychologie, 1966
- The influence of surface contour on the behaviour of trout alevins S. trutta L.Animal Behaviour, 1963
- Territorial Behaviour of Juvenile Atlantic Salmon (Salmo Salar L.)Behaviour, 1962
- Distribution and differentiation of alkaline phosphatase in the gastro-intestinal tract of steelhead troutJournal of Experimental Zoology, 1961
- The Analysis of Social Organization in AnimalsEcology, 1956
- Social Behavior and Interspecific Competition in Two Trout SpeciesPhysiological Zoology, 1956
- When Do Trout and Grayling Fry Begin to Take Food?The Journal of Wildlife Management, 1939
- The behavior of Brook Trout' embryos from the time of hatching to the absorption of the yolk sac.Journal of Animal Behavior, 1915