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Specific Individuals of Rainbow Trout (Oncorhynchus mykiss) Are Able to Show Time-Place Learning


Heydarnejad, MS and Purser, GJ, Specific Individuals of Rainbow Trout (Oncorhynchus mykiss) Are Able to Show Time-Place Learning, Turkish Journal of Biology, 32, (3) pp. 209-229. ISSN 1300-0152 (2008) [Refereed Article]


Using demand-feeders, time-place learning association of food was investigated in rainbow trout (Oncorhynchus mykiss) in 2 small raceways (TR1 and TR2). In order for the fish to be visually identified, they were tagged individually and their behaviour and distribution were monitored by cameras. Equipping with a demand-feeder, TR1 was assigned to test 2 times/1 place (2T/1P) while 2 demand-feeders were used in TR2 assigned to test 2 times/2 places (2T/2P). After 26 days of restricted feeding (RF) the fish were deprived of food for 3 days. The results of the present study indicate that, at the group level, rainbow trout are not able to clearly demonstrate time-place learning except for some fish in the group. These fish were identified as dominants, in terms of a higher rate of agonistic acts or a greater amount of food eaten. Feeding behaviour was largely influenced by social dominance of the group, especially through territoriality. © TÜBİTAK.

Item Details

Item Type:Refereed Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture fin fish (excl. tuna)
UTAS Author:Heydarnejad, MS (Mr M. Heydarnejad)
UTAS Author:Purser, GJ (Associate Professor John Purser)
ID Code:54329
Year Published:2008
Web of Science® Times Cited:3
Deposited By:NC Marine Conservation and Resource Sustainability
Deposited On:2009-02-17
Last Modified:2011-11-30

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