Journal
BEHAVIOURAL PROCESSES
Volume 106, Issue -, Pages 1-4Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.beproc.2014.03.010
Keywords
Fish; Memory; One-trial memory test
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Zebrafish represents a very promising model to study memory function and impairment in vertebrates. The one-trial memory test has proven to be a reliable method to assess memory in mammals without the need for an extensive training procedure or the learning of a rule. To investigate whether such a test is suitable for zebrafish we observed adult fish in a modification of the original one-trial memory test developed for rats. Subjects were allowed to familiarize themselves with a new object for 25 min (exposure phase) and were then required to discriminate between the familiar object and a novel object that differed in shape and color (test phase). In both phases zebrafish showed a clear tendency to explore a new object, can memorize the characteristics of this object and use this information when a second object was presented irrespective of the delay (2, 6 or 24 h) that separated the two phases. These results suggest that memory performance in fish could be also assessed using this very simple test. (C) 2014 Elsevier B.V. All rights reserved.
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