Spatial aspects of electrolocation in the mormyrid fish, Gnathonemus petersii

Push, S.; Moller, P.

Journal de Physiologie 75(4): 355-357


ISSN/ISBN: 0021-7948
PMID: 512970
Accession: 021779349

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The range of electrolocation in the weakly electric fish, Gnathonemus petersii, was determined for plastic and aluminium cubes. A characteristic change in the fish's EOD activity, and abrupt change to more uniform EOD intervals (regularization), was used as the criterion for object detection. The average response distances extending laterally from the fish's longitudinal axis were significantly different (p less than 0.05) for the aluminium cube (5.4 cm) and the plastic cube (7.0 cm).