Delayed plasticity of an instinct: Recognition and avoidance of 2 facing eyes by the jewel fish
Article first published online: 13 OCT 2004
Copyright © 1979 John Wiley & Sons, Inc.
Volume 12, Issue 4, pages 335–345, July 1979
How to Cite
Coss, R. G. (1979), Delayed plasticity of an instinct: Recognition and avoidance of 2 facing eyes by the jewel fish. Dev. Psychobiol., 12: 335–345. doi: 10.1002/dev.420120408
- Issue published online: 13 OCT 2004
- Article first published online: 13 OCT 2004
- Manuscript Revised: 23 JAN 1978
- Manuscript Received: 14 APR 1977
A model depicting 2 horizontally positioned black spots resembling facing eyes, as compared with models depicting other spot arrangements, elicits intense flight activity in young African jewel fish (Hemichromis bimaculatus) under 5 months of age and 7-month-old subadults reared apart from conspecifics with eyeless cave fish (Anoptichthys jordani). In contrast, subadults permitted to observe or interact fully with conspecifics during development exhibited attenuated discriminative flight activity. These findings suggest that visual experience with facing conspecifics, irrespective of physical contact, modifies the flight-eliciting properties of the innate mechanism subserving eye-schema recognition, but only during later maturation.