This article is based on a doctoral study by Diethard Fricke in Fakultät für Biologie, Universität Hamburg.
Reaction to Alarm Substance in Cave Populations of Astyanax fasciatus (Characidae, Pisces)1
Article first published online: 26 APR 2010
1987 Blackwell Verlag GmbH
Volume 76, Issue 4, pages 305–308, January-December 1987
How to Cite
Fricke, D. (1987), Reaction to Alarm Substance in Cave Populations of Astyanax fasciatus (Characidae, Pisces). Ethology, 76: 305–308. doi: 10.1111/j.1439-0310.1987.tb00691.x
- Issue published online: 26 APR 2010
- Article first published online: 26 APR 2010
- Recieved December 2, 1986; April 1, 1987
- Cited By
The effect of species-specific skin-extract containing alarm substance has been studied in two epigean and three hypogean populations of the Mexican-tetra Astyanax fasciatus. In all populations tested the feeding rate at the water surface decreased significantly after introducing the alarm substance and the fish avoided this surface area. Additionally epigean fish and some individuals from the Chica cave showed zigzag movements, rapid swimming and hiding. The fish did not respond to a skinextract of a species without alarm substance.