Journal of Chemical Ecology

, Volume 26, Issue 7, pp 1635–1647

Alarm Response of Arius felis to Chemical Stimuli from Injured Conspecifics

  • Michael E. Smith

DOI: 10.1023/A:1005586812771

Cite this article as:
Smith, M.E. J Chem Ecol (2000) 26: 1635. doi:10.1023/A:1005586812771


The hardhead catfish (Arius felis) showed increased activity when subjected to water containing chemical cues of injured conspecifics. This response was similar to the visually stimulated response to a model of a predatory fish. Arius felis also responded to chemical cues of injured sailfin mollies (Poecilia latipinna) with increased activity, but this was less than in response to conspecific chemical cues. A histological examination of Arius felis epidermis revealed that the alarm substance cells of marine catfish are similar to those of freshwater catfish. Responses to odors of injured individuals is common among ostariophysans, which are mostly freshwater fishes. This is the first demonstration of an alarm reaction in a marine ostariophysan.

Arius felis alarm response chemical stimuli Schreckstoff club cells chemoreception skin extract Ostariophysi alarm substance 

Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • Michael E. Smith
    • 1
  1. 1.Marine Science InstituteThe University of Texas at AustinPort Aransas

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