Change of Aggressive Readiness in Post-Irradiation Generations of the Convict Cichlid Fish, Cichlasoma nigrofasciatum

  • S. Holzberg
Conference paper


During evolution, changes in behavior patterns are thought to precede those of morphological traits (Wickler, 1961). Furthermore, it is generally accepted that most species-specific behavior patterns are inborn. Accordingly, mutations concerning behavior patterns attain special evolutionary significance because they produce new candidates for evolution.




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  1. Holzberg, S., Schröder, J.H. (1972): Behavioral mutagenesis in the convict cichlid fish, Cichlasoma nigvofasciatura Guenther. I. The reduction of male aggressiveness in the first post-irradiation generation. Mutation Res. 16, 289–296.PubMedCrossRefGoogle Scholar
  2. Manning, A. (1967): Genes and the evolution of insect behavior. In: Behavior-Genetic Analysis (ed. J. Hirsch), New York: McGraw-Hill.Google Scholar
  3. Wickler, W. (1961): Ökologie und Stammesgeschichte von Verhaltensweisen. Fortschr. Zool. 13, 303–365.PubMedGoogle Scholar

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© Springer-Verlag Berlin · Heidelberg 1973

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  • S. Holzberg

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