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Aggressiveness as a function of external stimulation

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Summary

The attack readiness of a male cichlid, as measured by the rate of attacks directed at small blinded test fish, falls to a very low level if the animal is isolated from adult conspecifics for several weeks. It recovers again within a few days after repeated exposure to adult conspecifics. This readiness to attack could also be restored by repeated presentation of fish dummies, resembling a territorial conspecific male, over a period of 10 successive days. After being raised by this procedure, the attack readiness returned to its prestimulatory level with a half time of 7 days. Theoretical implications and the ecological significance of this long term process are discussed.

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Mit Unterstützung der Deutschen Forschungsgemeinschaft im Rahmen des SFB 50.

We wish to thank R. Fernald and A. and J. Thorson for their kind criticism of our manuscript.

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Heiligenberg, W., Kramer, U. Aggressiveness as a function of external stimulation. J. Comp. Physiol. 77, 332–340 (1972). https://doi.org/10.1007/BF00696433

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  • DOI: https://doi.org/10.1007/BF00696433

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