SOCIAL BEHAVIOR IN FRESH-WATER FISH AND ITS EFFECT ON RESISTANCE TO TRYPANOSOMES

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Abstract
Observations, in general, support those previously made on the immunology of fish and amphibians. Temperature and feeding are 2 of the factors involved. Observations also show that the production of antibodies may be controlled by the social position of the animal, particularly if strong territorial behavior develops with heavy population density of the hosts. Observations indicate that, once the behavior pattern is sufficiently established, it will be maintained in spite of the removal of the dominant animal.