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The ethology of Crenilabrus melanocercus, with Notes on cleaning symbiosis

Published online by Cambridge University Press:  11 May 2009

Geoffrey W. Potts
Affiliation:
Department of Zoology, Queen Mary College, London, E. I1

Extract

Off the coasts of the Eastern Aegean Island of Chios underwater observations were made on the labrid Crenilabrus (= Symphodus) ntelanocercus (Risso).

It was found that undisturbed observation could be made from 4 to 5 m away from the fish's territory, but if closer, then diver-orientated behaviour occurred. The fish might inspect the diver, or if alarmed, show fright reactions of different intensities. Conflict situations for the fish sometimes resulted in displacement chaffing. Pursuit caused the fish to show a series of escape reactions depending upon the intensity and persistence of the pursuit. Initially the fish showed avoidance reactions by fleeing or following set ‘escape routes’; further pursuit caused it to hide among the eel-grass, Posidonia; and finally aggregation and flight were resorted to.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1968

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