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A cleaning association between the oceanic crab Planes minutus and the loggerhead sea turtle Caretta caretta

Published online by Cambridge University Press:  11 May 2009

John Davenport
Affiliation:
University Marine Biological Station, Millport, Isle of Cumbrae, Scotland, KA28 OEG

Abstract

Columbus crabs, Planes minutus (L.) (Crustacea: Brachyura) are often found on the postero-ventral surfaces of sea turtles, particularly the loggerhead Caretta caretta (L.) (Testudines: Cheloniidae). There has been a general acceptance of a hypothesis that the crabs feed upon turtle faeces. However, evidence is presented here to demonstrate that Planes has a ‘cleaning’ role, feeding on other epibionts (e.g. barnacle cyprids, parasitic amphipods) during daylight hours. At night it is likely that the crabs feed on neustonic animals (e.g. euphausids). The species is also cannibalistic.

Type
Short Communications
Copyright
Copyright © Marine Biological Association of the United Kingdom 1994

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