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Polychaete communities associated with gastropod shells inhabited by the hermit crabs Clibanarius erythropus and Calcinus tubularis from Ibiza, Mediterranean Sea

Published online by Cambridge University Press:  12 January 2006

Andreas Bick
Affiliation:
Universität Rostock, Institut für Biowissenschaften, Allgemeine und Spezielle Zoologie, Universitätsplatz 2, D-18051 Rostock, Federal Republic of Germany, andreas.bick@uni-rostock.de
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Abstract

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Shells inhabited by hermit crabs are unique microhabitats with an abundant epi- and endofauna. Using polychaetes as an example, communities associated with the whelk Stramonita haemastoma, the hermit crabs Clibanarius erythropus and Calcinus tubularis, as well as empty, damaged shells were investigated. No polychaete community was associated with live S. haemastoma: only 30% of the investigated gastropods harboured polychaetes. Hermit crab-occupied shells supported polychaete communities dominated by Spirorbidae in the case of Clibanarius erythropus and by small Sabellidae, Spirobranchus polytrema and Dipolydora armata in Calcinus tubularis. The polychaete fauna associated with empty shells was similar to that on shells previously inhabited by one of the hermit crab species but different from those of the surrounding hard bottom. The reproductive strategy of the some polychaetes species is adapted to life on this small-sized habitat.

Type
Research Article
Copyright
2006 Marine Biological Association of the United Kingdom