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Conservation and restoration of a keystone species: understanding the settlement preferences of the European oyster (Ostrea edulis)

Research output: Contribution to journalArticle

Author(s)

Ana Rodriguez-Perez, Mark James, David W. Donnan, Theodore B. Henry, Lene Friis Møller, William G. Sanderson

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Abstract

The European oyster Ostrea edulis is a keystone species that is internationally recognised as ‘threatened and declining’ in the NE Atlantic by OSPAR and several nations have consequently adopted strategies for its conservation and restoration. Understanding the settlement behaviour of O. edulis larvae is crucial to inform these strategies. We compared the efficiency of several treatments in triggering settlement. The most effective settlement occurred with the presence of conspecifics: 100% settled in <23 h. Marine stones with habitat-associated biofilms induced 81% settlement that started after a 45 h delay. Sterile shells and terrestrial stones did not induce more settlement than control treatments. These results indicate that O. edulis larvae are gregarious and finely-tuned to settle in response to cues which are indicative of their adult habitat requirements. The role of chemical cues in mediating settlement, and the importance of this to restoration, are discussed.

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Original languageEnglish
Pages (from-to)312-321
Number of pages10
JournalMarine Pollution Bulletin
Volume138
Early online date27 Nov 2018
DOIs
Publication statusPublished - Jan 2019

    Research areas

  • Oyster, Keystone species, Settlement, Conservation, Restoration

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