期刊
MARINE POLLUTION BULLETIN
卷 138, 期 -, 页码 312-321出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2018.11.032
关键词
Ostrea edulis; Oyster; Keystone species; Settlement; Conservation; Restoration
资金
- Nesbit Cleland Trust (St Abbs Marine Station)
- Royal Haskoning DHV
- Scottish Natural Heritage
- Dornoch Environmental Enhancement Project (DEEP)
- Heriot-Watt University
- Marine Conservation Society
- Glenmorangie Whisky Company [A15R10520]
- MASTS pooling initiative (the Marine Alliance for Science and Technology for Scotland) by Scottish Funding Council, United Kingdom [HR09011]
- MASTS PECRE grant
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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