1 23 Aquaculture International Journal of the European Aquaculture Society ISSN 0967-6120 Aquacult Int DOI 10.1007/s10499-014-9842-y Tissue targeting of the European flat oyster, Ostrea edulis, using microencapsulated microbeads as a biological proxy G. Darmody, A. P. Maloy, S. A. Lynch, M. Prado-Alvarez, J. Cotterill, T. Wontner-Smith & S. C. Culloty