© 2006 International Council for the Exploration of the Sea
Growth of Mytilus galloprovincialis after the Prestige oil spill
Instituto de Investigaciones Marinas CSIC Eduardo Cabello 6, 36208 Vigo, Spain
*Correspondence to M. J. Fernández-Reiriz: tel: +34 986 231930, ext 207; fax: +34 986 292762. e-mail: mjreiriz{at}iim.csic.es.
Growth of mussel Mytilus galloprovincialis using raft culture was investigated for the first cultured generation following the Prestige oil spill off northwestern Spain. Seed from three natural populations along the Galician coastline, Pindo, Miranda, and Redes, was transplanted to a raft culture system in Ría de Ares-Betanzos. The physiological and biochemical status of mussels at the onset of culture and the degree of oil exposure three months after the spill (February 2003) have been described already, but here growth patterns of three populations sampled monthly from seeding to thinning-out (March/August 2003) and from thinning-out to harvest (August 2003/February 2004) were assessed. Mussels from Pindo (the area most affected by the oil spill) showed significantly less growth by weight than the other populations, resulting in a lower yield at harvest. The percentage of mussels classified as "large" in the Pindo population at harvest was also significantly less than that of the other two mussel populations.
Keywords: growth, Mytilus galloprovincialis, Prestige spill, raft culture, sublethal effects
Received 26 September 2005; accepted 22 March 2006.
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