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IEO-CSIC Launches Yearlong VOLARIA Study as Vigo Scallop Sampling Begins

Time-series sampling with isotope forensics will pinpoint lead sources in volandeira to support health decisions.

Overview

  • Monthly sampling of volandeira started on February 23 and will run for one year to track lead levels through the reproductive cycle.
  • Researchers plan an intensive size-range survey in February and a May campaign collecting sediments and specimens for stable isotope source attribution.
  • Weekly water sampling has been underway since January, complemented by metal-accumulator sensors installed on bateas for year-round monitoring.
  • Scientists are testing whether species-specific physiology that stores lead in renal granules, combined with legacy industrial pollution, explains the elevated levels seen in Vigo but not in other bivalves.
  • The project is led by IEO-CSIC with IIM-CSIC, INTECMAR and Universidade de Vigo, financed by the Xunta with 70% co-funding from the EU’s FEMPA, and executed in close collaboration with local fishing cofradías to support a potential reopening of the fishery.