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5th Euro-Global Summit on Aquaculture & Fisheries

Madrid, Spain

Luis Lagos

Luis Lagos

AZTI
Spain

Title: Experimental advances in shellfish offshore zone production in Basque Country (SE Bay of Biscay)

Biography

Biography: Luis Lagos

Abstract

The Basque Government expressed the need of the establishment of an offshore zone for the expansion of aquaculture production in the Basque Country (Aquaculture Development Strategic Plan 2014-2020). For that, AZTI made the site selection as well as the oceanographic and microbiological, sanitary characterization and monitoring for the declaration of a “Shellfish Zone Production” (SZP). The offshore SZP has the minimum requisites to assert; among others:

  • The existing environmental and regulatory compliance. According to the measurement of organic and metal elements concentration, shellfish culture is enabled at SZP. In addition, according to the microbiological data, the produced shellfish does not require depuration for commercialization.
  • Good Oceanographic conditions. (T = 11.5-23.5 ºC; current    speed = 18. 7 ± 4.6 cm seg-1; wave high = 2± 1.4 m; Salinity = 33-35.8 PSU); chlorophyll “a” concentration = 0-10 µg L-1 with dominance of diatoms during blooms.
  • The design and validation of strength of submerged longline structures proposed for use in ZPM open waters (image 1). The culture technology chosen is described. The shellfish culture model of SZP exerts low impact over the marine ecosystem.
  • Good culture conditions (growth and survival of experimentally cultured species). The aquaculture performance of mussel Mytilus galloprovincialis reveals that the growth patterns (daily specific rates (%), length = 0.32; shell weight = 0.82-0.84; Dry meat weight = 0.95-1.00) are similar to those observed in others productions sites in Spain and Europe.
  • The minimum conflicts with fishing activity and other maritime sectors. The SZP is an example for development of offshore aquaculture in Atlantic arc and Maritime spatial planning.

The research leading to these results has been undertaken as part of the AquaSpace project (Ecosystem Approach to making Space for Aquaculture, http://aquaspace-h2020.eu) and has received funding from the European Union's Horizon 2020 Framework Programme for Research and Innovation under grant agreement n° 633476.