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Sustainable Aquaculture Center at California State University

Explore research on integrating red algae into abalone aquaculture in California for enhanced sustainability and economic impact. Learn about the role of seaweeds in natural systems and the potential of aquaculture in the state. Stay informed on innovative practices at Monterey Abalone Company and how seaweeds can transform aquaculture diets.

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Sustainable Aquaculture Center at California State University

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  1. Center for Aquaculture at the California State University: Research, Education and Entrepreneurship Dr. Michael H. Graham • Professor, Marine Ecology, Moss Landing Marine Laboratories • Executive Director, Center for Aquaculture, Moss Landing Marine Laboratories • President, Sustainable Seaculture Technologies, LLC

  2. Why do we need a Center for Aquaculture? Million tons

  3. Building infrastructure for a sustainable aquaculture industry in California CSU: 23 campuses 460,000 students 48,000 faculty/staff

  4. What’s the potential for sustainable aquaculture in California? China Chile Japan Canada

  5. The economy of nature What is the role of seaweeds in the flow of carbon and nitrogen through natural systems? A giant kelp forest food web from Graham (2004)

  6. Key to sustainable resource use aquaculture • Nexus of: • environment • society • economy $

  7. Monterey Abalone Company • sea-based farm, produces live red abalone • white tablecloth clientele • Seafood Watch “best choice”

  8. Monterey Abalone Company • hand-harvest kelp • (5 tons weekly) • quality seed stock • minimal impact farm • environmental monitoring

  9. Can seaweeds enhance the sustainability of abalone aquaculture? • all-kelp diet leaves red abalone with “non-red” shell • kelp must be harvested fresh weekly • weather and restrictions makes winter harvesting difficult • current diet results in 2-3 year grow out before market farmed abalone wild abalone

  10. Integration of farmed red algae into abalone aquaculture • funded by NOAA/California Seagrant • sea-based farming of Gracilariopsis andersonii • abalone feeding experiment

  11. Characteristics of red algal farm in Monterey Harbor • Gracilariopsis andersonii successfully cultured through cuttings • ave. growth = 11% per day; max. growth = 23% per day • biomass doubles every 7-10 days • harvested biomass can be used to reseed farm

  12. Integration of red algae into farmed abalone diet • 1-year feeding study with 40,000 abalone • increased health and vigor with mixed diet • 25% increase in abalone growth with 5% red algae • increased shell pigmentation with 2.5% red algae farmed abalone wild abalone

  13. Integration of red algae into farmed abalone diet • 1-year feeding study with 40,000 abalone • increased health and vigor with mixed diet • 25% increase in abalone growth with 5% red algae • increased shell pigmentation with 2.5% red algae “super abs”

  14. Integration of red algae into farmed abalone diet • 80% of connoisseurs chose “super abs” for flavor and texture Pacific Edge Chef Mark Ayers

  15. What type of aquaculture does California need? Want?

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