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Volume 3 Issue 8, August 2022

Marine resources for aquaculture

Salmon aquaculture is projected to grow by 2–3% per year to meet the increasing demand for aquatic foods. Wild-caught, marine-derived resources in the form of fish meal and fish oil are key sources of protein and lipids in salmon aquafeed formulations, but with wild fish stocks stagnating, this resource presents a limiting factor for future sector growth. Global salmon production potential was modelled, incorporating a 1–3% growth rate and exploring a variety of fish oil and fish meal utilization scenarios. Incorporating 3% fish oil and 3% fish meal in aquafeed could permit 2% per year production growth until 2100 — independent of novel aquaculture feeds that are currently being utilized.

Aquatic foods, such as salmon, form an important dietary source of long-chain omega-3 fatty acids. Based on these findings, 300 grams of salmon per week would provide almost all the recommended weekly intake of eicosapentaenoic acid and docosahexaenoic acid — demonstrating that finite marine resources, when used judiciously, can contribute to salmon aquaculture sector growth and healthy diets.

See Rocker et al.

Image: Marc Guitard/Moment/Getty. Cover Design: Tulsi Voralia.


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Comment & Opinion

  • Few microbiome-based solutions for agricultural productivity, food processing and human nutrition have been successfully commercialized. A systems-based approach that considers the ecology of microbial communities may help finetune extant tools to increase their reliability while promoting innovation and greater adoption.

    • Stephanie D. Jurburg
    • Nico Eisenhauer
    • Brajesh K. Singh
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Research Highlights

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News & Views

  • Nuclear weapons obliterate targets. The soot ejected into the stratosphere spreads, changing global weather patterns. When weapons are especially high yielding, the resultant soot could trigger global famine.

    • Deepak K. Ray
    News & Views
  • The discovery of a natural variation in an ancient rice variety shows the way to reduce the harmful element cadmium in a key food without sacrificing yield and concentrations of other essential nutrients.

    • Steve P. McGrath
    News & Views
  • Simulation studies can provide valuable input to governance actors when choosing which measures to adopt in the pursuit of food security. However, such studies often neglect spillover effects and rarely simulate the targeted nature of governance interventions or factor in value-chain dynamics.

    • Aogán Delaney
    News & Views
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Research Briefings

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  • Conventional nitrogen fertilizers are costly for human and environmental health. This Perspective discusses barriers and opportunities in designing enhanced-efficiency fertilizers and incorporating these alternative technologies into policy- and decision-making.

    • Shu Kee Lam
    • Uta Wille
    • Deli Chen
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Amendments & Corrections

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