Aquaculture Industry Overview
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Questions and Answers

What is the main driving factor towards the sustainability of farmed fish?

  • High stocking densities
  • Large-scale production
  • Low feed conversion ratios (correct)
  • Intensive energy use
  • Which country is the largest producer of farmed fish by a significant margin?

  • Norway (correct)
  • Scotland
  • Chile
  • USA
  • What is the UK's biggest fresh food export?

  • Atlantic salmon (correct)
  • Poultry
  • Eggs
  • Alevin
  • Which stage comes after 'Alevin' in the lifecycle of fish?

    <p>Fry</p> Signup and view all the answers

    What industry makes up almost half of global seafood production in 2020?

    <p>Aquaculture</p> Signup and view all the answers

    Which type of production works on a completely different scale to any other food production system, except poultry?

    <p>Aquaculture</p> Signup and view all the answers

    What dominates production almost exclusively in Scotland?

    <p>Atlantic almon (Salmo salar)</p> Signup and view all the answers

    Which country is a world leader in the aquaculture industry?

    <p>Scotland</p> Signup and view all the answers

    What does 'FCR' stand for in the context of farmed fish?

    <p>'Feed Conversion Ratio'</p> Signup and view all the answers

    'Egg' is followed by which stage in the lifecycle of fish?

    <p>'Alevin'</p> Signup and view all the answers

    'Parr' is followed by which stage in the lifecycle of fish?

    <p>Smolt</p> Signup and view all the answers

    'Smolt' is followed by which stage in the lifecycle of fish?

    <p>Adult</p> Signup and view all the answers

    What factor is crucial for the sustainability of farmed fish production?

    <p>Feed conversion ratio</p> Signup and view all the answers

    At what stage do fish undergo smoltification?

    <p>When they reach 5-10cm in length</p> Signup and view all the answers

    What is the significance of altering light and photoperiod in fish farming?

    <p>It accelerates smoltification</p> Signup and view all the answers

    What does 'degree days' represent in fish farming?

    <p>Number of days to reach a specific developmental stage</p> Signup and view all the answers

    What is the statutory minimum withdrawal of antibiotics in fish farming?

    <p>500 °D</p> Signup and view all the answers

    What is a key aspect of hatcheries in fish production units?

    <p>'Dead egg' removal</p> Signup and view all the answers

    What triggers smoltification in fish?

    <p>Decreasing daylength following winter</p> Signup and view all the answers

    How are smolts tested to determine their readiness for sea transfer?

    <p>Enzyme assay and blood sample for plasma Cl- levels</p> Signup and view all the answers

    What are the main changes that occur as part of smoltification?

    <p>Chloride (CL-) cell proliferation and molecular isoform changes alpha to beta</p> Signup and view all the answers

    What are triploid fish and their significance in aquaculture?

    <p>They have 3 full sets of chromosomes, are entirely sterile, and experience higher susceptibility to disease</p> Signup and view all the answers

    How are triploid fish achieved?

    <p>By heat or pressure shocking fertilized eggs</p> Signup and view all the answers

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