Aquaculture Industry Overview

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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?

Fry Signup and view all the answers

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

Aquaculture Signup and view all the answers

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

Aquaculture Signup and view all the answers

What dominates production almost exclusively in Scotland?

Atlantic almon (Salmo salar) Signup and view all the answers

Which country is a world leader in the aquaculture industry?

Scotland Signup and view all the answers

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

'Feed Conversion Ratio' Signup and view all the answers

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

'Alevin' Signup and view all the answers

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

Smolt Signup and view all the answers

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

Adult Signup and view all the answers

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

Feed conversion ratio Signup and view all the answers

At what stage do fish undergo smoltification?

When they reach 5-10cm in length Signup and view all the answers

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

It accelerates smoltification Signup and view all the answers

What does 'degree days' represent in fish farming?

Number of days to reach a specific developmental stage Signup and view all the answers

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

500 °D Signup and view all the answers

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

'Dead egg' removal Signup and view all the answers

What triggers smoltification in fish?

Decreasing daylength following winter Signup and view all the answers

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

Enzyme assay and blood sample for plasma Cl- levels Signup and view all the answers

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

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

What are triploid fish and their significance in aquaculture?

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

How are triploid fish achieved?

By heat or pressure shocking fertilized eggs Signup and view all the answers