Bio Resources: Aquaculture examples

A Level Environmental Science revision

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Last updated: June 1, 2025

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Hint	Answer
Oysters food	Filter feed planktonic organisms
Oyster ___ is ______ on the ______ where they can grow	Spat, spaced, seabed
Predator removal	Crabs
Extensive shrimp aquaculture	Lagoons with natural plankton
Intensive shrimp aquaculture controls	Aeration
Intensive shrimp aquaculture controls	Water exchange
Intensive shrimp aquaculture controls	Food pellets
Intensive shrimp aquaculture controls	Inorganic nutrients
Intensive shrimp aquaculture controls	Eyestalk ablation
Eyestalk ablation simulates...	Low light levels
Eyestalk ablation increases...	Ovary development
Eyestalk ablation increases...	Egg production
Salmon breeding controls	Stripped of roe and milt
Salmon breeding controls	Fertilised eggs raised in freshwater tanks
Smolt age	12-18 months
Salmon oxygen controls	Low temperatures
Salmon oxygen controls	Cooler climates
Salmon oxygen controls	Water sprays
Salmon oxygen controls	Weirs
Salmon light controls	Controlled to induce smoltification
Salmon water controls	High to produce muscular fish
Salmon water controls	Constant direction in circular tanks
Salmon pest controls	Removal of diseased fish
Salmon pest controls	Removal of predators
Salmon pest controls	Selective antibiotics
Salmon pest controls	Selective pesticides
Salmon food controls	Fishmeal pellets

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