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WorksheetsAquaculture and Fish Stocks Quiz
Total questions: 20
Worksheet time: 10mins
What percentage of the world's fish stocks are overfished according to the FAO's 2024 report?
34%
20%
50%
60%
What is a fisheries collapse?
When fish stocks are at maximum sustainable levels
When a fish population drops to less than 10% of its original levels
When fish stocks are overfished by 50%
When fish stocks are fully recovered
Which of the following is a characteristic of closed aquaculture systems?
They have no control over the environment
They are land-based using tanks and ponds
They use cages and nets
They are ocean-based
Which of the following is NOT a type of ocean/open water-based aquaculture?
Open sea-cage systems
Land-based tanks
Cages and nets for fish
Longlines for bivalves
What is one negative environmental impact of aquaculture practices?
Increased biodiversity
Nutrient accumulation leading to algal blooms
Improved water quality
Decreased disease transmission
Which of the following is a solution to improve aquaculture sustainability?
Reducing technological innovation
Decreasing regulatory frameworks
Increasing antibiotic use
Sustainable feed development
What is the primary food source for extensive aquaculture systems?
Processed fish meal
Supplementary feeding
Artificial nutrients
Natural food sources in the environment
What is a major problem faced by intensive aquaculture systems?
Low production costs
Abundant infrastructure
High production costs
Easy market access
What is the purpose of aquaculture development zones?
To increase the complexity of regulations
To eliminate the need for aquaculture licenses
To restrict aquaculture activities
To provide 'investment-ready' areas with strategic approvals
Which act regulates biosecurity measures in Western Australia?
Environmental Protection Act 1986
Biosecurity and Agriculture Management Act 2007
Fisheries Management Act 1991
Fish Resources Management Act 1994
What is a common method to reduce the environmental impact of aquaculture?
Increasing fish stocking density
Implementing integrated multi-trophic aquaculture
Using more chemical fertilizers
Reducing water filtration systems
Which of the following is a benefit of recirculating aquaculture systems?
Limited species diversity
Higher water usage
Increased waste production
Better control over water quality
What is a key challenge in the development of offshore aquaculture?
High operational costs
Minimal environmental regulations
Abundant space availability
Low market demand
What is a potential benefit of using genetically improved fish strains in aquaculture?
Reduced water quality
Higher growth rates
Increased disease susceptibility
Lower feed efficiency
Which of the following is a method to prevent disease outbreaks in aquaculture systems?
Increasing feed waste
Overcrowding fish tanks
Regular water quality monitoring
Reducing oxygen levels
What is a common challenge associated with open water aquaculture?
Low exposure to natural predators
Escapes of farmed species into the wild
High control over environmental conditions
Limited access to natural resources
Which factor is crucial for the success of aquaponics systems?
Exclusive focus on fish production
Balanced fish and plant production
High chemical fertilizer use
Minimal water circulation
What is a common environmental concern associated with shrimp farming?
Improved coastal biodiversity
Decreased nutrient runoff
Increased mangrove deforestation
Enhanced water quality
What is a common method to enhance fish welfare in aquaculture?
Reducing water quality
Providing environmental enrichment
Increasing stocking density
Using more antibiotics
What is a significant challenge in the management of aquaculture waste?
Minimal environmental impact
Low nutrient content
High biodegradability
Accumulation of organic matter
