Mariculture Flashcards
Where does most aquaculture occur?
Asia
What is aquaculture?
cultivation of populations of aquatic organisms under controlled conditions
Why are Tilapia a solution?
fresh water fish that feed on algae and are highly productive
How much tuna is thought to be caught illegally?
35%
What is the problem with fishing carnivorous species?
They need lots of protein to get up to the right size
Where are the 2 main areas of tuna spawning?
Gulf of Mexico and Mediterranean
How does farming and fattening work?
Fed 1-3 times to a day 15-20:1 ratio. Size to buy
Examples of aquaculture on a local scale?
Duchy mussels and oysters
What kind of fish used to be most common?
Omnivorous-herbivorous species in freshwater habitats
What is the Mediterranean biomass of tuna?
35% of what it should be
What are environmental concerns of aquaculture?
Illegal, unregulated and unreported Large amounts of organic waste Oxygen depletion in local ecosystems Pressure on baitfish
What kind of fish are now most common?
Carnivorous species in marine habitats
What is mariculture?
Aquaculture in the sea
Examples of mariculture?
Fish farming in sea cages Farming mussels on ropes Farming oysters in cages Freshwater marine shrimps in ponds Seaweed farming
Environmental risks of marine aquaculture?
Seabirds taking fish out of sea pens Introduction of non-native species incubation Fish sewage Antibiotic hormones Escape of non-native species
