Define Aquaculture: correct answers Controlled cultivation of aquatic organisms selected environments for any commercial, recreational, or public purpose.
3 products of aquaculture correct answers Food
Fun (ornamentals, stock enhance, jewels)
Pharmaceuticals
Percent of worlds protein that comes...
define aquaculture correct answers controlled cultivation of aquatic organisms selected environments for any commercial
or public purpose
Written for
Aquaculture
All documents for this subject (14)
Seller
Follow
Governor001
Content preview
Aquaculture (correct answers)
Define Aquaculture: correct answers Controlled cultivation of aquatic organisms
selected environments for any commercial, recreational, or public purpose.
3 products of aquaculture correct answers Food
Fun (ornamentals, stock enhance, jewels)
Pharmaceuticals
Percent of worlds protein that comes from fisheries correct answers 25%
Fish consumed per person yearly correct answers World: 35-40 lbs per person
USA: 16 lbs per person
Florida: 35-40 lbs per person
World fish supply in 2003 (in tons) correct answers Catches 90 million tons
Aquaculture 42 million tons
Total 133 million tons
**By 2050 200mmt will be needed
#1 country correct answers China 68% (29 million tons)
Main fish importers (2003) correct answers EU $26.2 bill (39%)
Japan $12.4 bill (18.4%)
US $11.6 bill (17.3%)
Most exported species (2003) correct answers Other 29%
Shrimp 19%
Main fish exporter (2003) correct answers EU 34%
Top states. correct answers Mississippi
Arkansas
Florida
USA yearly stats correct answers Per capita consumption of seafood 16 lbs
Production $1.1 billion
Imports $14 billion
Exports $4 billion
Deficit $10 billion (half shrimp)
Species farmed in Florida correct answers Ornamentals $60/70 million
Clams $13 million
Shrimp $5 million
Alligator $2.5 million
Tilapia $1.5 million
Catfish $1.5 million
**Total: $100 million
FL the economy correct answers Tourism
Construction
Agriculture
Top 10 seafood items in US correct answers Shrimp
Tuna
Salmon
Pollock
Catfish
, **Tuna is dropping due to health conerns, Shrimp is rising bc it is cheap, introduction of
Vietnamese catfish (Pangasius) is bringing catfish down.
Types of systems correct answers Ponds
Raceways
Net Pens
Recirculating
What are the three intensity levels of an aquaculture system? correct answers
Extensive, semi-intensive and intensive.
Based on density.
Intensive aquaculture is associated with what? correct answers High density.
High degree of control, high costs, production rates high.
Usually done inside or in close confinement with considerable input($)
Semi-Intensive aquaculture is associated with what? correct answers Food supply
enhanced, intermediate costs, intermediate production
Extensive aquaculture is associated with what? correct answers Low density.
Low degree of control over the environment, low costs, production rates low.
Done outside with minimum inputs (low cost of production).
8 major components of seawater correct answers Ca 2+ calcium
K + potassium
Mg 2+ magnesium
Na + sodium
CO3 2- carbonate
HCO3 - bicarbonate
SO4 2- sulfate
Cl - chlorine
Rivers, lakes and streams correct answers Advantages: large volume, inexpensive
Disadvantages: contaminants, predators, excessive nutrients
Estuaries and coastal oceans correct answers Advantages: large volume, inexpensive
Disadvantages: contaminants, predators, excessive nutrients, biofouling, conflicts with
users
Springs correct answers Advantages: constant temperature, no predators, no
pathogens
Disadvantages: pumping cost if not gravity fed
Wells correct answers Advantages: no predators, no pathogens
Disadvantages: expensive installation, high levels of dissolved gasses (N2, CO2), low
O2
Municipal tap water correct answers Advantages: very high quality, no predators, no
pathogens
Disadvantages: disinfectants (chlorine, long-lasting chlormines), expensive
Watershed (water flowing from surrounding areas) correct answers Advantages:
inexpensive
Disadvantages: contaminents, droughts/floods, 5-7 acre watershed per surface area of
water
Quantity of water needed correct answers 1 Ponds- 15 gallons per minute per acre (3
exchanges per year)
2 Recirculating system- Daily exchange of 10-20% (35-70 exchanges per year)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Governor001. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $20.49. You're not tied to anything after your purchase.
