Semi-Closed System
Question 1
there are examples of the disadvantages of a semi-closed system, EXCEPT
expensive
complex management scheme
cannot control volume of water
greater chance of disease
Question 2
what is an example of a fish in a semi-closed system?
Patin
Arona
Yellowfin Tuna
Torpedo Scad
Question 3
what is the common shape of the Raceway method in a semi-closed system?
Circular and Triangular
Circular and Rectangular
Triangular and Rectangular
Question 4
why does the water need to be replaced regularly
some organism are sensitive towards quality of water
unclean water doesn't have good continuous aeration
water is uncleaned due to the food given
Question 5
what happens to this aquaculture method (semi-closed systems) if there are any diseases that are late to detect?
systems will run fine
all organisms alive
some organisms partially survive
the whole thing will destroy
Question 6
these are examples of semi-closed system, EXCEPT
Pond culture
Clams tray
Raceways
Fish fed in cage
Question 7
what are the things that are employed in semi-closed system
pumping water
providing supplemental or continuous aeration
adding commercial feeds
providing nets around the pond
Question 8
these are the characteristics of semi-closed system, EXCEPT
the water is replaced on a regular basis
does not require water to be pumped out of a sea or a lake
most popular method of culture
aims at producing aquatic organisms at densities that exceed those in nature
Question 9
these are the advantages of semi-closed system, EXCEPT
greater control of temperature and water volume
greater production
capital expenses are low
disease can be observed and treated more easily
Question 10
which describe semi-closed fishery?
land based rearing of aquatic species in raceways, tanks and ponds
water exchanged between the culture site and waterways
practice of integrated with crop and animal production