LIFE ON oxygen Shrimp.
Seen from the amount, oxygen dissolved is one type of gas dissolved in water in the second after Nitrogen. However, if you see the importance for the life of fish and shrimp, Oxygen ranks the top.
Oxygen that is necessary for the shrimp should be breathing in the form of dissolved in the water, because the shrimp can not take advantage of Oxygen from the air.
The main source of Oxygen in water is the result of diffusion from the air, brought through presipitasi (rain water) and the results of photosynthesis fitoplankton.
Conversely, the content of oxygen in the water can be reduced because of the activity and respiration revamp organic materials. Lack of Oxygen can be experienced as a result of obstruction of diffusion because salinity stratification that can occur after heavy rain.
The amount of oxygen content in water can be stated with absolute concentration (ppm) or with the concentration of relatively (percent saturated). The concentration of the oxygen saturation is in terlamt water during the phase of the water in the air and poise.
Oxygen content of the optimum value for the life of shrimp> 5 ppm approximately 100% saturated.
At the concentration of large, the pressure difference that allows partial penetration of oxygen to the blood vessels through lamela-lamela gills and then tied and used by haemocyanin in the blood vessel shrimp.
At the concentration is too low, parsialnya pressure not afford to allow the penetration of oxygen, so the shrimp can suffocate because of difficulty breathing. Symptoms seen with the shrimp swim is not uniform in surface water. Excessive concentration can lead to death with the occurrence of embolism in blood vessels due to too many air bubbles (gas Bubble disease).
Through the saturated concentration can occur in the ponds, ponds that are too fertile and fitoplankton grow too densely. This condition can occur after noon, namely through photosynthesis activity fitoplankton produces Oxygen with reaction
as follows:
Khlorophil
6 CO2 + 6H2 O ------> C6H12O6 + 6O2
Ultra violet
(sun)
Oxygen Diffusion only happen quickly in the surface layer of water, while in the layer underneath, in fact, live shrimp, diffusion running very slow. To help the distribution of Oxygen to the layer below, the necessary equipment Aeration can be a blower, waterwheel (paddle wheel), O-aire or the other two.
Function Aeration equipment, other than the Oxygen can accelerate the diffusion and distribution to the layer below, can also help to release the Oxygen in the atmosphere through the saturated conditions.
SOURCE: Ir. Sri Umiyati Sumeru
Dra. Suzy Anna
