Tuesday, 29 December 2015

Moulting of prawns

The Moulting can happen frequently during young season. After they grown up it will happen lately.  Moulting does not happen according to the table, Moulting can be assigned too many factors and the important thing is their growth and feeding.

During the grown up season it partly makes the growth. After, if we didn’t remove the upper shell it comes to the state that the growth is not possible. The body which is covered by the shell will be split directly towards bottom of the body. In further, like the juveniles can be exited out from an egg. In shell “Barer” prawn will be exited out. This state can be seems like the peeling of fruits. In this state it is not safety for the prawns which is removed by the shell. It won’t see this belong to their siblings or it is the reason for their birth. It won’t see their child they just have and solve their hunger. This nature is common for all the species of prawns it is the devilishness for their breeding species.
     
The decrease of prawn stock and survival rate is the sufficient reason for the removal of shell.  To avoid these kinds of risks and to rectify from it the removal of upper shell prawns will always find their safety and to protect themselves they will hide in mud.  The good work can be done by the process of the old shell will be removed and the new shell will be appeared.  The appearance of new shell speed and then the assurance, then the situation is needed to be present in calcium mineral.

Particularly in one prawn continuously the removal of shell can be saved one by one, we have to keep it in a straight line order to see the growth of prawns we can easily find out.

Generally in one state of growth it attains the specific growth it absorbs the water and it started as a big.  Due to this pressure it will continued to absorb the water and the prawns becomes big.  In this state the weight of old prawns after the shell removed it will be weighed when compared these two weights the weight can be increased more due to removing of shell.  After that the water level can be added to the body and the feeding will create a flesh to the body.

Creating flesh from the feeding food is called as “Flesh changing ability” this ability can be seen more in prawns. Commonly from the food of (M.Topsoni) it will get more power.  The ratio of feeding food will be 80 18.  In this the flesh which can be added to the body in the ratio of 38.79 for Moulting the ratio will be 0.6 and the activity of the ratio will be 40.79 and the digestion of food and exit out the waste is in ratio 9.82.

In a small period of time the prawns can be stayed in brackish water spread.  The white prawns will get more growth is about 80mm.   Like this we can see some more prawn species growth it can be seen below

Prawns species
Growth  & Growth period
(In mm)                 (In month)
 Species maturity


 M.Topsoni
50
5
M.Ahyphinous
404
M.Manosiros
85
10
 M.Manodon
160-70
6




After getting the particular growth the male and female prawns will attain the state of maturity.   In white prawns the female length will be grown to 130mm, in one year it will attain the maturity.   Due to the high temperature, species maturity and breeding can be done.

Getting maximum food size, high water salty are the reasons for the bottom of upper sea water level that can make in this the temperature is the important reason.  Majority of the research result has said that the breeding can happen during the high temperature at 28-30cm.  When during the stage of young juveniles enter in to the water mouth in the way of brackish river water when it attains the stage of maturity. It will get into the sea for the process of breeding.  The clean water, high salt ability, the preferential of bottom level water is the situation of the breeding can be processed.

Their breeding can happen in Cochin from October to September then too in March.  In Chennai part it will start during monsoon seasons from February to May and it will extend from September to December. Commonly in most part of the countries breeding season will be different.  Though, the year in our country some regions of the white prawn juveniles will be seen more.  Today it seems to be similar to the mussels breeding. In natural situation unknowingly we have to check up and grown up in our condition.  Naturally will get juveniles in the basic season can be strongly said as “Shade of truth”.  The white prawns during their life span the breeding will be happen at 5 times and it said to be the modesty in condition.

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