What happens to the Moulted shells in shrimp pond?

Hello everyone:
  Today we will see some intresting topic. Anyone think about this? What happens to the Moulted shells and what reaction happens inside the shrimp pond.

Some interesting things happens.... Come on lets jump into the topic......

Exoskeleton:
      Shrimp is a crustacean which have exoskeleton for an protective cover of the body. It gives protection to the shrimp from disease and predations etc..

Shrimp have a moulting cycle. It occurs on the interval based on the body weight of the Shrimp.
In early stages moulting happens daily. 

Composition:
 The exoskeleton of the shrimp mainly consist of chitin and minerals. Chitin is a aminosugar compound(modified polysaccharide) which means it majorly contains carbohydrates and some nitrogen compounds. 

Many of people thinks , chitin is a protein but it is not right.

The major minerals present in the shell is calcium, phosphorous and also sodium, zinc , carbonates also present in the shell.

After moulting:
 After moulting the shells moves into the bottom and does not floats on the surface. The shells have some more density than water. Two main reaction happens in the pond environment,

Deproteinization and Demineralization (which means removal of protein and mineral.)
Chitin is the majorly decomposed by heterotrophic bacteria in the pond bottom. Some species like Pseusomonas, Bacilus, Flavobacterium etc. These microbes can use chitin for the growth.

                       Chitinolytic bacteria

                         Chitinase enzyme

                       Breakdown of chitin

                   Used as a energy source

How?
    Microbes uses carbon source from the chitin as the energy source. The remaining nitrogen also used for the energy source of beneficial bacteria. It is very intresting ,
Exoskeleton plays one of the important role in maintaining carbon and nitrogen source in pond ecosystem. Yes, but many of people don't know about this.

By the Demineralization process, minerals from the shells also released to the pond.
Some other chitinolytic bacterias like Aeromonas, streptomyces, Bacillus also have an capability of chitin disintegration. Some of these bacteria can lives both in aerobic and anaerobic conditions.

Some enzymes from zooplankton and fungi also have the capability of degrade this shells. I think now you understand the importance of microbial colonies in pond ecosystem. If your pond have huge sludge and organic matters means it refers to improper management of beneficial microbial colonies in the pond ecosystem. So pls use probiotics to your culture system for better management.
                                    Thank you.

Contact: dhivagarfcri2000@gmail.com
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Comments

  1. Unknown8 January 2022 at 18:44

    Sir..
    Is Shrimp eats its shell or these shells completely disintegrated by bacteria only. ?

    ReplyDelete

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