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Prawn culture

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Lecture notes of 2 pages for the course Zoology at (Easy to learn.)

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Prawn culture
Most important aquatic crustacean is prawn, which is widely cultured prawn flesh is palatable
and rich and glycogen protein with low fat content.

Types of prawn fishery :
1) Shallow water brown fishery - located on the best to coast restricted to shallow waters.
2) Saline lake prawn fishery - the area of production of prawns are the backwaters seen along
the Western cost, ennur,chilika lake and estuaries of Ganga and Brahmaputra river.
3) Freshwater prawn fishery - prawns are caught from the rivers and lakes throughout India.
4) Marine prawn fishery – Most of the marine prawns are caught along the Indian cost
belonging to the family Penaeidae.

Species of Prawn :
A number of species of Prawn are distributed and water resources such as Penaeus indicus,
Penaeus monodon,Metapenaeus dosboni and Macrobrachium rosenbergii.

Culture of freshwater prawn:
Macrobrachium rosenbergii is commonly seen in river, field and low saline estuaries. The prawn
collected from ponds , river and paddy fields are transferred to the tanks which are aerated. for
fertilization one pair of prawn are kept in the separate tank after mating the eggs are laid.

Spawning tanks of different sizes should be prepared with the proper aeration. Temperature( 24°
C to 30°C) and pH (7-8) should be maintained in the hatching tank. The eggs hatch into first and
second stage larva. Artificial feed is supplied. The young ones of 5cm length can be reared in
fresh or Slightly brackish water ponds and paddy fields. Harvesting of Prawns can be done twice
in a year.

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5
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December 10, 2024
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2024/2025
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