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Crustacean Fisheries Division (CFD)

Seed Production
Experimental Farming
Tagging of Prawns

2.2 million hatchery produced postlarvae of the green tiger prawn Penaeus semisulcatus were searanched in the Gulf of Mannar.
Experimental farming of Penaeus monodon yielded 1051 kg of shrimps with an FCR ranging from 1.59 to 1.77.
Induced maturation and breeding of P. monodon by artificial insemination technology is standardised.
Third generation of P. monodon seeds is produced from domesticated broodstock.

Backyard shrimp hatchery at CMFRI, Mandapam

Larval rearing tanks

Post larvae of Penaeus semisulcatus produced at Mandapam hatchery

A view of harvested P.semisulcatus cultured at Mandapam shrimp farm

Tagging & Sea Ranching

Method of tagging

A view of Tagged P. semisulcatus

Sea ranching of tagged shrimps

Seed Production
Broodstock Development
Farming & Sea Ranching of Spiny & sand Lobsters

Successful maturation and breeding of the spiny lobster Panulirus homarus was achieved by regulation of light intensity (500 lux) and on feeding with green mussel
Fecundity, egg quality and percent hatch of captive lobsters is higher than broodstock obtained from the wild. Feeding phyllosoma larvae with Artemia nauplii hatched out from infected cysts leads to protozoan infestation. Treatment of cysts with chlorine at 200 ppm for 10 minutes keeps the larvae free from infection.
Delay in feeding of phyllosoma larvae by 24 hrs. after hatching may result in delayed moulting and low survival.
Short term fattening of lower priced smaller grade lobster to a higher priced larger grade is profitable

Cultured lobsters

Phyllosoma larvae of lobster

Puerulii of spiny lobster Panulirus polyphagus

Post puerulii of the lobster P. polyphagus

Lobster culture tanks view from the lobster hatchery at Calicut

Mariculture of crabs
Scylla tranquebarica seeds have been successfully produced in the hatchery. Seeds are grown in captive condition for domestication and controlled reproduction. Portunus pelagicus have been searanched.
Experimental farming using hatchery produced seeds of P. pelagicus yielded encouraging results. Crabs attained 100-120 g in 135 days with a survival of 33%.

Mud crabs after fattening

Scylla tranquebarica

Baby crab of Portunus pelagicus

S.No Name Designation Area of work
1 Dr.E.V.Radhakrishnan Principal Scientist & Head of Division Crustacean Fisheries Mariculture
2 Dr.G.Nandakumar Principal Scientist Crustacean Fisheries Mariculture
4 Dr.Mary K. Manissery Principal Scientist Crustacean Fisheries Mariculture
5 Dr.A.Laxminarayana Principal Scientist Crustacean Fisheries Mariculture
6 Ms.Josileen Jose Scientist (SS) Crustacean Fisheries Mariculture