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Indo-Norwegian project to develop disease-resistant shrimps

By Our Special Correspondent

CHENNAI, JULY 5. An Indo-Norwegian collaborative project to develop shrimps that can genetically resist white spot disease in tiger shrimp (Penaeus monodon) was launched here today.

The project, through selective breeding for growth and white spot disease resistance, will be for three years at a cost of Rs. 1.5 crores.

Talking to newsmen, P. Ravichandran, Director-in-charge of the Central Institute of Brackishwater Aquaculture (CIBA) here, said mother shrimps collected from the wild were potential carriers of ``viral pathogens'', being transmitted to shrimp larvae. Even development of captive brood stock through domestication under highly bio-secure conditions would still be susceptible to the viral disease once they reached the open farm.

On the other hand, genetic improvement of tiger shrimp through selective breeding for resistance to viral diseases leading to production of specific pathogen resistant varieties was the ultimate solution to prevent occurrence of viral diseases.

With this objective, the project was formulated under an agreement between the Indian Council of Agriculture Research and the Institute of Aquaculture Research, Norway, with the CIBA as the implementing agency.

The project, Dr. Ravichandran said, envisaged creation of wide genetic pool of tiger shrimps by collection and cross breeding genetically variable stocks from different parts of the country, selection of resistant families through viral challenge and breeding them to produce shrimp families which were resistant to viral pathogens.

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