(GS PAPER-3, ECOLOGY
SOURCE- THE HINDU)
The Central Institute of Brackish Aquaculture which is located in Chennai has recently developed an indigenous vaccine for Viral Nervous Necrosis. The name given to the vaccine is Nodavac-R
What is Viral Nervous Necrosis-
- The cause of the disease is Betanodavirus which mostly affects teleost fish. More than forty species of fish are affected by this virus and most of them are marine species.
- This virus transmits through passive diffusion and contact.
- The disease is mostly occurring in juveniles or larvae. However, it also affects adults.
Viral Nervous Necrosis in India-
The disease has been a serious concern affecting freshwater, marine and brackish water fishes largely in India. It results in 100% mortality in fishes that are in juvenile and larval stages.
The best approach to control the disease in India is to vaccinate adult fish and also their fingerlings. The Nodavac-R is safe for all species that are susceptible to Viral Nervous Necrosis.