Approximately 100% survivability of P. monodon was obtained on feeding with 1% aqueous extract of C. tagal at 500 mg/kg of body weight/day[11]. Virucidal property of the aqueous extracts of R. mucronata, Sonneratia sp. and C. tagal when administered along with WSSV suspension in 1:1 ratio after incubation for 3 h at 25 °C suggested the presence of molecules in the preparation which could inactivate the virus. In a similar pattern, preincubation of WSSV with a synthetic antibacterial peptide from Mytillus galloprovincialis reduced mortality due to WSSV in Palaemonid shrimp Palaemon sp[45]. They suggested that this might be due to contact of virus with mytilin before injection into shrimp. PCR analysis showed that the surviving animals were not accommodating the viral DNA.