Microbial pathogens infecting Etroplus species and management of pathogens using marine Natural products (MNPs)

Abstract

The common pathogens such as Vibrio infecting pearlspot Etroplus suratensis and E. maculatus were isolated and characterized. The lethal doses of some of the common pathogens were evaluated using E. maculatus. Marine Natural Product was isolated from Ulva fascita using methanol. The crude methanol extract was used as one of the ingredients at different proportions. The growth and disease resistance towards pathogens were evaluated in E. maculatus and E. suratensis, using appropriate experimental and control sets. In the experimental set fed with Marine Natural Products, the percent relative protections (PRP) as well as survival were higher compared to the control sets. The use of Marine Natural Products in enhancing growth and disease resistance were discussed.