Biomolecules as energy source during salinity acclimation and pathogenic infected the PLs of Penaeus monodon

Abstract

The tiger shrimp P. monodon, is the major species cultured in worldwide. It is the largest, fastest growing species compare to other penaeid shrimp s, it has high protein content and taste, due to this reason it has high market demand.The culture of P. monodon in sea water (30 ppt) may cause disease problems, particularly white spot or vibriosis, because of this problem shrimp farmers keep moving towards sea water to freshwater environment. During salinity adaptation, energy-demanding mechanisms for hemolymph osmotic and ionic regulation are activated. Thus, the main goal of present research work is to identify the possible involvement of biomolecules as an energy source in the osmotic adaptation process and the pathogenic infected shrimps. Results shows that Gill and muscle biomolecules were significantly higher in 30 ppt and reduced in fresh water (0 ppt) salinity levels. Similarly, we observed that PLs were acclimated to low saline water, diseases cannot spread in freshwater conditions. Our studies represents biomolecule levels gradually decreased from high salinity to low salinity stress levels and also pathogenic infected shrimps.