Thus, the study suggests no significant effect of gamma treatment (up to 10 kGy) on the structural and mechanical quality of the prawns. The resultant effect of the 20 kG (M. rosenbergii-shear force: 34.2 N, toughness: 0.86 Nm, cohesiveness: 0.27; P. monodon shear force: 37.7 N, toughness: 0.96 Nm, cohesiveness: 0.37) was similar with the control and lower doses.