Non-specific Defense Activities of Triploid Rainbow Trout.

Abstract

Triploid rainbow trout Oncorhynchus mykiss were compared with diploid trout in complement activity monitored by hemolytic and bactericidal activities, and in neutrophil activity by visual phago cytosis and luminol-dependent chemiluminescence. No significant differences were detected in complement activity and neutrophil activity between diploid and triploid trout. These results indicate that non-specific defense activities of triploid trout are similar to those of diploid trout, and that the triploidy does not fundamentally affect the susceptibility of the fish to diseases.