New Trends in Control of Parasitic Infections in Marine Fish

摘要

Parasitic diseases of fish are very important in aquaculture as it was the basis for all outbreaks of fish. It is very important to accurate diagnose and control of the parasitic diseases of fish to avoid great economical losses in aquaculture. So it is very important to discover new techniques for diagnosis and control of fish parasitic infections. Traditional chemotherapeutic control for fish parasitic infection must be avoided for its great harmfulness like accumulative residual in fish flesh and contamination of the environment, for these reasons new techniques must be developed for control of parasitic diseases of fish. One of the most essential methods are vaccination against parasites of fish, administration of dietary probiotics and immunostimulants like spirulina and ascorbic acid for enhancing the innate and acquired immune response and weight gain in fish. Also, using of medicinal plants as anti-parastic and immunostimulsting materials. Biological control of fish parasites using cleaner fish and shrimp for removal of fish external parasites, cells and mucous from the external body surface. Lastly, the most important method for control of fish diseases is what is called “biosecurity” for prevention or reduction the entrance of pathogenic organisms into the aquatic culture by including; sanitation, disinfection and quarantine.