9788185375588 - Prevention and Control of Fish and Prawn Diseases 2nd edn [Paperback] [Jan 01, 2017] Biswas, K P (1 Ergebnisse)

Hardbound. Zustand: As New. Contents: Preface. 1. Introduction. 2. Environment and organism. 3. Pond bottom treatment. 4. Fish diseases. "To enhance aquaculture production, high stocking rate followed by heavy dose of fertilizers and feed influence the environmental stress factors exceeding acclimation tolerance limits of the cultured stock. As a result the occurrence of frequent fish disease epizootic lead to mortality of fish and decline in fish population.In fact, the production of fish show negative correlation with the environmental stress and disease. The various fish diseases of economic importance identified until now include ulcerative dropsy, columnaries disease, trichodiniasis, white gill spot, white scale spot, dactylogyrosis,black spot, ligulosis, ergasilosis, lernaeosis, argulosis, branchiomycosis and saprolegniasis, have been outlined in the book. Environmental diseases, such as, gas bubble disease, unionised ammonia stress, algal toxicosis, commonly encountered in culture system have been find place in the book. Much stress has been given, in this book, in combating epizootic fish diseases by good husbandry practices and proper monitoring of water quality. "Common shrimp diseases in culture systems and detailed updated informations about viral diseases, particularly, WSBV and WSSV of prawn, causing epidemic in shrimp hatchery and culture systems have been find place in the book. New topics, such as, marine medicines, immune system of fishes to fight diseases, ecomonitoring a measure to prevent stress and disease of fish and prawn, care of acquarium fishes and.