. Back to SOP Index Daily Check List Weekly Check List Monthly Monitoring Feed Requirements Essential Nutrients Additional Nutritional Factors Feeding Regime Water Quality Requirements Water Quality Action and Reaction Water Quality Management and Biofilter Maintenance Post larval fitness parameters Post Larva Acclimitation YOU ARE IN HEALTH MANAGEMENT Risk Management, Bio-security and HACCP Implementation Harvesting System Disinfection Procedures Equipment Maintenance Record Keeping and Report Templates

. Black gill disease, Burned gills, Black spot disease, Branchiostegite melanization. Scientific name or taxonomic affiliation Manifestation of a number of disease syndromes including ascorbic acid deficiency. Geographic distribution Ubiquitous. Host species All penaeids, Macrobrachium rosenbergii, Pandalus borealis and Pandalus platyceros especially under captive/culture conditions. Impact on the host Destruction and dysfunction of gill processes, secondary infections. Diagnostic techniques Gross Observations: Multifocal black or brown spots in, or general discolouration of, the gills, due to melanization at sites of tissue necrosis. Gill melanization may be visible through side of carapace. Wet Mounts: Will identify condition as above. Histology: Massive haemocyte accumulation (called inflammation by some authors), tissue necrosis and melanin deposition in affected areas of gills. Secondary infections of bacteria, fungi and protozoa may occur. Methods of Control May be due to a variety of biotic and abiotic agents; prevention or control may be feasible if cause can be identified. .

. HEALTH MANAGEMENT & DISEASE CONTROL INDEX Variables to be used in health evaluation Health evaluation tests Wet Mount Procedure . PL visual examination . Stress test for post larva . Gill examination . Mid-gut Examination . Stomach Contents Analysis Shrimp Diseases Viruses Hepatopancreatic parvo-like virus (HPV) . Reo-like virus (REO) . Lymphoid organ vacuolization virus (LOVV) . Taura Syndrome Virus (TSV) . Rhabdovirus of Penaeid Shrimp (RPS) . White Spot Syndrome Virus (WSSV) . Infectious hypodermal and hematopoietic virus (IHHNV) . Baculovirus penaei (BP) Bacterial Diseases Vibriosis . Epicommensal fouling disease (filementous bacteria) . Necrotizing Hepatopancreatitis (NHP) . Black spot disease (BSD) . Mycobacteriosis Fungal Diseases Larval mycosis . Fusariosis Protozoans Haplosporidia . Gregarines . Cotton Disease Other You are here . Dissolved Oxygen Crisis . Nitrogen Gas Bubble Disease Disease control Decreasing density, partial or early harvests . Drugs, chemicals and treatments . Sanitation .