Fish Hatchery Management - fisheries & aquaculture

474 FISH HATCHERY MANAGEMENTBlue slime Excessive mucus accumuration on fish, usually caused byskin irritiation due to ectoparasites or malnutrition.Blue-Slime Disease A skin condition associated with a deficiency ofbiotin in the diet.Blue Stone ,Saa Copper Sulfatb.Boil A localized infection of skin and subcutaneous tissue deveropinginto a solitary abscess that drains externally.Bouin's Fluid A mixture of 75 parts saturated picric acid, aqueous solution;25parts formalin (40%, formaldehyde) ; a.rd 5 parts glacial aceticacid. This is widely used for preserving biological materia'I.Brackish water A mixture of fresh and sea water; or water with totalsalt concentrations between 0.05% and 3.0%r.Branchiae (singular: Branchia) Gills, the respiratory organs of fishes.Branchiocraniurn The bony skeleton supporting the gill arches.Branchiomycosis A fungal infection oi if," giit, .uir"a il nrorrtrroo_mlces sp. Synonyms: gill rot; European gill rot.Broodstock Adutt fish retained fo, ,pu*rrr.rg.Buccal Cavity Mouth cavity.Buccal Incubation Incubation of eggs in the mouth; oral incubation.Buffer Chemical that, by taking up or giving up hydrogen ions, sustainspH within a narrow range.calcinosis The deposition of calcium sarts in the tissues without detect_able injury to the affected parts.Calcium Carbonate A relatively insoluble salt, CaCOr, the primaryconstituent of limestone and a common constituent of hard water.Calcium Cyanamide (Lime Nitrogen) CaCN2. Used as a pond disinfec_tant.Calcium Oxide See Lime.calorie The amount of heat required to raise the temperature of onegram of water one degree centierade.carbohydrate Any of the various neutral compounds of carbon, hydrogen,and oxygen, such as sugars, starches, and celluloses, most ofwhich can be utilized as an energy source by animals.Carbon Dioxide A colorless, odoJ"., gas, CO2, resulting from the oxi_dation of carbon-containing substances; highly sorubre in water. Toxicto fish at high levels. Toxicity to fish increases at low revers of oxygen.May be used as an anesthetic.Carbonate The CO3: ion, or any salt formed with it (such as calciumcarbonate, CaCO:;).carcinogen Any agent or substance that produces cancer or acceleratesthe development of cancer.