PPT-Identify the main parts of a fish gill. Explain how a fish gill is adapted for efficient

Gas exchange in fish and insects Describe the ventilation mechanism in a fish Make sure to talk about volume and pressure changes 1 What method of gas exchange is shown in the graph 2 Describe what the graph is showing. JEOPARDY. How things. work?. Bony Fish. Anatomy. Circulatory. System. Digestive. System. 100. 100. 100. 100. 100. 200. 200. 200. 200. 200. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 500. 500. BIOLOGY. At 31,500 species, fish exhibit greater species diversity than any other class of vertebrates.. Three Classes of Fish. Agnathan. : Jawless fish, . *Hagfish, . Lamprey. Chondrichthyes. : Cartilaginous Fish . 13.3 Gas exchange in fish. Learning outcomes. Students should be able to understand the following:. The structure of fish gills and how water is passed along them. The difference between parallel flow and . Characteristics of all Fish. All fish are . aquatic. All fish are . vertebrates. All fish have . gills. All fish have appendages in the form of . fins. Most. fish have skin with . scales. Different Groups of Fishes. Gas exchange in humans – Why is this not an efficient system for fish??????. Why do fish gills need to be so efficient?. Oxygen not very soluble in water. Surface water = 5 . ppm. . cf. 210,000 . Characteristics of all Fish. All fish are . aquatic. All fish are . vertebrates. All fish have . gills. All fish have appendages in the form of . fins. Most. fish have skin with . scales. Different Groups of Fishes. Fish Harvest and Movement. Passive Capture Techniques. Fish caught by. Entanglement. Entrapment. Angling gears. Gear is not moved through the water. Entangling devices. Fish are snared or tangled in fabric or mesh. By . Dr Jo Bannister . BSc (Animal Sc) Hons, BSc, BVMS. &. Dr Richmond Loh . BSc BVMS MANZCVS (Aquatics) . MPhil . (Path) MANZCVS . (. Pathobiol. ) . A presentation using . NORMAL GILL FORM AND FUNCTION. VENT. CAUDAL FIN. ANAL FIN. PELVIC FIN. PECTORAL FIN. DORSAL FIN. EYE. SCALES. Fish have no eyelids. Their . eyes. are always open.. EYE. The . mouth. is used to catch and eat food. Only some fish have teeth. Fish use their . General characteristics. Most fish have 7 fins.. Many fishes have well-developed eyes and a keen sense of vision that they rely upon to find and capture food, avoid predation, locate shelter and find a mate. Many fishes see color and some are able to see in very low light levels.. Structure of Gill . & . Accessory Respiratory organs in Fishes . Contents. Introduction. Gills in Fishes. Spiracles. Structure of gill. Gross anatomy . of . gill. Gas exchange over lamellae. Pseudobranch. ‘. Branchia. ’ in . greek. = ‘gills’. In bony fish (Teleosts): . Gills lie in a . branchial. cavity covered by the operculum:. Usually two sets of four . holobranchs. Each . holobranch. consists of two . Learning outcomes. Students should be able to understand the following:. The structure of fish gills and how water is passed along them. The difference between parallel flow and . countercurrent. flow. Icthyology :is the branch of. zoology devoted to the study of fish.. . . The need . for animal protein has gone far beyond supply as a result of the rapid growth of human population in many countries of the world, especially in the developing countries. An urgent need is therefore necessary to increase the production of protein sources. Nowadays, aquaculture is one of the fastest growing food production sector and an increasingly important option in animal .