Natural Resources

Aquaculture Science by Ph.D. Rick Parker

By Ph.D. Rick Parker

This accomplished booklet introduces the reader to the aquaculture undefined. each element of this turning out to be box is roofed, from heritage of aquaculture, descriptions of aquatic crops and animals and feeding to in-depth insurance of economics, advertising, administration and ailments of aquatic animals and vegetation. AQUACULTURE technology, 3rd variation, addresses the most recent construction tools, species forms, advances in expertise, tendencies and information. The technology of aquaculture, chemistry, biology, and anatomy and body structure, is under pressure all through to make sure figuring out of basic rules. a whole bankruptcy deals unique info on profession possibilities within the aquaculture undefined.

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Oysters, shrimp, and crawfish possess an external skeleton, or exoskeleton. Muscular System The muscular system provides movement internally and externally. Muscles vary in strength and function. Muscles contract and relax to cause movement. Organisms require movement for such functions as obtaining food and oxygen and eliminating wastes. Digestive System The digestive system converts feed into a form that can be used by the body for maintenance, growth, and reproduction. It consists of all the parts of an organism that are involved in taking food into the body and preparing it for assimilation, or incorporation into the body.

Test your knowledge of this chapter by answering these questions or solving these problems. True or False 1. Aquaculture is a form of agriculture. 2. Modern Americans were the first to practice aquaculture. 3. Trout were one of the first fish involved in polyculture. 4. Aquaculture helps fisheries by providing fish to restock streams, rivers, oceans, and lakes. 5. S. food production. 6. Aquaculture developed rapidly in the United States from the 1960s to the 1980s. Short Answer 1. Scientific __________ of the problems in aquaculture helps the industry grow.

Depending on the species, organs vary in size and shape. The digestive systems of fish vary depending on the type of food eaten. Fish consuming algae and detritus have small stomachs and long intestines. Carnivorous fish possess large stomachs and short intestines. FIGURE 2-7 Basic internal anatomy of a finfish. Stomach Vertebra Olfactory Lobe Kidney Swim Bladder Brain Spinal Cord Muscle Eye Tongue Scales Intestine Gill Filament Liver Heart Gonads Anus Delmar/Cengage Learning Nostril CHAP TE R 2 • Aq u a t i c Pl a nt s a n d A nim als Operculum Gill Rakers Lamellae Gill Filaments Flow of Water Gill Arch Efferent Artery outgoing oxygenated blood Afferent Artery incoming deoxygenated blood The nervous systems of fish are well-developed, with brains and spinal columns.

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