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Aquaculture systems

Aquaculture systems. Biotic and abiotic components: 1. The fish component Behavioral/physiological requirements – must be in normal (optimal) range Dissolved inorganic and organic compounds pH. Aquaculture systems. Biotic and abiotic components: 2. The water component –

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Aquaculture systems

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  1. Aquaculture systems • Biotic and abiotic components: • 1. The fish component • Behavioral/physiological requirements – must be in normal (optimal) range • Dissolved inorganic and organic compounds • pH

  2. Aquaculture systems • Biotic and abiotic components: • 2. The water component • – • 3. Pond or rearing area/container • Provide spatial requirements for species

  3. Aquaculture systems • Biotic and abiotic components: • 4. Nutritional requirements • Provides energy requirements to meet – standard metabolic demands • Components associated with water quality

  4. Aquaculture systems • Biotic and abiotic components: • 5. Management of the system • Fish culturist governs how well all components will be “balanced” • Management factors: • Record-keeping • Pond cleaning techniques and frequencies

  5. Aquaculture systems • Management conditions: • Extensive culture: Low degree of input on manager’s part • Low water exchanges • Common in developing regions • Subsistence production

  6. Aquaculture systems • Management conditions: • 2. Semi-intensive • Higher degree of management than extensive • Common in warmwater foodfish industry – catfish • Feed daily • Assess growth and mortality

  7. Aquaculture systems • Management conditions: • 3. Intensive • Common in salmonid culture • Feeding of commercial feeds at high rates • Continual sampling and monitoring

  8. Aquaculture • Public aquaculture: • Purpose: • Mitigation • Conservation/species recovery (ESA) • Management/sport fishing • Mitigation: • Columbia/Snake River systems

  9. Aquaculture • Conservation: • Endangered species preservation • Recovery of listed stock

  10. Aquaculture • Management/sportfishing: • Game fish stocking (non-salmonids) • Bass • Pike • Walleye • Put and take fisheries

  11. Aquaculture • Private aquaculture • Purpose: • Commercial: • Food/table fish and other aquatic species • Fee fishing • Trout/catfish • Common in Midwest/east

  12. Aquaculture • Bait fish – for sportfishing in many states • Forage fish • Tilapia/carp • Ornamental species • Aquarium/hobbyist trade • Direct or wholesale markets

  13. Aquaculture • Components of private and public aquaculture: • Production: • All life stages • Marketing (important in commercial) • Sales and distribution • Processing waste • Disposal • Value added product

  14. Aquaculture • Factors to consider in private aquaculture: • Feed availability/manufacturing • Equipment • Product development/marketing • Engineering/construction • Real estate

  15. Aquaculture • Economics: • Variable costs • Eggs/fingerlings • Feed • Mortality • Utilities • Maintenance • Fixed costs: • Labor • Insurance • Taxes • Advertising

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