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Aquaculture of Seahorses

Aquaculture of Seahorses. Ashley Buhl. http://www.youtube.com/watch?v=7Lj0CO79jR8. Taxonomy. Family: Syngnathidae Hippocampus kuda H. abdominalis H . ingens H. barbouri H. comes H. breviceps H. reidi H. erectus. Economic Importance. under threat worldwide

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Aquaculture of Seahorses

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  1. Aquaculture of Seahorses Ashley Buhl http://www.youtube.com/watch?v=7Lj0CO79jR8

  2. Taxonomy • Family: Syngnathidae • Hippocampus kuda • H. abdominalis • H. ingens • H. barbouri • H. comes • H. breviceps • H. reidi • H. erectus

  3. Economic Importance • under threat worldwide • traditional Chinese medicinelargest threat • cures for skin ailments, high cholesterol levels, heart disease, lymph node disorder • souvenirs Market Locations • largest markets: North American, Europe, Japan, Taiwan Province of China Market Price • $100-$300/kg

  4. Life Cycle/Larval Stages • eggs: diameter: 1.2-1.5 mm • gestation: 10-20 days • length at birth: 8-9 mm • larva development stops one week before release from pouch

  5. Reproduction in Captivity • sexual maturity at 14 weeks • spawn 5-8 times/year • 195-626 eggs/brood • females transfer eggs to male pouches

  6. Production Methods Used • Hatchery:broodstock are obtained by 40 cm nets, kept in cages (2 x 2 x 4 m), located in calm sea in a bay or in indoor tanks • Nursery: one day after spawning, the fry are transferred to tank with biofilter, combined with UV and ozone treatment • Grow out: after 40 days, transferred to commercial size in larger indoor tanks (2-4 m3) or outdoor cages • Initially the stocking rate is 500/m3 but is decreased as they grow to 200/m3

  7. Feeding • fed from birth to 40 days old with copepods • feeding with enriched Artemia achieves >80% survival • growout: weaned to frozen feed twice per day

  8. Water Chemistry • salinity: 30-35 ppm • DO: 4-5 ppm • pH: 8-8.3 • NH3, NO2: 0 • NO3: <20 ppm • temperature: 20-28oC • current flow, tall tank

  9. Advantages • high market value, low production cost • quick growth, high fecundity, fast gestation

  10. Disadvantages • susceptible to disease • must maintain pristine water • easily stressed=no productivity

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