1 / 17

Pearl Oyster

Katie Shiparski. Pearl Oyster. Pinctata radiata (Gulf Pearl Oyster) Pinctada margaritifera (Black Lip Oyster/ Tahitian) Pinctada maxima (Gold Lip oyster) Pinctada maxima (White Lip oyster) Pinctada fucata ( Akoya pearl Oyster) Pinctada albino (Shark Bay oyster).

arnon
Download Presentation

Pearl Oyster

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Katie Shiparski Pearl Oyster

  2. Pinctataradiata (Gulf Pearl Oyster) Pinctadamargaritifera (Black Lip Oyster/ Tahitian) Pinctada maxima (Gold Lip oyster) Pinctada maxima (White Lip oyster) Pinctadafucata (Akoya pearl Oyster) Pinctada albino (Shark Bay oyster) Taxonomy of types cultured { ~19 species Most popular commercially

  3. Economic importance

  4. Retail Multi Billion dollar commerce While cultured and natural pearls are considered to be of equal quality, cultured pearls are generally less expensive because they aren't as rare ECONOMIC IMPORTANCE

  5. How a pearl is constructed: http://youtu.be/qvyUwamNu9A Nacre

  6. Life Cycle and Larval stages

  7. Thermal stimulation induces spawning After weeks of free floating they are moved into a ‘nursery’ or juvenile net Can reproduce at 6 months but optimal reproduction is between 2-10 years REPRODUCTION

  8. A nucleus/grain (usually mother of pearl) is inserted with a piece of donor mantle tissue into the pearl pocket • Nucleus can be rejected in which case it forms a Keshi (beadless deformed pearl) • Can be graftedmultiple times • Species Dependent Grafting

  9. Long line • Cages with string of oysters hanging Methods

  10. Raft Culturing • Generally in bays METHODS

  11. On bottom culturing • Granite/coral sand METHODS

  12. Most species of pearls are ready to harvest after 2-6 years • Some only need 18 months (Akoya) • Harvesting done in winter months because luster is at its highest • X-rays used to look at the pearl size HARVESTING

  13. Filtered water supplies most food along with microalgae • Adults can filter up to 5 L per hour • Low labor until winter months for harvesting Extensive aqualculture

  14. Temperature • between 20 – 25C (77F) • Salinity • Prefer higher salinities, but tolerate wide range. • Bottom • Hard sediments/gravel are best • For best quality, avoid sand and silt • Depth • Optimum depth around 15 meters Water Chemistry and environmental requirements in culture

  15. Almost 100% of new pearls come from aquaculture • Almost any size, color, luminosity, shape, etc. • Largely extensive Advantages OF PEARL OYSTER

  16. Time consuming at first. In competition with imitation pearls. Can be effected by weather or natural disasters. More “rare” or expensive pearls have a limited production DISADVANTAGES OF PEARL OYSTER

  17. ….Put a ring on it SO if you like it…

More Related