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Pearl culture (Aquaculture)

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This presentation discusses pearl culture using the pearl oyster Pinctada maxima. It describes the anatomy of the oyster, including that the operation to insert a nucleus must not exceed 30 minutes. Nucleated oysters are placed in cages suspended in seawater for 3-6 years until harvesting. Pearls are formed as a defense mechanism when the oyster's mantle tissue is irritated by an internal parasite or external injury. Cultured pearls can be identified using x-rays as they often mimic the shape of the implanted nucleus.

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AQUACULTURE PRESENTATION (PEARL CULTURE) BY U.ID
PEARL CULTURE
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
(Pearl oyster)
Pearl culture (Aquaculture)
ANATOMY OF PINCTADA MAXIMA
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
#shells are closed, whole operation should not go beyond 30 minutes because the oyster cannot survive beyond one hour of the operation period.. #Nucleated oysters placed into cages, are suspended into sea- water and the cages are attached with floating rafts at a depth of 2-3 meters . #These cages are kept generally undisturbed in this position for 3-6 years. After which they are ready for harvesting.
HARVESTING OF PEARLS #Oysters are removed from water after completion of 3 years of insertion of nucleus. #Removed from water in the month of December to February and the pearls are taken out by crushing the oyster. #Each oyster can form 3-4 pearls in their 15 years of life span.
Composition of pearl #Pearls are formed inside the shell of certain mollusks as a defense mechanism against a potentially threatening irritant such as a parasite inside the shell, or an attack from outside that injures the mantle tissue..(TISSUE IMPLANT) #Cultured pearls can be distinguished from natural pearls by X-ray examination. #Nucleated cultured pearls are often 'preformed' as they tend to follow the shape of the implanted shell bead nucleus.
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)
Pearl culture (Aquaculture)

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Pearl culture (Aquaculture)

  • 13. #shells are closed, whole operation should not go beyond 30 minutes because the oyster cannot survive beyond one hour of the operation period.. #Nucleated oysters placed into cages, are suspended into sea- water and the cages are attached with floating rafts at a depth of 2-3 meters . #These cages are kept generally undisturbed in this position for 3-6 years. After which they are ready for harvesting.
  • 14. HARVESTING OF PEARLS #Oysters are removed from water after completion of 3 years of insertion of nucleus. #Removed from water in the month of December to February and the pearls are taken out by crushing the oyster. #Each oyster can form 3-4 pearls in their 15 years of life span.
  • 15. Composition of pearl #Pearls are formed inside the shell of certain mollusks as a defense mechanism against a potentially threatening irritant such as a parasite inside the shell, or an attack from outside that injures the mantle tissue..(TISSUE IMPLANT) #Cultured pearls can be distinguished from natural pearls by X-ray examination. #Nucleated cultured pearls are often 'preformed' as they tend to follow the shape of the implanted shell bead nucleus.