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Oysters

Oysters. Emilie Blotiau. Oysters scientific name is Crassostrea madrasensis. Scientific Name. Physical Characteristics. Have a rough outer shell. Inner shell is smooth from the erosion of sand. Anatomy. Oysters have gills like fish that filter the oxygen out of the water.

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Oysters

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  1. Oysters Emilie Blotiau

  2. Oysters scientific name is Crassostrea madrasensis Scientific Name

  3. Physical Characteristics • Have a rough outer shell. • Inner shell is smooth from the erosion of sand.

  4. Anatomy • Oysters have gills like fish that filter the oxygen out of the water. • They are filter feeders, and use beating cilia to catch food. • They have a small three chambered heart that lies under the adductor muscle. • The mantle contains many small blood vessels which filter for oxygen in the water.

  5. Habitat • Live mostly in the intertidal zone. • Live between rocks and attached to hard substrates. • No preference to ocean temperature however they feed best at 50 degrees. • Reside mostly in brackish water.

  6. Oysters Diet • Oysters are filter feeders. • Plankton and other particles are caught by the beating cilia, and get stuck in the mucus membrane of the gills. • The gills transport the food to the stomach.

  7. Reproduction • One cannot determine if an oyster is male or female by their shells. • they are one sex or the other (not hermaphroditic). • Can change sex once or more during their lifetime. • It is almost impossible to tell the age of an oyster.

  8. Interesting Facts • Some types of oysters can produce pearls inside their shells. • They can grow to be about a foot long. • Oysters have blood and veins, their blood is colorless. • It is extremely hard to open a live oyster shell. You must use a knife.

  9. Pictures

  10. Find the oyster inthepictures!

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