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Gonads, oysters
Anatomy of a developing flat oyster,
Ostrea edulis; am - adductor muscle;
g - gonad tissue overlying the
digestive gland; gl - gills; h - hinge; ic
- inhalant chamber of mantle cavity.
At spawning, eggs pass through the
gills into the inhalant chamber of the
mantle cavity where they develop to
fully shelled larvae over the course of
a week or more, depending on species.
The parent releases larvae when they
are able to ingest and digest algae.
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Oyster lifecycle
Oyster Larvae
The planktonic oyster larvae face the
danger of predation from planktonfeeding animals, including adult oysters.
Adult oyster predators include fish; crabs;
snails; starfish, and flatworms
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Figure 8: The soft tissue anatomy of the European flat oyster, Ostrea edulis, and the calico
scallop, Argopecten gibbus, visible following removal of one of the shell valves. Key: AM adductor muscle; G - gills; GO - gonad (differentiated as O - ovary and T - testis in the calico
scallop); L - ligament; M - mantle and U - umbo. The inhalant and exhalant chambers of the
mantle cavity are identified as IC and EC respectively.
生物技術概論(高立圖書)
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生物技術概論(高立圖書)
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