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- The adult
oysters present a sexuée reproduction. oysters
dig Crassostrea gigas are oviparous animals, i.e.
that the fecundation of the ovules and the
spermatozoïdes occurs in water with the liking
of the currents. They present an alternative
sexuality. They function like male or as female
during one season then change sex the following
year. Some hermaphrodites (having the two sexes
at the same time) remains after the youthful
stage, but they are rare.
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sexual life of oyster is surprising. It is
hermaphrodite with its way: it changes sex each
season or after each emission of seed. |
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Turn with
turn male and female (except the first year when
they all are female), the oyster reproduces one
or more time during the summer. It is at this
period that the oyster is milky. |
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The oyster punt
is viviparous. The fecundation of eggs is carried out
safe from the shell. And it shelters them in one room
inhaling after having laid them. Each laying produces
between 500 000 to 1 500 000 eggs. |
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Less maternal,
the hollow oyster is oviparous animal and expels its eggs
not fertilized in the marine environment. It can lay from
20 to 100 000 000 eggs between June and August. But only
ten eggs, after fecundation with the liking of the
currents, will give rise to an oyster. |
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tiny
larvae of 1/10ème with 2/10èmes of millimetre
will wander with the liking of the currents in
the search of a place where to fix itself. |
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