Wednesday, October 12, 2011

Metapenaeus monoceros

Shrimp / Prawn / Shrimp / Penaeus / Metapenaeus monoceros is a crustacean that has a high tolerance for toxins and can contribute to high toxin levels to their predators. Language of Simply, shrimp can live a normal life in the polluted area, but the poison was not ternetralisir contamination, but a unity in the body of the shrimp. So the predators that eat shrimp will be poisoned, although the shrimp that looks healthy eating.

Shrimp will lay eggs and collected all at once taken in the abdomen (the number of eggs depends on the type & size of shrimp). These eggs will then be fertilized externally (by the male's sperm sprayed into the water off). Eggs in the parent state of the stomach is not completely safe, because it could be eggs regardless if exposed to strong current, or when the parent suddenly swim quickly to escape from predators.


Within 24 hours, the eggs will hatch into nauplius and separated from the mother's abdomen. Nauplius shape resembles a small bug (similar to an alien as well). Nauplius life left to the mercy of the water because it can not control the movement and can not swim. At sea, nauplius will become part of the zooplankton as food for many marine creatures live.


Nauplius then morphed into the second phase of the Zoea. Zoea eating wild algae.


After a few days Zoea metamorphosed into mysis. Mysis eat algae and zooplankton. If it is indirectly / unintentionally consuming nauplius, then they are included in the class of animal cannibals.


After 3 to 4 days later last metamorphosed into mysis stage pascalarva: young shrimp that already has the characteristics of adult shrimps, but the color is more transparent than adult shrimp. When a young shrimp, shrimp not only know how to swim, but also begin to learn to walk with their feet 5 pairs (previously could not). The whole process takes about 12 days (for small shrimp) from first hatch to be adult shrimp.

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