Saduria entomon

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Saduria entomon is a benthic isopod crustacean of the family Chaetiliidae.[1][2] It is distributed along the coasts of the Arctic Ocean and of the northern Pacific Ocean. It is also found in the brackish Baltic Sea, where it is considered a glacial relict.[3] Moreover, it is present in a number of North European lakes, including Ladoga, Vänern and Vättern. It has been introduced into the Black Sea.[4]

Biology

Saduria entomon is one of the largest crustaceans in the Baltic Sea. The largest ones are found in the depths of the Gulf of Bothnia,[5] reaching a maximum length of nearly Script error: No such module "convert"..[3] S. entomon are sexually dimorphic, with males growing larger and maturing at larger sizes than females.[6] Most individuals die after reproduction, and the species might be functionally semelparous, but it is probably capable of iteroparity. Its lifespan is 3 years, possibly much longer.[6]

Saduria entomon is a predator that feeds on other benthic animals, such as Monoporeia affinis. It is also a scavenger and a cannibal.[3]

References

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