A giant crustacean in an aquarium in Japan was thought to be a familiar variety of deep-sea isopod. Turns out it's a completely new species
Dr. Ming-Chih Huang, Journal of Natural History
A giant armoured crustacean kept in a Japanese aquarium has been found to be a new species. The discovery adds to the nearly two dozen known species of– large, 14-legged crustaceans that relish the deepest, darkest, coldest waters of the Atlantic, Pacific and Indian Oceans. When the yellow crustacean was collected from a baited trap off the coast of Mexico’s Yucatán Peninsula in 2017, it was assumed to belong to thespecies of isopod and was purchased by the Enoshima Aquarium in Fujisawa, Japan. The imposter avoided discovery untilat the National University of Tainan in Taiwan decided to sequence the preserved specimen’s DNA for a previous project on isopod genetics.
Huang was surprised to see substantial differences between the new isopod’s genome – its full set of genetic instructions – and that of“At first, I thought it was [genetic] contamination, so I repeated the [DNA] sequencing experiment several times, and the results were the same,” says Huang, which suggested that he had two different species on his hands.resembles a scaled-up version of its smaller cousin, the common woodlouse, or “pill bug”.
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