First finding of a widely distributed Antarctic chiton species (Mollusca: Polyplacophora) in the North Pacific

B. I. Sirenko


For the first time, the widely spread Antarctic species Leptochiton antarcticus was found at the Emperor Seamounts in the North Pacific Ocean. In spite of a large distance between the Emperor Seamounts
and Antarctica, the found specimen have very similar shell, girdle, radula and gill features to the type material. I propose that L. antarcticus spread to the North Pacific from the Antarctic via a deep-water current near the ocean floor, and perhaps it inhabits the slopes of islands and continents from the South Ocean to the Emperor Seamounts.


Leptochiton antarcticus; Emperor Seamounts; distribution


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