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Little-known arctic species Montacuta spitzbergensis (Bivalvia: Montacutidae) from the north-western Pacific with notes on Montacuta substriata and Tellimya ferruginosa

Published online by Cambridge University Press:  25 March 2008

Gennady M. Kamenev*
Affiliation:
A.V. Zhirmunsky Institute of Marine Biology (IMB), Far Eastern Branch of the Russian Academy of Sciences, Palchevskogo 17, Vladivostok 690041, Russia
*
Correspondence should be addressed to: Gennady M. KamenevA.V. Zhirmunsky Institute of Marine Biology (IMB) Far Eastern Branch of the Russian Academy of SciencesPalchevskogo 17, Vladivostok 690041, Russia email: [email protected]

Abstract

An expanded description of a little-known arctic species Montacuta spitzbergensis from the Sea of Okhotsk with new data on its morphology, ecology and geographical distribution is given. This is the first record of M. spitzbergensis from the north-western Pacific. It differs from other species of Montacuta in its large (to 8.4 mm), elongate–ovate, thick shell with wide, slightly curved hinge plate, wide, short, and shallow resilifer, and weakly developed external ligament. This species occurs in the Arctic Ocean (Spitsbergen, Barents, Kara, Laptev and Chukchi Seas) and the Pacific Ocean (Sea of Okhotsk) at depths from 9 to 232 m at a bottom temperature from −1.62°C to +2.50°C. The hinge structure of the type species of the genera Montacuta and Tellimya is also discussed.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2008

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