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Diversity of a gastropod family Rissoidae in the Arctic is extremely low compare with boreal and tropical environments. A few genus-level taxa with predominantly Arctic distribution are poorly studied in the respects of taxonomical composition, morphology, and distribution. Taxonomical revision of the genus Boreocingula Golikov et Kussakin, 1974, based on the morphology of shell and soft body is presented here. The study is based mainly on the material, stored in the Zoological Institute of Russian Academy of Sciences (Saint-Petersburg, Russia). As a result, five species are suggested to be a members of the genus, three of them (B. martyni (Dall, 1887), B. alaskana (Bartsch, 1912) and Boreocingula sp.n.) distributed in the extremely north of the Pacific Ocean and the adjacent Siberian Seas, whereas two others (B. castanea (Møller, 1842) and B. globulus (Møller, 1842)) are known from the Arctic parts of the Atlantic Ocean, including the Davis Strait and the Barents Sea. Representatives of the genus are unique in having of pitted protoconch, upper oviduct gland, divided into small partitions. Morphology of radula, unusual for the Rissoidae is found on B. globulus and B. sirenkoi. Imposex females are described for B. martyni. Species of Boreocingula are known almost exclusively in the shallow-waters (down to several tens of meters), including the littoral zone, which is uncommon for the typical Arctic macrobenthic organisms.
Original languageEnglish
Title of host publicationEUROMAL. 8th European Congress of Malacological Societie
Subtitle of host publicationBook of Abstracts
Place of PublicationKraków
Pages147
StatePublished - 2017
Event8th European Congress of Malacological Societies - Краков, Poland
Duration: 10 Sep 201715 Sep 2017
Conference number: 8

Conference

Conference8th European Congress of Malacological Societies
Abbreviated titleEuroMal
Country/TerritoryPoland
CityКраков
Period10/09/1715/09/17

ID: 97923799