TY - CHAP

T1 - Taxonomy and distribution of the molluscan genus Boreocingula in the Arctic and Subarctic waters (Gastropoda: Rissoidae)

AU - Nekhaev, Ivan

N1 - Conference code: 8

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

UR - https://www.researchgate.net/publication/319649706_Taxonomy_and_distribution_of_the_molluscan_genus_Boreocingula_in_the_Arctic_and_Subarctic_waters_Gastropoda_Rissoidae

UR - https://pure.spbu.ru/admin/files/9316149/2017_Boreocingula.pdf

M3 - Conference abstracts

SN - 9788379861569

SP - 147

BT - EUROMAL. 8th European Congress of Malacological Societie

CY - Kraków

Y2 - 10 September 2017 through 15 September 2017

ER -