Abstract
The data on taxonomy and distribution of stagnicoline snails[1] of the northern part of Western Siberia (Lower Ob’ drainage basin) are relatively scant. The most recent survey of this group in the region was presented by Dolgin (2001) in his unpublished thesis where three stagnicoline species are recorded: Lymnaea (Stagnicola) palustris (O.F. Müller, 1774), L. (S.) terebra (Westerlund, 1885), and L. (S.) zebrella (B. Dybowski, 1913). Earlier authors published some data on stagnicolines of the northern water bodies of Western Siberia (Westerlund 1887; Lindholm 1919; Khokhutkin 1966; Drozdov 1967; Dolgin & Johansen 1980; Dolgin & Novikova 1984), however, all those researchers, as well as Dolgin (2001), did not study the anatomical traits of the snails they had at their disposition and, thus, species identification was carried out solely on the basis of conchological characters. Meanwhile, conchological traits in stagnicoline snails are known to display a large extent of intra- and interspecific variation (Jackiewicz 1993), and therefore are not completely suitable for reliable species determination. In order to discriminate between numerous lymnaeid species, the study of shell characters should be accompanied by the examination of the structure of the reproductive organs. In some cases, it is utterly impossible to distinguish between certain stagnicoline species on the ground of conchological traits (Jackiewicz 1993).
References
Andreeva, S.I., Andreev N.I. & Vinarski M.V. (2010) Key to freshwater gastropods of Western Siberia (Mollusca: Gastropoda). V. 1. Gastropoda: Pulmonata. Fasc. 1. Families Acroloxidae and Lymnaeidae. The authors, Omsk, 200 pp. [In Russian]
Bargues, M.D., Artigas, P., Jackiewicz, M., Pointier, J.P. & Mas-Coma, S. (2006) Ribosomal DNA ITS-1 sequence analysis of European stagnicoline Lymnaeidae (Gastropoda). Heldia, 6, 57–68.
Dolgin, V.N. (2001) Freshwater Mollusca of the Arctic and Subarctic zones of Siberia. Doctoral thesis (unpublished), Tomsk State University, 423 pp. [In Russian]
Dolgin, V.N. & Johansen, B.G. (1980) Ecological-geographical characteristics of molluscs of the northern part of Western Siberia. In: New data on the Siberian nature. Tomsk State University Press, Tomsk, pp. 47–61. [In Russian]
Dolgin, V.N. & Novikova, O.D. (1984) Hydrobiology of the Yamal Peninsula water bodies. In: Biological resources of waterbodies of Siberia and Far East. Nauka, Moscow, pp. 87–95. [In Russian]
Drozdov, V.N. (1967) Notes on the malacofauna of the Obian Trans-Polar zone. In: Problems of hygiene. Omsk State Medical Institution Press, Omsk, pp. 42–45. [In Russian]
Dybowski, B. (1913) Bemerkungen und Zusätze zu der Arbeit von Dr. W. Dybowski “Mollusken der Uferregion des Baikalsees. Annuaire du Musée Zoologique de l'Académie Impériale des Sciences de St.-Pétersbourg, 17 (for 1912), 165-218.
Hubendick, B. (1951) Recent Lymnaeidae. Their variation, morphology, taxonomy, nomenclature and distribution. Kungliga Svenska Vetenskapsakademiens Handlingar. Fjärde Serien, 3(1), 1–223, pls.1–5.
Jackiewicz, M. (1993) Phylogeny and relationships within the European species of the family Lymnaeidae. Folia Malacologica, 5, 61–95.
Khokhutkin, I.M. (1966) Some data on the malacofauna of Yamal and Taz peninsulae. Proceedings of the Insitute of Biology, Uralian branch of the Soviet Academy of Sciences, 49, 65–66. [In Russian]
Kruglov, N.D. (2005) Lymnaeid snails of Europe and Northern Asia. Smolensk State Pedagogical University Press, Smolensk, 508 pp. [In Russian]
Kruglov, N.D. & Starobogatov, Y.I. (1993) Annotated and illustrated catalogue of species of the family Lymnaeidae (Gastropoda Pulmonata Lymnaeiformes) of Palaearctic and adjacent river drainage areas. Part I. Ruthеnica, 3, 65–92.
Lindholm, W.A. (1919) Über Binnenmollusken aus dem äussersten Nordwesten Sibiriens. Scientific results of the brothers Kuznetsov Expedition to the Polar Urals under command of O.O. Backlund in 1909, 10, 1–10.
Mozley A. 1934. New fresh-water mollusks from northern Asia. Smithsonian Miscellaneous Collections, 92(2), 1–7, pl.1.
Müller, O.F. (1774) Vermium terrestrium et fluviatilium, seu animalium infusoriorum, helminthicorum, et testaceorum, non marinorum, succincta historia. Volumen alterum. Heineck et Faber, Havniae et Lipsiae, XXXVI+224+[10] pp.
Westerlund, C.A. (1885) Fauna der in der Paläarktischen Region lebenden Binnenconchylien. V. Fam. Succineidae, Auriculidae, Limnaeidae, Cyclostomidae und Hydrocenidae. H.Ohlsson, Lund, [1]+135+14 pp.
Westerlund, C.A. (1887) Land- och Sötvatten-Mollusker insamlade under Vega-Expeditionen af C. Nordqvist och A. Stuxberg. Vega-Expeditionens vetenskapliga iakttagelser, 4, 143–220.