Organization of stylets of mollusсs of the genera Gyraulus and Choanomphalus (Pulmonata: Planorbidae)Proceedings of the Zoological Institute RAS, 2009, 313(1): 68–73 · https://doi.org/10.31610/trudyzin/2009.313.1.68 Abstract Morphological characters of stylets of mollusks (Pulmonata: Planorbidae) of two widely distributed species of the genus Gyraulus (G. аlbus, G. borealis) and two species of the genus Choanomphalus (Ch. amauronius, Ch. rossmaessleri) have been studied by Scanning Electron Microscope (SEM) in details and are described herein. The importance of the stylet morphology for the taxonomic descriptions is discussed. Key words molluscs, morphology, stylet, taxonomy, Choanomphalus, Gyraulus Submitted September 2, 2008 · Accepted November 25, 2008 · Published March 25, 2009 References Круглов Н.Д. и Солдатенко Е.В. 2000. Новые данные о видах подрода Gyraulus рода Anisus Европейской части Росси и сопредельных территорий (Gastropoda: Planorbidae). Ruthenica, 10: 113–120. Ситникова Т.Я. и Тахтеев В.В. 2006. Брюхоногие моллюски (Gastropoda) из горячих источников Прибайкалья. Труды Биолого-почвенного факультета ИГУ, 6: 137–150. Старобогатов Я.И. 1967. К построению системы пресноводных легочных моллюсков. Труды Зоологического института АН СССР, 42: 280–304. Старобогатов Я.И. 1970. Распространение моллюсков континентальных водоемов: Фауна моллюсков и зоогеографическое районирование континентальных водоемов. Издательство «Наука», Ленинград, 371 с. Старобогатов Я.И., Прозорова Л.А., Богатов В.В. и Саенко Е.М. 2004. Моллюски. Определитель пресноводных беспозвоночных России и сопредельных территорий. Издательство «Наука», С.-Петербург, 492 с. Albrecht C., Kuhn K. and Streit B. 2007. A molecular phylogeny of Planorboidea (Gastropoda, Pulmonata): insights from enhanced taxon sampling. Zoologica Scripta, 36: 27–39. https://doi.org/10.1111/j.1463-6409.2006.00258.x Baker F.C. 1945. Molluscan family Planorbidae. Urbana, University of Illinois Press, 530 p. Brown D.S. and Mandahl-Barth G. 1973. Two new genera of Planorbidae from Africa and Madagascar. Proceedings of the Malacological Society of London, 40: 287–302. Brown D. 1998. Freshwater snails of the genus Gyraulus (Planorbidae) in Australia: the taxa of Tasmania. Molluscan Research, 19: 105–154. https://doi.org/10.1080/13235818.1998.10673718 Brown D. 2001. Taxonomy, biography and phylogeny of the non-lacustrine African freshwater snails belonging to the genera Ceratophallus and Afrogyrus (Mollusca: Planorbidae). Journal of Zoology. The Zoological Society of London, 255: 55–82. https://doi.org/10.1017/S095283690100111X Hubendick B. 1957. On the male copulatory organ in Anisus. Proceedings of the Malacological Society of London, 32: 208–212. Hubendick B. 1958. The development of the penial stylet in Gyraulus (Moll. Pulm.). Arkiv för Zoologi, 11: 427–429. Meier-Brook C. 1964. Gyraulus acronicus und G. rossmaessleri, ein anatomischen Vergleich (Planorbidae). Archiv für Molluskenkunde, 93: 233–242. Meier-Brook C. 1983. Taxonomic studies on Gyraulus (Gastropoda: Planorbidae). Malacologia, 24: 1–113. Рrosorova L.А. and Starobogatov Y.I. 1997. New species of the subgenus Gyraulus of the genus Anisus and Gyraulus-similar forms from Asiatic Russia (with notes on the classification of the genera Anisus and Choanomphalus) (Gastropoda: Planorbidae). Ruthenica, 7: 39–50. Röepstorf P. and Riedel F. 2004. Deepwater gastropods endemic to lake Baikal and sem study on protoconchs and Radulae. Journal of Conchology, 38: 253–282.
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