Life histories of three Serrulinini species (Stylommatophora: Clausiliidae) from Georgia kept under laboratory conditions
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Department of Invertebrate Zoology and Hydrobiology, University of Łódź, Poland
Institute of Zoology, Ilia State University, Georgia
Submission date: 2021-03-30
Final revision date: 2021-06-07
Acceptance date: 2021-06-09
Online publication date: 2021-08-04
Corresponding author
Anna Sulikowska-Drozd   

Department of Invertebrate Zoology and Hydrobiology, University of Łódź, Poland
Folia Malacol. 2021;29(3):137-146
The Serrulinini, a small relict group of clausiliids occurring in coastal regions of the Black and Caspian Seas and the Caucasus, are currently classified within the Phaedusinae, however paraphyletic origin of the Serrulinini is also widely debated with Pontophaedusa funiculum (Mousson) being most phylogenetically distinct from other taxa. As life history data may have taxonomical value, we conducted long-term observations in laboratory culture to assess reproductive modes, fecundity and growth pattern of three serruline species. Caspiophaedusa perlucens (O. Boettger) and Pravispira semilamellata (Mousson) produced partly calcified eggs with regular, spiral arrangement of crystals; their juveniles hatched after 17–18 days; the generation time was long and significantly exceeded one year. P. funiculum laid heavily calcified, elongated eggs. The incubation time in P. funiculum varied depending on the humidity, with a tendency towards short embryo-retention. The generation time in P. funiculum was one year. In all the studied species, egg calcification differed from the pattern common for other oviparous Phaedusinae which produce partly calcified eggs with homogeneous distribution of crystals. The calcite crystal distribution in the egg membranes reported here for the Serrulinini suggests some potential of these characters in phylogenetic context.
Caucasian Molluscan Database 2021. Available online at (accessed 28 January 2021).
Gittenberger E. 2000. Serrulininae in Greece, there may be more (Gastropoda, Pulmonata, Clausiliidae). Basteria 64: 81–87.
Grego J., Szekeres M. 2017. Cotyorica nemethi n. gen. n. sp., a remarkable Tertiary relict of the subfamily Phaedusinae (Gastropoda: Pulmonata: Clausiliidae) from northern Turkey. Ecologica Montenegrina 10: 26–30.
Maltz T. K., Sulikowska-Drozd A. 2008. Life cycles of clausiliids of Poland – knowns and unknowns. Annales Zoologici 58: 857–880.
Mamos T., Uit de Weerd D., von Oheimb P. V., Sulikowska-Drozd A. 2021. Evolution of reproductive strategies in the species rich land snail subfamily Phaedusinae (Stylommatophora: Clausiliidae). Molecular Phylogenetics and Evolution 158: 1–8.
Marzec M. 2018. Life cycle and growth of Bulgarica cana (Held, 1836) under laboratory and natural conditions. Journal of Conchology 43: 149–166.
Milne R. I., Abbott R. J. 2002. The origin and evolution of Tertiary relict floras. Advances in Botanical Research 38: 281–316.
Motochin R., Wang M., Ueshima R. 2017. Molecular phylogeny, frequent parallel evolution and new system of Japanese clausiliids land snails (Gastropoda: Stylommatophora). Zoological Journal of the Linnean Society 181: 795–845.
Mumladze L., Japoshvili B., Anderson E. P. 2020. Faunal biodiversity research in the Republic of Georgia: a short review of trends, gaps, and needs in the Caucasus biodiversity hotspot. Biologia 75: 1385–1397.
Mumladze L., Szekeres M. 2020. A second extant species of Pontophaedusa Lindholm, 1924 (Gastropoda, Pulmonata, Clausiliidae) from Georgia. Ruthenica 30: 149–154.
Nordsieck H. 1978. Zur Anatomie und Systematik der Clausilien, 20. Die rezenten Arten der Serrulininae und der Gattung Caspiophaedusa. Archiv für Molluskenkunde 109: 91–101.
Nordsieck H. 2007. Worldwide door snails (Clausiliiidae), recent and fossil. ConchBooks, Hackenheim.
Nordsieck H. 2015. Fossil Clausilioidea in space and time, with special emphasis on cretaceous and pre-Oligocene Cenozoic Clausiliidae (Gastropoda: Stylommatophora). Archive für Molluskenkunde 144: 83–97.
Páll-Gergely B. 2010. Additional observation on the reproductive biology and development of the clausilial apparatus in Pontophaedusa funiculum (Mousson, 1856) (Gastropoda, Pulmonata, Clausiliidae, Phaedusinae). Malacologica Bohemoslovaca 9: 1–4.
Páll-Gergely B., Nemeth L. 2008. Observations on the breeding habits, shell development, decollation, and reproductive anatomy of Pontophaedusa funiculum (Mousson 1856) (Gastropoda, Pulmonata, Clausiliidae, Phaedusinae). Malacologica Bohemoslovaca 7: 11–14.
Pokryszko B. M., Cameron R. A. D., Mumladze L., Tarkhnishvili D. 2011. Forest snail faunas from Georgian Transcaucasia: patterns of diversity in a Pleistocene refugium. Biological Journal of the Linnean Society 102: 239–250.
17. 2021. QGIS Geographic Information System. QGIS Association. Available online at (accessed 30 March 2021).
Reischütz A., Reischütz P. L., Szekeres M. 2016. The Clausiliidae subfamily Phaedusinae (Gastropoda, Pulmonata) in the Balkans. Nachrichtenblatt der Ersten Vorarlberger Malakologischen Gesellschaft 23: 93–117.
Sulikowska-Drozd A., Chiżyńska A., Maltz T. K. 2018a. The reproductive strategies of clausiliid land snails from Northern Vietnam (Gastropoda: Stylommatophora). Journal of Natural History 52: 1785–1799.
Sulikowska-Drozd A., Duda P., Janiszewska K. 2020. Micro-CT screening of old shell collections helps to understand the distribution of viviparity in the highly diversified clausiliid clade of land snails. Scientific Reports 10: 60.
Sulikowska-Drozd A., Hirano T., Wu S.-P., Páll-Gergely B. 2018b. High fecundity, rapid development and selfing ability in three species of viviparous land snails Phaedusinae (Gastropoda: Stylommatophora: Clausiliidae) from East Asia. Zoological Studies 57: 38.
Sysoev A., Schileyko A. 2009. Land snails and slugs of Russia and adjacent countries. Pensoft, Sofia–Moscow.
Tarkhnishvili D., Gavashelishvili A., Mumladze L. 2012. Palaeoclimatic models help to understand current distribution of Caucasian forest species. Biological Journal of the Linnean Society 105: 231–248.
Tompa A. S. 1976. A comparative study of the ultrastructure and mineralogy of calcified land snail eggs (Pulmonata: Stylommatophora). Journal of Morphology 150: 861–888.
Tompa A. S. 1979. Oviparity, egg retention and ovoviviparity in Pulmonates. Journal of Molluscan Studies 45: 155–160.
Uit de Weerd D., Gittenberger E. 2013. Phylogeny of the land snail family Clausiliidae (Gastropoda: Pulmonata). Molecular Phylogenetic and Evolution 67: 201–216.
Walther F., Kijashko P. V., Harutyunova L., Mumladze L., Neiber M. T., Hausdorf B. 2014. Biogeography of the land snails of the Caucasus Region. Tentacle 22: 3–5.
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