Clausilia dubia

Clausilia dubia

Communication Katharina Mason

Among many clausilid species numerous subspecies have been described in the past which is partly a consequence of their patchy distribution and their complex morphology. Especially the clausilial structures in the aperture are highly differentiated. In case of Clausilia dubia (DRAPARNAUD, 1805) 16 subspecies are listed solely for Austria. In the present project morphological data (various shell characters) and molecular data (partial sequences of the mitochondrial gene for COI) were for the first time investigated in parallel to assess phylogeographic patterns. It was our aim to evaluate whether the described subspecies are genetically and/or morphologically differentiated. Moreover we wanted to find out whether the morphological and the genetic results are in accordance. We analyzed 150 individuals of Clausilia dubia, collected at 55 sampling sites in the eastern part of the Northern Calcareous Alps of eastern Austria. In this area 12 subspecies are expected to occur. Of these 12 subspecies only ten could be differentiated morphologically, but due to their similarities they can be merged in four morphogroups. In the NJ-tree derived from the DNA sequence data at least five highly supported clades become apparent. However, none of these clades corresponds solely to any of the described subspecies or morphogroups. Though these data are still preliminary, final taxonomic and nomenclatorial consequences will be proposed when the data set is complete.

Katharina Mason

Katharina Mason

Natural History Museum of Vienna, 3rd Zoological Department

Publications on Clausilia

Thesis

Jaksch, K. (2012). Phylogeographie und Unterartklassifikation von Clausilia dubia DRAPARNAUD, 1805 im östlichen Österreich (Gastropoda: Pulmonata: Clausiliidae) [Diploma Thesis]. University of Vienna. Cite

Abstracts

Fehér, Z., Haring, E., Jaksch, K., Páll-Gergely, B., Sattmann, H., Szekeres, M., Bamberger, S., & Sólymos, P. (2015). Analysis of Montenegrina (Gastropoda: Clausiliidae) co-occurrences infers high niche similarity below the genus level. Abstracts of the International Congress on the Zoogeography and Ecology of Greece and Adjacent Regions, 13 Th ICZEGAR, 7 - 11October 2015, 33.
Jaksch, K. (2012). Unterarten oder nicht? Neue Erkenntnisse zur Unterartklassifiktion von Clausilia dubia [Talk]. Jahrestagung der Deutschen Malakologischen Gesellschaft, Bad Ischl.
Jaksch, K., Kruckenhauser, L., Duda, M., Harl, J., Sattmann, H., & Haring, E. (2011). Clausilia dubia (Draparnaud, 1805) in the Eastern Alps: phylogeography and subspecies classification (Gastropoda: Pulmonata: Clausiliidae). [Talk]. Exkursionsworkshop Alpine Landschnecken, Johnsbach, Austria.
Jaksch, K., Kruckenhauser, L., Duda, M., Harl, J., Sattmann, H., & Haring, E. (2010). Phylogeography and subspecies classification of the landsnail Clausilia dubia in Eastern Austria (Gastropoda: Pulmonata: Clausiliidae). [Poster]. The Malacological Society of London, Molluscan Forum, London (UK).
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2011, December 2). Nomen est omen: Clausilia dubia (Gastropoda: Pulmonata: Clausiliidae) and its dubious subspecies classification. [Oral presentation]. 5. Jahrestagung NOBIS Austria, Salzburg (Austria).
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2011, November 30). Clausilia dubia (Draparnaud, 1805) in the Eastern Alps: phylogeography and the subspecies classification (Gastropoda: Pulmonata: Clausiliidae). [Poster]. The Malacological Society of London, Molluscan Forum, London (UK).
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2012, September 26). Clausilia dubia (Draparnaud, 1805) in the Eastern Alps: phylogeography and subspecies classification (Gastropoda: Pulmonata: Clausiliidae) [Poster]. Departmentssymposium Evolutionsbiologie, Univ. Vienna, Wien.
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2013, February 18). Biodiversity homemade⁈ - Clausilia dubia and its various subspecies. BioSyst EU 2013, Vienna, Austria.
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2013, July 21). Phylogeography and subspecies classification of Clausilia dubia Draparnaud, 1805 in East Austria. World Congress of Malacology, Ponta Delgada, Azores (Portugal).
Jaksch, K., Kruckenhauser, L., Duda, M., Harl, J., Sattmann, H., & Haring, E. (2011, June). Clausilia dubia (DRAPARNAUD, 1805) in the Eastern Alps: phylogeography and subspecies classification (Gastropoda: Pulmonata: Clausiliidae). [Poster]. 6th Congress of the European Malacological Societies (CEMS), Vitoria-Gasteiz, Spain.
Jaksch, K., Sattmann, H., Kruckenhauser, L., Duda, M., Harl, J., & Haring, E. (2012, December 1). Clausilia dubia – a (bio)diverse alpine land snail [Poster]. 6. Jahrestagung NOBIS Austria, Klagenfurt, Austria.
Jaksch, K., Kruckenhauser, L., Sattmann, H., Duda, M., Harl, J., & Haring, E. (2014, August 18). Biodiversity homemade?! – Clausilia dubia and its various subspecies. Workshop Alpine Land Snails 2014, Johnsbach, Austria.
Jaksch, K., Haring, E., Kruckenhauser, L., Sattmann, H., & Fehér, Z. (2015, November 28). Exploring speciation in the rock-dwelling land snail genus Montenegrina (Clausiliidae, Gastropoda, Pulmonata). 9th Annual Meeting of NOBIS-Austria, Eggenburg.
Jaksch, K., Haring, E., Kruckenhauser, L., Sattmann, H., & Fehér, Z. (2015, November 9). Gaining new insights into speciation processes in rock-dwelling land snails (Montenegrina, Clausiliidae, Gastropoda, Pulmonata). DZG-Jahrestagung 2015, Graz (Austria).