Theodoxus transversalis
Description
3. Theodoxus transversalis (C. Pfeiffer, 1828)
Findings in Serbia.
Neritina transversalis: Möllendorff (1873).
Theodoxus transversalis: Hesse (1929); Arambašić (1994); Karaman & Živić (2001); Karaman (2001, 2005); Simić & Simić (2004); Karaman & Karaman (2007); Novaković (2012); Marković et al. (2014); Savić et al. (2016); Marković (2020 pers. comm.).
Common name. Striped nerite.
Morphology. Medium-sized species. Oval shaped shell has dimensions up to 11 mm. Colouration pattern is greyish or yellowish-grey with three distinct dark transversal stripes. Occasionally colouration can be uniformly brown, or black. Operculum is reddish and resembles T. fluviatilis, but it lacks enlarged apophysal plate. For more details see Glöer (2019: 53, fig. 43).
Distribution and ecology. The striped nerite has mostly a Danuban distribution (Sólymos & Fehér 2011). In the past it was more common in the larger rivers of central Europe, including the Danube itself (Fehér et al. 2012). Reminders of its wider distribution range are a few isolated recent populations, viz., populations from the Dojran Lake (southern Balkan; Fischer et al. 2009), and from the Crete Island (Aegean Sea; Szerkowski, 1998). Similar to other species of the genus, it prefers hard substrate (rock, vegetation, man-made materials etc.). Smaller watercourses, and tributaries of the Danube River are considered as its main habitats in Serbia (Marković et al. 2014). Stable populations have been recorded in the Velika Morava and Nišava Rivers.
Other remarks. Relict species of the genus (Bunje & Lindberg 2007). Due to decreasing population trend, the species is considered as EN on the IUCN list (Sólymos & Fehér 2011). This snail is listed in the 92/43 EEC Directive (annexes II and IV; Directive, 1992).
Subclass Caenogastropoda Cox,1960
Order Architaenioglossa Haller, 1892
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- C. Pfeiffer
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Cycloneritimorpha
- Family
- Neritidae
- Genus
- Theodoxus
- Species
- transversalis
- Taxon rank
- species
- Taxonomic concept label
- Theodoxus transversalis (Pfeiffer, 1828) sec. Marković, Gojšina, Novaković, Božanić, Stojanović, Karan-Žnidaršič & Živić, 2021
References
- Mollendorff, O. (1873) Zur Molluskenfauna von Serbien. Malakozoologische Blatter, 21, 129 - 149.
- Hesse, P. (1929) Schnecken aus dem nordlichen Serbien. Archiv fur Molluskenkunde, 61 (1), 230 - 240.
- Arambasic, M. (1994) Composition and structure of mollusc fauna of the Yugoslav part of the Danube and saprobity estimation. In: Jankovic, D. & Jovicic, M. (Eds.), The Danube in Yugoslavia: Contamination, protection and exploitation. Institute for Biological Research Sinisa Stankovic, Beograd, pp. 124 - 130.
- Karaman, B. & Zivic, I. (2001) Fauna Gastropoda (Mollusca) nekih fruskogorskih potoka (Vojvodina, Srbija). Zbornik radova Zasavica 2001, 1, 201 - 207. [in Serbian]
- Simic, V. M. & Simic, S. B. (2004) Macroinvertebrates and fishes in the part of the Danube flowing through the iron gate national park and possibilities of their protection under in situ and ex situ conditions. Archives of Biological Sciences, 56 (1 - 2), 53 - 57. https: // doi. org / 10.2298 / ABS 0402053 S
- Karaman, B. & Karaman, G. (2007) Catalogus of the freshwater snails (Mollusca, Gastropoda) of Serbia. Crnogorska Akademija Nauka i Umjetnosti Glasnik Odjeljenja prirodnih nauka, Podgorica, 17, 167 - 222.
- Novakovic, B. (2012) Indicative ecological status assessment of the Juzna Morava River based on aquatic macroinvertebrates. Water research and management, 2 (4), 45 - 50.
- Markovic, V., Tomovic, J., Ilic, M., Kracun-Kolarevic, M., Novakovic, B., Paunovic, M. & Nikolic, V. (2014) Distribution of the species of Theodoxus Montfort, 1810 (Gastropoda: Neritidae) in Serbia: an Overview. Acta Zoologica Bulgarica, 66 (4), 477 - 484.
- Savic, A., Randelovic, V., Dordevic, M. & Pesic, V. (2016) Assemblages of freshwater snails (Mollusca: Gastropoda) from the Nisava River, Serbia: ecological factors defining their structure and spatial distribution. Acta Zoologica Bulgarica, 68 (2), 235 - 242.
- Gloer, P. (2019) The freshwater gastropods of the West-Palaearctis. Biodiversity Research Laboratory, Hetlingen, 399 pp.
- Solymos, P. & Feher, Z. (2011) Theodoxus transversalis. The IUCN Red List of Threatened Species, 2011, e. T 21726 A 9314252. [downloaded 24 March 2021] https: // doi. org / 10.2305 / IUCN. UK. 2011 - 2. RLTS. T 21726 A 9314252. en
- Feher, Z., Albrecht, C., Sereda, S. & Krizsik, V. (2012) Extremely low genetic diversity in the endangered striped nerite, Theodoxus transversalis (Mollusca, Gastropoda, Neritidae) - a result of ancestral or recent effects? North-western Journal of Zoology, 8 (2), 300 - 307.
- Bunje, P. M. & Lindberg, D. R. (2007) Lineage divergence of a freshwater snail clade associated with post-Tethys marine basin development. Molecular Phylogenetics and Evolution, 42 (2), 373 - 387. https: // doi. org / 10.1016 / j. ympev. 2006.06.026
- Directive, H. (1992) Council Directive 92 / 43 / EEC of 21 May 1992 on the conservation of natural habitats and of wild fauna and flora. Official Journal of the European Union, 206, 7 - 50.