Striped diaper snail
| Striped diaper snail | ||||||||||||
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Striped diaper snail ( Vertigo substriata ) |
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| Vertigo substriata | ||||||||||||
| ( Jeffreys , 1833) |
The striped diaper snail ( Vertigo substriata ) is a type of snail from the family of the diaper snail (Vertiginidae) in the suborder of the land snail (Stylommatophora).
features
The right-hand wound, squat elliptical shell of the striped diaper snail measures 1.5 to 2.0 mm in height and 0.99 to 1.17 mm in width. The 3.9 to 4.8 strongly arched passages of the brown colored case are separated from each other by a deep seam. The surface of the case shows a very fine, regular ribbing, especially on the middle turns, which makes the surface shimmer. The thin mouth edge is only slightly bent outwards. On the outside, there is a slight thickening behind the lip. The mouth is reinforced with five to six teeth: two parietal teeth, one to two columellar teeth and two palatal teeth. The housing is yellowish to yellowish brown in color.
Similar species
The striped diaper snail differs from all other Vertigo species with its very compact shell , whose shell is significantly taller in relation to its width and thus overall slimmer.
Geographical distribution and habitat
The distribution area of the species extends from the British Isles across Central Europe, the northern Balkan Peninsula, the Crimea to the Caucasus. An isolated occurrence was found in the Altai Mountains. In Scandinavia, the area extends up to 68 ° north latitude. In the south it extends to the Pyrenees and northern Spain (with an isolated occurrence in the Sierra Nevada), and to northern Italy. The individual occurrences are very scattered. In Poland the species occurs up to 1000 m above sea level, in Switzerland up to 2000 m.
The species prefers moist locations such as wet forests, swamp forests, swamp and silting zones of standing water, wet meadows and lake shores. At higher altitudes, it occurs particularly on weakly marshy meadows. Drier locations such as stone walls and stone walls are rarely inhabited. It lives under moss, rotting plant parts and in the root felt of plants. The striped diaper snail also tolerates acidic soils.
Way of life
Egg-laying usually begins in May and ends in August. A start as early as the end of April or the end in September is less common. The animals laid an egg about two days apart. Occasionally one egg was produced every day, the maximum was even 32 eggs per month. In the period from May to August, longer breaks, often several weeks, were taken between periods of increased oviposition. The total number of eggs produced during an egg-laying season varied widely from 7 to 82 eggs. Specimens that laid eggs during two seasons produced 110 to 120 eggs.
The diameter of the eggs is 0.56 to 0.72 mm. The eggs were mostly laid in the single-cell stage, more rarely developed embryos were also observed. The development time at 23 ° C was about 12 to 13 days, but the development time varies within comparatively wide limits regardless of the temperature. The young hatch with a housing that consists of 1.2 to 1.25 turns and has a diameter of 0.39 to 0.56 mm. Around 15 to 20% of the young became sexually mature in the same year. Only about 50 to 60% of the hibernating animals formed a light growing strip in the winter rest. Growth will resume in late May or early June. The animals live to be one to two years old, more rarely up to three years.
Taxonomy
The taxon was first described in 1833 by John Gwyn Jeffreys as Alaea substriata . The fauna of Europaea has a synonym :
- Vertigo substriata var. Sextana Gredler, 1872
Danger
In Germany the species is endangered (hazard category 3). In England, stocks have decreased significantly. The reason given is intensive farming. The species does not tolerate major human interference in its habitat.
supporting documents
literature
- Klaus Bogon: Land snails biology, ecology, biotope protection. 404 p., Natur Verlag, Augsburg 1990 ISBN 3-89440-002-1 (p. 105)
- Rosina Fechter and Gerhard Falkner: molluscs. 287 p., Mosaik-Verlag, Munich 1990 (Steinbach's Nature Guide 10) ISBN 3-570-03414-3 (p. 140)
- Michael P. Kerney, RAD Cameron & Jürgen H. Jungbluth: The land snails of Northern and Central Europe. 384 pp., Paul Parey, Hamburg & Berlin 1983 ISBN 3-490-17918-8 (p. 90)
- Stanisław Myzyk: Contribution to the biology of ten vertiginid species. Folia Malacologica, 19 (2): 55-80, Warsaw 2011 doi : 10.2478 / v10125-011-0004-9 .
- Beata M. Pokryszko: The Vertiginidae of Poland (Gastropoda: Pulmonata: Pupilloidea) - a systematic monograph. Annales Zoologici, 43 (8): pp. 133-257, Warsaw 1990.
- Francisco W. Welter-Schultes: European non-marine molluscs, a guide for species identification = identification book for European land and freshwater mollusks. A1-A3 S., 679 S., Q1-Q78 S., Göttingen, Planet Poster Ed., 2012 ISBN 3-933922-75-5 , ISBN 978-3-933922-75-5 (p. 129)
Individual evidence
- ↑ Stefan Meng: New data on the distribution of the Vertiginidae (Gastropoda: Pulmonata) in Central Asia. Mollusca, 26 (2): pp. 207-219, Dresden 2008 PDF
- ^ John Gwyn Jeffreys: A supplement to the "Synopsis of testaceous pneumonobranchous Mollusca of Great Britain". Transactions of the Linnean Society of London, 16: pp. 505-524 (1833) [online at www.biodiversitylibrary.org].
- ↑ Fauna Europea: Vertigo substriata
- ^ Vinzenz Maria Gredler: Second gleanings and corrections to Tyrol's land and fresh water conchylia. Bulletin of the German Malakozoological Society, 4, pp. 66–71, Frankfurt / Main 1872 (p. 70) online at www.biodiversitylibrary.org
- ↑ JH Jungbluth, D. von Knorre (with the assistance of U. von Bössneck, K. Groh, E. Hackenberg, H. Kobialka, G. Körnig, H. Menzel-Harloff, H.-J. Niederhöfer, S. Petrick, K Schniebs, V. Wiese, W. Wimmer, ML Zettler): Red list of internal mollusks [snails (Gastropoda) and mussels (Bivalvia)] in Germany. Announcements of the German Malacozoological Society, 81: pp. 1–28, Frankfurt / M. 2009 PDF ( Memento of the original from June 16, 2013 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (1.3 MB)
