Shiny pepper clams
| Shiny pepper clams | ||||||||||||
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![Shiny pepper clams (Abra nitida) (from Adams & Adams 1858: Plate 105, Fig. 4 [1])](https://de.wikipedia.org/wiki/Datei:Adams%26Adams_1858_pl_105_fig4_Abra_nitida.png)
Shiny pepper clams ( Abra nitida ) (from Adams & Adams 1858: Plate 105, Fig. 4) |
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| Scientific name | ||||||||||||
| Abra nitida | ||||||||||||
| ( OV Müller , 1776) |
The Shining pepper shell ( Abra nitida ) is a bivalve mollusc of the family of pepper shells (Semelidae). It also occurs in the North Sea .
features
The slightly unevenly flattened, flattened housing , egg-shaped in outline, can be up to 13 millimeters long. They are slightly unequal, the vertebrae sit well behind the center line in relation to the length of the case. The rear almost straight dorsal margin is shorter than the anterior dorsal margin, but they form an obtuse angle to each other. The rear end is trimmed. The front edge is wide and regularly rounded. It merges into the initially broadly rounded ventral margin, which runs almost straight towards the rear end. The ligament lies internally and externally. The external ligament is a small brown band. The inner ligament sits on an elongated, spoon-like chondrophore . The lock has a small cardinal tooth in the left flap and a very weak anterior and posterior lateral tooth. In the right valve two cardinal teeth and a weak anterior and posterior lateral tooth are developed. There are two sphincters. The mantle bay is very deep and ends roughly in the middle between the vertebra and the anterior sphincter.
The pearlescent, shimmering white shell is thin-walled and fragile. The surface is ornamented with fine concentric lines. The periostracum is only a very thin coating. The inside edge of the housing is smooth.
Similar species
The shiny pepper clam is similar to the long pepper clam ( Abra prismatica ), but is shorter and more compact (smaller length / height ratio 1.9 to 2.1)), and the vertebrae sit a little further towards the center.
Geographical distribution and habitat
The distribution area of the glossy pepper clam stretches from southern Iceland , northern Norway , along the coasts of the eastern Atlantic to Morocco . It is also found in the Mediterranean and the North Sea.
It lives in muddy soils between a few meters and 4600 meters water depth, usually up to about 200 meters water depth.
Taxonomy
The taxon was introduced into literature in 1776 by Otto Friedrich Müller as Mya nitida . Today it is generally placed in the genus Abra Lamarck, 1818. The species appears in the older literature under the younger synonym Abra intermedia (Thompson, 1845).
supporting documents
literature
- Fritz Gosselck, Alexander Darr, Jürgen HJ Jungbluth, Michael Zettler: common names for mollusks of the sea and brackish water in Germany. Mollusca, 27 (1): 3-32, 2009 PDF
- Fritz Nordsieck : The European sea shells (Bivalvia). From the Arctic Ocean to Cape Verde, the Mediterranean Sea and the Black Sea. 256 pages, Gustav Fischer Verlag, Stuttgart 1969
- Guido Poppe. Yoshihiro Goto: European Seashells Volume 2 (Scaphopoda, Bivalvia, Cephalopoda) . 221 pp., Verlag Christa Hemmen, Wiesbaden 1993 (2000 unc. Reprint), ISBN 3925919104 (p. 116)
- Rainer Willmann: Mussels of the North and Baltic Seas. 310 pp., Neumann-Neudamm, Melsungen 1989, ISBN 3-7888-0555-2 (p. 156)
On-line
Individual evidence
- ^ Henry Adams, Arthur Adams: The genera of recent Mollusca; arranged according to their organization. In three volumes. Panel tape. SI-CXXXVIII, Pl. I-CXXXVIII (= 1-138), London, Van Voorst, 1858 Online at www.biodiversitylibrary.org (Pl. 105, Fig. 4a, b).
- ↑ Otto Friedrich Müller: Zoologiae Danicae prodromus, seu animalium Daniae et Norvegiae indigenarum characteres, nomina, et synonyma imprimis popularium. S. I-XXXII, 1-274, Havnia / Copenhagen, Hallager, 1776 Online at www.biodiversitylibrary.org (p. 245)
- ↑ MolluscaBase: Abra nitida (da Costa, 1778)
