Dreissena caspia Eichwald 1855
Authors/Creators
- 1. Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands
- 2. Moscow State University, Faculty of Geography, Leninskie Gory, 1, 119991 Moscow, Russia
- 3. Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands & Department of Animal Ecology and Systematics, Justus Liebig University, Heinrich-Buff-Ring 26 - 32 IFZ, 35392 Giessen, Germany
Description
Dreissena caspia Eichwald, 1855
(Fig. 8: 1–3).
*1855 Dreissena caspia Eichwald: 311 –312, pl. 10, figs. 19–21.
2013 Dreissena caspia Eichwald, 1855 – Bogutskaya et al.: 321, fig. 109.
Dimensions – max. L 7.4 mm, H 22.7 mm.
Characterization – Elongate, somewhat flat Dreissena with rounded margins; keel low or absent resulting in rounded crossprofile. The semidiameter is initially located at the dorsal margin but in sub adult stages crosses to the ventral margin. In adult stages, the semidiameter becomes less pronounced and is located in the middle of the shell. The posterodorsal margin is broadly rounded (and not subangular as in D. elata), the posterior margin is rounded and the anterior margin is straight to slightly round. The hinge platform is flat and solid.
Ecology – Dreissena caspia is a filter feeder that used to be common all over the CS but is now possibly extinct (Bogutskaya et al., 2013). The species seems to be completely outcompeted by Mytilaster minimus (Logvinenko and Starobogatov, 1969). The species was most abundant at depths up to 40 m (Logvinenko and Starobogatov, 1969), and in a salinity range between 2 and 8 psu (Bogutskaya et al., 2013).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Eichwald
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Veneroida
- Family
- Dreissenidae
- Genus
- Dreissena
- Species
- caspia
- Taxon rank
- species
- Taxonomic concept label
- Dreissena caspia Eichwald, 1855 sec. de, Yanina, Neubauer & Wesselingh, 2020
References
- Eichwald, E., 1855. Zur Naturgeschichte des Kaspischen Meeres [The natural history of the Caspian Sea]. Nouv. Mem. Soc. Imp. Nat. Moscou 10, 283 - 323.
- Bogutskaya, N. G., Kijashko, P. V., Naseka, A. M., Orlova, M. I., 2013. Identification keys for fish and invertebrates. Volume 1: Fish and molluscs. KMK Scientific Press Ltd., St. Petersburg - Moscow.
- Logvinenko, B. M., Starobogatov, Y. I., 1969. Mollusca, in: Birshtein, Y. A., Vinogradov, L. G., Kondakov, N. N., Kuhn, M. S., Astakhova, T. V., Romanova, N. N. (Ed.), Atlas Bespozvonochnykh Kaspiyskogo Morya [Atlas of Invertebrates of the Caspian Sea]. Pishchevaya Promyshlennost (Vsesoyuznyi Nauchno-issledovatel'skii Institut Morskogo Rybnogo Khozyaistva i Okeanografii), Moscow, pp. 308 - 385.