Dreissena grimmi Andrusov, 1890
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publication ID |
https://doi.org/ 10.1016/j.jglr.2019.04.001 |
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DOI |
https://doi.org/10.5281/zenodo.5019020 |
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persistent identifier |
https://treatment.plazi.org/id/5D36A832-FF90-FFCB-FF37-B8027078F871 |
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treatment provided by |
Carolina |
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Dreissena grimmi Andrusov, 1890 |
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Dreissena grimmi Andrusov, 1890
( Fig. 8 View Fig : 6–7).
*1890 Dr.[eissena] Grimmi Andrusov : 233.
2013 Dreissena rostriformis (Deshayes, 1838) – Bogutskaya et al.: 330, fig. 117b.
Dimensions – Max. L 9.9 mm, H 22.5 mm.
Characterization – Relatively flat comma- to tear-shaped Dreissena lacking a keel; the ventral margin is somewhat concave in its upper half; often a byssate depression is developed; the line of semidiameter runs in the middle of the shell; the hinge platform is flat, wide and robust.
Taxonomic notes – This species is commonly known as Dreissena rostriformis (Deshayes, 1838) , a species originally described from Pliocene deposits of Crimea in the Black Sea Basin. Its lectotype (as illustrated in Rosenberg and Ludyanskiy, 1994) shows a different shell shape with almost parallel sides that result in a subquadrangular overall outline. This shape is mirrored by the pallial line on the interior and has not been seen in the dropshaped outlines of late Quaternary Caspian Dreissena . Hence, the name D. rostriformis should be abandoned for late Quaternary Caspian material; the next available name is D. grimmi ( Wesselingh et al., 2019) . In addition, the four subspecies described from the CS ( Bogutskaya et al., 2013) are likely synonyms as indicated by molecular analyses ( Stepien et al., 2013). The latter authors however argue for synonymy with the Black Sea D. bugensis Andrusov, 1897 . That species has a slight but consistent genetic differentiation but incompatible ecological preferences in the Black Sea Basin compared to the Caspian mussels (e.g. salinity preferences of 0–2 psu versus 7–12 psu; Stepien et al., 2013). The introduction of D. bugensis in the Volga catchment in the 1980s has not yet led to reconnection of Caspian population of D. grimmi (pers. obs.), hence we consider these species as separate species.
Ecology – Dreissena grimmi lives in the Middle and South Caspian Basin at depths between 15 and 300 m water depth and salinities between 7 and 12 psu ( Bogutskaya et al., 2013).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Dreissena grimmi Andrusov, 1890
| van de Velde, Sabrina, Yanina, Tamara A., Neubauer, Thomas A. & Wesselingh, Frank P. 2020 |
Dreissena rostriformis (Deshayes, 1838)
| Bogutskaya et al 2013: 330 |
Grimmi
| Andrusov, N. 1890: 233 |