Adacna laeviuscula ( Eichwald, 1829 )

van de Velde, Sabrina, Yanina, Tamara A., Neubauer, Thomas A. & Wesselingh, Frank P., 2020, The Late Pleistocene mollusk fauna of Selitrennoye (Astrakhan province, Russia): A natural baseline for endemic Caspian Sea faunas, Journal of Great Lakes Research 46 (5), pp. 1227-1239 : 1230-1231

publication ID	https://doi.org/10.1016/j.jglr.2019.04.001
DOI	https://doi.org/10.5281/zenodo.5018986
persistent identifier	https://treatment.plazi.org/id/5D36A832-FF99-FFC5-FCE2-BBF676F3FE0B
treatment provided by	Carolina (2021-06-23 16:11:41, last updated by Juliana 2025-01-06 17:30:11)
scientific name	Adacna laeviuscula ( Eichwald, 1829 )
status

Treatment

Adacna laeviuscula ( Eichwald, 1829)

( Fig. 4 View Fig : 1).

1986 Adacna (Adacna) laeviuscula (Eichwald, 1831) . – Yakhimovich et al.: 85, pl. 11, fig. 8.

2013 Adacna laeviuscula ( Eichwald, 1829) . – Bogutskaya et al.: 377, fig. 154, photo 48.

Dimensions – max. L 32 mm, H 21 mm.

Characterization – Large, subquadrate to subtrigonal thinshelled flat cardiid with strong posterior and slight anterior gape; dorsal margins relatively straight; relatively few ribs that are thin in juvenile stages and become very flat and separated by barely perceptible grooves in adult stages; hinge is a mostly edentulous, straight and flat ridge; in juvenile specimens a small cardinal tooth may be present that disappears in adult stages.

Ecology – This species has been listed from the entire CS from water depths between 35 and 100 m in salinities of at least 4 psu ( Bogutskaya et al., 2013; Logvinenko and Starobogatov, 1969). The common occurrence of fresh, paired specimens on exposed beaches of the middle Caspian (Turali, Russia; Sirvan, Azerbaijan: pers. observ. FW) demonstrates that A. laeviuscula has viable populations in foreshore settings above storm wave base indicating shallower habitats than previously reported.

References

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.

Eichwald, E., 1829. Zoologia specialis quam expositis animalibus tum vivis, tum fossilibus potissimum Rossiae in universum et Poloniae in specie, in usum lectionum publicarum in Universitate Caesarea Vilnensi habendarum. Pars prior propaedeuticam zoologiae atque specialem heterozoorum expositionem continens. Joseph Zawadzki, Vilnius.

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.

Figures

Fig. 4. Cardiidae. (1) Adacna laeviuscula; (a) RGM.1309812 LV; (b) RGM.1309813 RV. (2) Adacna minima; (A) RGM.1309811 LV; (b) RGM.1309810 RV. (3) Monodacna semipellucida, RGM.1309802 RV; (4) Monodacna caspia s.l. (a) RGM.1309803 LV; (b) RGM.1309804 RV. (5) Hypanis plicata; (a) RGM.1309808 LV (b) RGM.1309809 RV. Scale bars = 1 cm.