Prozorova L.A., Bogatov V.V.
В журнале Hydrobiologia
Год: 2006 Том: 568 Приложение: 1 Страницы: 201-205
Large bivalves represented in Lake Baikal by anodontines of the genus Colletopterum Bgt. are revised on the basis of a morphological examination of specimens preserved in Zoological Institute RAS, St. Petersburg (ZISP) and in Institute of Biology and Soil Science Far east Branch RAS, Vladivostok (IBSS). Shell shape, shape of valves, curvature of the frontal section of the valves, location of umbones and the ratio of shell width to height at the ligament were all taken into consideration. Results indicate that Lake Baikal is inhabited by five species of Colletopterum instead of only the formerly known subspecies C. ponderosum sedakovi (Siemaschko), which we regard as a synonym of C. anatinum (L.) following reidentification of the lectotype of the former. Three European-Siberian species: C. anatinum, C. piscinale (Nilsson), and C. nilssonii (Kuester), are recorded from the Baikal drainage for the first time.Specimens of large Baikalian bivalves in the ZISP collection bearing subspecies names by W. Dybowski are recognized as a mixture of different species. All type specimens were examined to establish their identity. It is concluded that C. sorensianum (W. Dybowski in B. Dybowski, 1913) (syn.: Anodonta complanata sorensiana W. Dybowski in B. Dybowski, 1913; A. cellensis sorensis W. Dybowski erroneous spelling by Shadin, 1938; A. cellensis ssorensis W. Dybowski erroneous spelling by Shadin, 1952) is a valid species characterized by having the flattest shell. Other subspecies names proposed by W. Dybowski's are regarded as junior synonyms of Siberian-European species: C. piscinale (Nilsson, 1822) (syn.: A. cellensis selengensis W. Dybowski in B. Dybowski, 1913; A. nova W. Dybowski, 1913), C. anatinum (L., 1758) (syn.: A. sedakovi Siemaschko, 1848); A. piscinalis sorica W. Dybowski in B. Dybowski, 1913); C. ponderosum (Pfieffer, 1825); C.nilssonii (Kuester, 1842).The key to identification of Baikalian large bivalves are also provided. © Springer 2006.
