On the presence of Rana lessonae in Rumania Cog � lniceanu Dan, Tesio C � lin University of Bucharest, Faculty of Biology, Splaiul Independentei 91-95, 76201 - Bucharest, Rumania Despite intensive study during the last 30 years, the exact distribution of green frogs of the Rana esculenta complex in central and eastern Europe is still unknown. Three forms of green frogs occur in broad sympatry. Extensive breeding experiments (Ber- ger, 1973), electrophoretical (Tunner, 1973; Uzzell and Berger, 1975) and biometrical studies (Wijnands and van Gelder, 1976) indicated that two of them, Rana lessonae and Rana ridibunda, are good biological species, while the third, Rana esculenta, is their hybrid. Since the publication by Fuhn (1960) of the volume Amphibia in the Rumanian Fauna Series, a book that gathered all the data for that time, many papers have been published on the distribution of green frogs in Rumania (Bazilescu et al., 1980; Cruce, 1971; Fuhn, 1971, 1975; Miclutd, 1970; Popescu, 1973; Sin, 1972; $ova, 1970; ?ova and Täräbu?ä, 1963; Tesio and Marinescu, 1982; Vancea, Fuhn and Stu- gren, 1989; Vasiliu-Suceveanu, 1968). Species identification was based mostly on morphology, only two papers taking into account biometrical data (Vancea, Fuhn and Stugren,
Amphibia-Reptilia – Brill
Published: Jan 1, 1993
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