Food habit of Rana (Pelophylax) kl. esculenta females in a new recorded E-system population from a forested habitat in nort-western Romania
Food habit of Rana (Pelophylax) kl. esculenta females in a new recorded E-system population from a forested habitat in nort-western Romania
This is the first record of a green frog Rana (Pelophylax) kl. esculenta population from the E-system in the north-western part of Romania. From April to July 2005 we analysed the trophic spectrum of 84 Rana kl. esculenta females, extracting and identifying a total number of 801 prey items. Beside animal preys, plant materials and remains of shed skin were identified in the stomach contents. We did not find any Rana kl. esculenta individuals with empty stomachs. The importance of different animal prey categories varied in certain periods of the study. In the stomach contents collected in July we identified 2 adult amphibians. The analysed Rana kl. esculenta individuals forage mainly on land. The abundance of aquatic preys was higher only at the first sampling event.
___
- Berger, L. 1973. Systematics and hybridization in European green frogs of Rana esculenta Complex. Journal of Herpetology 7: 1-10
- Borkin, L.J., Caune, I.A., Pikulik, M.M. and Sokolova, M. 1986. Distribution and structure of the green frog complex in the USSR, In: Studies in Herpetology (ed. Roczek, Z.), Prague, pp. 675-678
- Cogalniceanu, D. and Tesio, C. 1993. On the presence of Rana lessonae in Roumania. Amphibia-Reptilia 14: 90-93
- Cogalniceanu, D., Palmer, M.W. and Ciubuc, C. 2000a. Feeding in Anuran comunities on islands in the Danube floodplain. Amphibia- Reptilia 22: 1-19
- Cogalniceanu, D., Aioanei, F. and Bogdan, M. 2000b. Amphibians from Romania. Determination Key. Ars Docendi, Bucharest, Romania [In Romanian]
- Covaciu-Marcov, S.D., Cupşa, D. and Ghira, I. 2000. Trophical spectrum of a Rana ridibunda ridibunda Pallas 1771 population from Cefa (Bihor county, România). Bacau Studii si Cercetari Biolologie 5: 107-115
- Covaciu-Marcov, S.D., Sas, I. and Cicort-Lucaciu, A.S. 2007. Distribution of the pool frog, Rana lessonae, in the North-Western Romania. Biota 8: 5-10
- Covaciu-Marcov, S.D., Sas, I. and Cupsa, D. 2008. On the presence of Rana (Pelophylax) lessonae in south-western Romania: distribution, biogeographical signification and status. North- Western Journal of Zoology 4: 129-133
- Çiçek, K. and Mermer, A. 2006. Feeding Biology of the Marsh Frog, Rana ridibunda Pallas 1771, (Anura, Ranidae) In Turkey’s Lake District. North-Western Journal of Zoology 2: 57-72
- Çiçek, K., Tok, C.V., Mermer, A., Tosunoğlu, M. and Ayaz, D. 2007. Food Habits of the Lycian Salamander, Lyciasalamandra fazilae (Başoğlu and Atatür, 1974): Preliminary data on Dalyan population. North-Western Journal of Zoology 3: 1-8
- Graf, J.D. and Polls-Pellaz, M. 1989. Evolutionary genetics of the Rana esculenta complex. In: Evolution and Ecology of Unisexual Vertebrates (eds. Dawley, R.M., Bogart, J.P.), New York State Museum Publications (Bulletin) 466, New-York, pp. 289-302
- Günther, R. 1997. Rana kl. esculenta (Linnaeus 1758). In: Atlas of Amphibians and Reptiles in Europe (ed. Gasc, J.P.), Museum National D’Histoire Naturelle, Paris, pp. 138-139
- Hotz, H., Beerli, P. and Spolsky, C. 1992. Mitochondrial DNA reveals formation of nonhybrid frogs by natural matings between hemiclonal hybrids. Molecular Biology Evolution 9: 610-620
- Kovács, E.H., Sas, I., Covaciu-Marcov, S.D., Hartel, T., Cupsa, D. and Groza, M. 2007. Seasonal variation in the diet of a population of Hyla arborea from Romania. Amphibia-Reptilia 28: 485-491
- Kovács, T. and Török, J. 1995: Dietary responses by edible frog (Rana esculenta complex) to wetland habitat change in Hungary. In: Wetlands, Biodiversity and Development. (ed. Giesen, W.). Kuala Lumpur, Malaysia, pp. 317-333
- Löw, P., Török, J., Sass, M. and Csörg , T. 1990. Feeding of amphibian species from the Kis-Balaton Nature Reserve. Állatani Közlemenyek 76: 79-89 [In Hungarian]
- Löw, P. and Török, J. 1998. Prey size selection and food habits of Water Frogs and Moor Frogs from Kis-Balaton, Hungary (Anura: Ranidae). Herpetozoa 11: 71-78
- Sas, I., Covaciu-Marcov, S.D., Cupşa, D., Cicort-Lucaciu, A.Şt. and Antal, B. 2005a. Food habits of Rana lessonae and Rana arvalis in Covasna county (Romania). Enviroment & Progress 5: 359-367
- Sas, I., Covaciu-Marcov, S.D., Pop, M., Ile, R.D., Szeibel, N. and Duma, Cr. 2005b. About a closed hybrid population between Bombina bombina and Bombina variegata from Oradea (Bihor county, Romania). North-Western Journal of Zoology 1: 41-46
- Schmidt, B.R. 1993. Are hybridogenetic frogs cyclical partenogens? TREE, Ecolology Evolution 8: 271-272
- Shannon, C.E and. Weaner, W. 1949. The mathematical theory of communication. University of Illinois Press, Urbana.
- Sos, T. 2007. Notes on distribution and current status of herpetofauna in the northern area of Braşov County (Romania). North-Western Journal of Zoology 3: 34-52
- Strugariu, Al., Gherghel, I., Hut,uleac-Volosciuc, M.V., Sahlean, T., Sas, I. and Puşcaşu, Cr.M. 2006. Preliminary data concerning the distribution of amphibian fauna in Suceava county (Romania). Analele Universit ii din Oradea, Fascicula Biologie 13: 39-47
- Tunner, H.G. and Heppich-Tunner, S. 1991. Genome exclusion and two strategies of chromosome duplication in oogenesis of a hybrid frog. Naturwissenschaften 78: 32-34
- Uzzell, T., Hotz, H. and Berger, L. 1980. Genome exclusion in Gametogenesis by an interspecific Rana Hybrid: Evidence from electrophoresis of individual oocytes. Journal of Experimental Zoology 214: 251-259
- Vancea, Şt., Fuhn, I.E. and Stugren, B. 1989. Sur la composition taxonomique du peuplement de grenouilles vertes (complexe Rana esculenta L.) de Roumanie. Studia Universitatis Babeş-Bolyai Biologia 34: 69-77
- Weldon, P.J., Demeter, B.J. and Rosscoe, R. 1993. A survey of shed skin-eating (dermatophagy) in amphibians and reptiles. Journal of Herpetology 27: 219-228
- Wijnands, H.E.J. and VanGelder, J.J. 1976. Biometrical and serological evidence for the occurrence of three phenotypes of green frogs (Rana esculenta complex) in the Netherlands. Netherland Journal of Zoology 26: 414-424
- Zar, J.H. 1999. Biostatistical analysis, 4nd Edition. New Jersey, Prentice Hall.