Buicu, Florin - Cristea, Doina (szerk.): Satu Mare. Studii şi comunicări. Seria ştiinţele naturii 9. (2008)
Ştiinţele naturii
Satu Mare - Studii şi Comunicări Seria Ştiinţele Naturii Voi. IX (2008) (Cogălniceanu et al. 2000) that feed only with mobile preys (Zimka 1966). In this case, the vegetal fragments are considered to be accidentally swallowed together with the followed moving prey (Whitaker et al. 1977, Stebbins and Cohen 1995). Shed-skin can be considered as being similar to plant fragments, and thus swallowed together with the moving prey. Some consider that their consumption can be regarded as a way of recycling epidermal protein, because of their rich protein content (Weldon et al. 1993). There is a negative correlation in our case between the consumption of shed-skin and vegetal fragments. This suggests that shed-skins are consumed exclusively in water, while plant consumption is closely related to the terrestrial hunting. References Brooks J.S., Calver C.M., Dickman R.C., Meathrel E.C., Bradley S.J., 1996, Does intraspecific variation in the energy value of a prey species to its predators matter in studies of ecological energetics? A case study using insectivorous vertebrates, Ecoscience, 3 (3), pp. 247-251 Chinery, M., 1998, Collins guide to the insects of Britain and Western Europe. Harper Collins Publishers, London. Cogălniceanu D., Aioanei F., Bogdan M., 2000, Amfibienii din România, Determinator, Ed. Ars Docendi, Bucureşti, 63-66 Duellmann E., Trueb L., 1994, Biology of Amphibians. John Hopkins Press Ltd. London Evans M., Lampo M., 1996., Diet of Bufo marinus in Venezuela. J. Herpetol., 30, 73 — 76. Ferenti, S., Citrea, L., Nagy, H., Indrei, Cr., Bandi, F. 2007. Analiza comparativă a spectrului trofic a patru populaţii hibride între Bombina bombina şi B.variegata din bazinul hidrografic a Râului Tur (Jud. Satu-Mare, România). Biharean Biologist, 1, 15-22. Ghiurcă D., Zaharia L., 2005, Data regarding the trophic spectrum of some population of Bombina variegata from Bacău county, North — Western Journal of Zoology, 1,15 — 24 Griffiths R. A., 1986, Feeding niche overlap and food selection in smooth and palmate newts, Trimms vulgaris and Trimms helveticus, at a pond in Mid — Wales. Journal of Animal Ecology, 55, 201 -214. Groza M. L, Szeibel N., Letai V., Toth A., Radu N. R., 2006, Trophical spectrum of a Bombina variegata population from Vadu Crişului (Bihor county, Romania), Analele Universităţii din Oradea, Fase. Biologie, 13, 32 -34. Huey R. B., Pianka E. R., 1981, Ecological consequences of foranging mode. Ecology 62 (4), 991 - 999. Inger R. F., Colvell R. K., 1977, Organization of contagious communities of amphibians and reptiles in Thailand. Ecological Monographs 47: 229-253. Itämies J., Koskela P., 1970, On the diet of the common frog (Rana temporaria L.). Aquilo Ser. Zook, 10, 53 — 60. Ledere J., Courtois D., 1993, A simple stomach flushing method for ranid frogs. Herp. Review, 24, 142 — 143. Legier J. N., Sullivan L. J., 1979, The application of stomach — flushing to lizzards and anurans. Herpetologica, 35, 107 — 110. Madej Z., 1964. Studies on the fire — bellied toad (Bombina bombina) and yellow — bellied toad (Bombina variegata) of upper Silezia and Moravian Gate. Acta Zool. Cracow. 3, 291- 334. Madej Z., 1973, Ecology of European fire-bellied toads (Bombina Oken 1816). Przgel. Zook Wroclaw, 17, 200 - 204. Opatrny E., 1980, Food sampling in live amphibians. Vest. cs. Spolec. zooh, 44, 268 — 271. Paulian R., 1971, Adas des larves d’insectes de France. Paris, 199p. Perry G., Pianka E. R., 1997, Animal foraging: past, present and future. TREE. 12 (4), 360 — 364. Peter V. L, Telcean L, Sere E., Purgea h, Bogdan H., 2005, The comparative analysis of the trophic spectrum of three populations of Bombina variegata from the Şuştiu area (Bihor county, Romania), Analele Univ. din Oradea, Fase. Biologie., 12, 63 - 69 | Peter V. I., Citrea L., Aszalós A., Radu N. R., Batta Zs., Szabó M., Cioara C., 2006, Analiza comparativă a apectrului de hrănire a două populaţii de Bombina variegata din Băiţa Plai (judeţul Bihor, Romania), Analele Universităţii din Oradea, Fascicula Biologie, 13, 18-23 Radu, Gh. V., Radu, V. V., 1967, Zoologia Nevertebratelor, voi. 2 Ed. Did şi Ped. Bucureşti, 1 — 708. Sas I., Covaciu Marcov S. D., Cupşa D., Schircanici A., Peter V. L, 2004a, The study of the trophic spectrum of Bombina bombina (Linnaeus 1761) populations in the Ier Valley area (county of Bihor, Romania), Nymphaea, Folia Naturae Bihariae, 31, 91 — 109. Sas L, Covaciu — Marcov S. D., Cupşa D., Kovács E. H., Gabora M., 2004b, Data about the trophic spectrum of a population of 20
