Feeding Ecology of Anurans (Amphibia: Anura) in Bulgaria - A Review
Ivelin A. Mollov*, Ivan D. Delev
University of Plovdiv "Paisii Hilendarski", Faculty of Biology, Department of Ecology and Environmental Conservation, 24 Tsar Assen Str., 4000 Plovdiv, BULGARIA
*Corresponding author: mollov_i@uni-plovdiv.bg
Abstract. A contemporary review of the studies on the trophic spectrum and feeding ecology of the Bulgarian frogs and toads is presented. The analysis of the Bulgarian herpetological literature showed that currently, there are 18 specialized studies on the diet of the Bulgarian anuran species. Of all 16 anuran species, occurring in Bulgaria, 9 (56.25%) have been studied in connection with their trophic spectrum. For four species (25.00%), there is very little data, and for 7 (43.75%), such studies have not yet been done. All Bulgarian species of amphibians are zoophagous, mainly insectivorous. All studied species are general feeders (polyphages), except Bombina variegata, which shows a slight preference to Coleoptera and Bufo bufo and Bufotes viridis, which show slight preference to Formicidae and Coleoptera. Cannibalism was recorded only in Pelophylax ridibundus. The highest values of the trophic niches breadths are recorded in P. ridibundus, R. graeca, R. temporaria, and R. dalmatina. The trophic niches breadths of the other anuran species found in Bulgaria have significantly lower values, the lowest being in Hyla orientalis.
Key words: Anura, frogs, toads, diet, trophic spectrum, synopsis, Bulgaria.

Ecologia Balkanica, 2020, Volume 12, Issue 1 pp. 201-213
Article № eb.20302 [Full text - PDF]pdf

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