Population Ecology of the Caucasian Parsley Frog (Pelodytes caucasicus Boulenger) in the Borjomi Canyon

A. T. Chubinishvili, R. K. Gokhelashvili, D. N. Tarkhnishvili


Certain aspects of the population ecology of Pelodytes caucasicus were studied. Breading season of the Caucasian parsley frog lasts from the second half of May up to the end of September. One female deposits from 100 up to 750 eggs. There is a positive correlation between body size of the female and fecundity. As usual tadpoles stay in basins until following spring. Body size of the metamorphosing tadpoles depends on physical characters of the basin and larvae density. Survivability of tadpoles from egg until metamorphosis in different basins varies from 0.5 up to 10%. Individuals attain sexual maturity when 2 – 3 years old. Males of the Caucasian parsley frog can live up to 6 years. We did not found females, elder than 4 years old. The population renews more then by half annually. Population dynamics of the Caucasian parsley frog in general corresponds to the typical model of «sources and sinks».


Pelodytes caucasicus; population ecology; age-distribution; phenology of reproduction; survivability

Full Text:



Bannikov A. G. and Drozdov N. N. (1975), «On breeding biology of the Caucasian parsley frog», Ékologiya, No. 2, 22 – 24 [in Russian].

Borkin L. Ya. and Anisimova E. V. (1986), «The vertebral structure and vocal sacks in the Caucasian parsley frog (Pelodytes caucasicus) and its taxonomic position», Trudy Zool. Inst. Leningrad, 158, 59 – 76 [in Russian].

Chanturishvili P. S. (1940), «Some materials about biology and morphology of the Caucasian parsley frog», in: Biol. Proc. of the Narkompros Gruszii Station [in Russian].

Darevsky I. S., Drozdov N. N., and Orlova V. F. (1971), «The new data about geographic distribution of the Caucasian parsley frog — Pelodytes caucasicus Boulenger (Amphibia, Salientia)», Vestn. Zool., No. 3, 77 – 78 [in Russian].

Gill D. E. (1978), «The metapopulation ecology of the red-spotted newt Nothoptalmus viridescens (Rafinesque)», Ecol. Monogr., 48(2), 148 – 166.

Golubev N. S. (1981), «Reproduction of Pelodytes caucasicus (Amphibia, Pelobatidae)», Zool. Zh., 60(11), 1645 – 1648 [in Russian].

Golubev N. S. (1985), Caucasian Parsley Frog — Pelodytes caucasicus Boulenger (Distribution, Morphology, and Ecology). Author’s Abstract of Candidate’s Thesis, Izd. AN SSSR, Leningrad [in Russian].

Gosner K. L. (1960), «A simplified table for staging anuran embryos and larvae with notes on identification», Herpetologica, 16, 183 – 190.

Ishchenko V. G. (1979), «Structure and numbers of the population of Rana arvalis in the subzone of preforest – steppe forests of Transurals», in: Ecological Research in Forest and Steppe Biogeocenoses of Transurals. Information of Galitskii Station, Izd. AN SSSR, Sverdlovsk, pp. 39 – 46 [in Russian].

Ishchenko V. G. (1989) «Ecological mechanisms to maintain stability of amphibian population», Ékologiya, No. 2, 12 – 19 [in Russian].

Koli G. (1977), Analysis of Vertebrate Populations, Wiley.

Lukina G. P. and Koneva V. A. (1977), «On the Caucasian parsley frog biology», in: Problems of Herpetology, Nauka, Leningrad, pp. 137 – 138 [in Russian].

Pulliam H. R. (1988), «Sources, sinks and population regulation», Am. Naturalist, 132(5), 652 – 661.

Smirina E. M. (1989), «The age determination method in amphibia and reptile by layers in bones», in: Manual on Investigation of Amphibia and Reptilia, Kiev, pp. 143 – 152 [in Russian].

Tarkhnishvili D. N. (1994), «Spatial structure of the population of Rana macrocnemys in the Borjomi canyon». Ékologiya (in press) [in Russian].

Toxopeus A. G., Olim M., and Arntzen I. W. (1993), «Reproductive biology of the parsley frog, at the northernmost part of its range», Amphibia–Reptilia, 14, 131 – 147.

Tuniev B. S. (1985), «Rear and vanishing amphibia and reptile of the Caucasian reserve», in: Ecological Research at Caucasus Biosphere Reserve, Izd. RGU, Rostov-on-Don, pp. 104 – 115 [in Russian].

Tuniev B. S. (1987), Herpetological Fauna of the Caucasian Reserve. Author’s Abstract of Candidate’s Thesis, Leningrad [in Russian].

Tuniev B. S. (1989), «Distribution, biology and ecology of Pelodytes caucasicus on West Caucasus», in: Problems of Herpetology, Kiev, pp. 259 – 260 [in Russian].


  • There are currently no refbacks.