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

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

Abstract


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».

Keywords


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

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References


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