Vol. 18 No. 1 (2023)

Age estimation and body size of the Parsley Frog, Pelodytes caucasicus Boulenger, 1896 from Lake Borçka Karagöl, Turkey

Cantekin Dursun
Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdogan University, Rize
Serkan Gül
Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdogan University, Rize
Nurhayat Özdemir
Department of Biology, Faculty of Arts and Sciences, Recep Tayyip Erdogan University, Rize

Published 2023-02-16


  • weight,
  • Von Bertalanffy,
  • growth rate,
  • Amphibia,
  • age at maturity

How to Cite

Dursun, C., Gül, S., & Özdemir, N. (2023). Age estimation and body size of the Parsley Frog, Pelodytes caucasicus Boulenger, 1896 from Lake Borçka Karagöl, Turkey. Acta Herpetologica, 18(1), 11–22. https://doi.org/10.36253/a_h-11995


In this study, we described age structure, body size, body mass and the relationships among these parameters for a population of P. caucasicus from Lake Borçka Karagöl, Artvin, Turkey. The mean SVL with standard error was 45.87 mm ± 0.55 (range: 39.98-50.28 mm) and the mean weight with standard error 8.81 g ± 0.39 (range: 6.10-11.47 g) in females whereas 48.16 mm ± 0.45 (range: 43.64-54.78 mm) and 11.32 ± 0.25 (range: 9.56-14.80 g) in males, respectively. We found a significant male-biased difference reflecting sexual dimorphism and statistically significant positive relationships between these variables. According to the results, the age ranged between 2-5 years in females and 2-6 years in males. The mean age distributions significantly differed between the sexes (females: 3.28 years ± 0.19; males: 3.94 years ± 0.20). The mean ages and maximal ages were found identical to the previously reported results from Turkey, but the mean ages were higher than in Georgian populations. Von Bertalanffy growth models demonstrated similar curves, and the growth rate was faster up to 3 years in both sexes. To conclude, this study was the first to determine age structure and growth patterns in Borçka Karagöl population and weight data for P. caucasicus was presented for the first time in the literature.


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