Age Structure and Growth in Caucasian Parsley Frog Pelodytes caucasicus (Boulenger, 1896) from Turkey

Ugur Cengiz Erişmiş, Huseyin Arıkan, Muhsin Konuk, Fabio Maria Guarino


Age structure and growth of the Caucasian parsley frog, Pelodytes caucasicus from Turkey was assessed using phalangeal skeletochronology. Snout-vent length (SVL) ranged from 41.48 to 52.58 mm (mean ± SD: 47.16 ± 2.87, n = 44) in males and 40.28 to 50.62 mm (mean ± SD: 45.79 ± 2.29, n = 31) in females. Ages of adults ranged from 2 to 5 years in males (mean ± SD: 3.61 ± 0.9) and from 2 to 4 years (mean ± SD: 3.03 ± 0.7) in females. For both sexes, SVL was significantly correlated with age and maturity was attained at 2 years of age. Von Bertalanffy growth curves of age vs. SVL showed a similar profile between males (asymptotic size, SVLmax: 53.42 mm; growth coefficient k = 0.42) and female (SVLmax: 52.04 mm; k = 0.38). Adult annual survivorship and adult life expectancy were 0.78 and 5.04 years, respectively, in males; 0.76 and 4.66 years, respectively, in females. Comparison with Georgian populations of P. caucasicus suggests that sexual dimorphism in size and longevity is a species characteristic.


age structure; growth curve; skeletochronology; Pelodytes caucasicus

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