Age-dependent variations in the venom proteins of Vipera kaznakovi Nikolsky, 1909 and Vipera ammodytes (Linnaeus, 1758) (Ophidia: Viperidae)

Polyacrylamide disc gel electrophoresis and densitometry analysis were used to analyze venom extracts of Vipera kaznakovi (16.5, 30, and 55 cm) and Vipera ammodytes (28.5, 36.7, and 51.5 cm) specimens of 3 different lengths. V. kaznakovi specimens were collected from Hopa (Artvin Province); 2 V. ammodytes specimens were from Agva (Istanbul Province) and the longest one was from Yuvacik (Kocaeli Province). The electropherograms of the venom protein samples showed age-dependent qualitative and quantitative variations.