Comparative Study of Electrophoretic Characteristics of Serum Albumin of round Goby Neogobius Melanostomus from Black Sea and Azov Sea

Concentration and electrophoretic properties of blood serum albumin of the round goby Neogobius melanostomus caught in Black Sea and Azov Sea were studied in relation to age, sex, maturation stage and season. Electrophoretic mobility of serum albumin in Black Sea fish increased with age, while in Azov Sea goby it varied less. No differences were observed in albumin characteristics between female and male. Albumin mobility increased during maturation process in male and female from both seas. No significant seasonal changes were shown in albumin mobility in Azov Sea goby while in Black Sea fish it was higher in spring than in summer. Our findings indicate that fish physiological status, age, season and geographical locations play an important role in albumin properties. The alterations of albumin electrophoretic mobility could be explained its transport function and the genetic and ecological differences between the fish from Black Sea and Azov Sea.