Akademik Veri Yönetim Sistemi
Turkish Journal of Zoology, cilt.25, sa.2, ss.163-168, 2001 (Scopus, TRDizin)
In this study, the age, growth and reproduction properties of 627 barbels. Barbus plebejus escherichi (Steindachner. 1897). From Oltu Stream in the Coruh River Basin were investigated during a period from August 1994 to July 1996. The age of this species ranged between age groups 1 and 10, the second age group being dominant. Individuals were composed of 64.59% males and 35.41% females, von Bertalanffy growth parameters and length-weight relationships were Lt=29.35×(1-e-0.139(t+1.640). W=0.0189.FL2.843 (r=0.96) in males and Lt=32.77×(1-e-0.116(t+1.891)). Wt=392.10× (1-e-0.116(t+1.891))2.911. W=0.0152.FL2.911 (r=0.97) in females. Conditions coefficients of males were and females were calculated to be 1.221 and 1.220 respectively. Sexual maturity was 11.45-13.75 cm fork length (2-3 years old) in males and 13.65-15.95 cm (3-4 years old) in females. Fecundity was calculated to be 1256 (3rd age group)-8445 (7th age group) eggs/female. The spawning period was between May and July when the water temperature was between 14 and 19°C in both years.