On the age, growth and reproduction of the barbel, Barbus plebejus escherichi (Steindachner, 1897) in the Oltu Stream of Çoruh River (Artvin-Turkey)
[ N/A ]
Tarih
2001
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
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.
Açıklama
Anahtar Kelimeler
Age, Barbel, Barbus plebejus escherichi, Growth, Reproduction
Kaynak
Turkish Journal of Zoology
WoS Q Değeri
Scopus Q Değeri
Q2
Cilt
25
Sayı
2
