Unlu and Balci, 1993



Citation


Unlu, E. and Balci, K. . (1993) Observation on the reproduction of Leuciscus cephalus orientalis (Cyprinidae) in Savur Stream (Turkey). Cybium, pp. 241-250

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Leuciscus cephalus Spawning conditions Spawning temperature 15-23°C 19.0 °C
Leuciscus cephalus Female Maximum GSI value Up to 15-18% [June] 16.5 percent
Leuciscus cephalus Female Age at sexual maturity 2 2.0 years
Leuciscus cephalus Female Resting period July, August No data
Leuciscus cephalus Female Onset of oogenesis After August, GSI increase up to 3 during the winter than remain constant until March ['February', 'August', 'March', 'January']
Leuciscus cephalus Female Intensifying oogenesis activity March-April [From 4 to 10%] ['April', 'March']
Leuciscus cephalus Egg Oocyte diameter 0.83-1.5 1.165 mm
Leuciscus cephalus Female Absolute fecundity 2.5-20 11.25 thousand eggs
Leuciscus cephalus Spawning conditions Spawning season May to late June ['May', 'June']
Leuciscus cephalus Female Length at sexual maturity 14.6 14.6 cm
Leuciscus cephalus Male Length at sexual maturity 13 13.0 cm
Leuciscus cephalus Female Age at sexual maturity 3 3.0 year