Papageorgiou, 1979



Citation


Papageorgiou, N.K. (1979) The length weight relationship, age, growth and reproduction of the roach Rutilus rutilus (L.) in Lake Volvi. J. Fish. Biol., pp. 529-538

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Rutilus rutilus Spawning conditions Spawning temperature Spawning after the water has reached 10°C 10.0 °C
Rutilus rutilus Female Maximum GSI value Between 9.03 up to 16.67 increase with the age of female [7.35 for the smallest mature female] 9.03 percent
Rutilus rutilus Female Relative fecundity 90-172 131.0 thousand eggs/kg
Rutilus rutilus Male Maximum GSI value 9.7-11.07, quite constant during the life of male 10.385 percent
Rutilus rutilus Female Age at sexual maturity 1+ 1.0 years
Rutilus rutilus Spawning conditions Spawning migration period Early March, the roach started moving to the spawning ground which occur during the first half of April ['April', 'March']
Rutilus rutilus Female Absolute fecundity 0.92-32.810, with a mean of 9.2 16.865 thousand eggs
Rutilus rutilus Spawning conditions Spawning season First half of April ['April']
Rutilus rutilus Female Weight at sexual maturity 14.60 ± 0.61 g !! [Smallest mature female 11.7 g] 14.6 kg
Rutilus rutilus Female Length at sexual maturity 11-12 [Smallest mature female 10.6 cm long] 11.5 cm
Rutilus rutilus Male Length at sexual maturity Smallest mature male 7.4 cm long 7.4 cm
Rutilus rutilus Male Weight at sexual maturity Smallest mature male 3.78 g !! 3.78 kg
Rutilus rutilus Female Age at sexual maturity 2+ 2.0 year