Naddafi et al, 2005


Naddafi, R. and Abdoli, A. and Hassanzadeh Kiabi, B. and Mojazi Amiri, B. and Karami, M. (2005) Age, growth and reproduction of the Caspian roach (Rutilus rutilus caspicus) in the Anzali and Gomishan wetlands, North Iran. J. Appl. Ichthyol., pp. 492-497

Associated characteristics

Species Development state Trait Primary Data Secondary Data
Rutilus rutilus Egg Oocyte diameter The egg diameter, from ovary, varied from 0.9 to 1.45 mm in Gomishan roach compared to 0.95-1.3 mm in Anzali roach 1.12 mm
Rutilus rutilus Female Length at sexual maturity Length of female sampled: 184.65 ± 26.39, range 104-311 (most 176-180) in Gomishan wetland and 203.69 ± 23.61, range 153-271 (most 191-200) mm in Anzali 184.65 cm
Rutilus rutilus Female Weight at sexual maturity Weight of male sampled: 73.95 ± 51.65, range 11.15-467.20 g in Gomishan wetland and 96.41 ± 39.14, range 37.37-238.34 g in Anzali 73.95 kg
Rutilus rutilus Female Absolute fecundity The absolute fecundity for Caspain Sea roach has been recorded at the amazing range of 940-140000. In the present study, the ranges were 4262-98804 and 6035-32141 for Gomishan and anzali roach, respectively 70470.0 thousand eggs
Rutilus rutilus Female Maximum GSI value Mean 18%, up to 30% [In April, in Gomishan] and Mean of 15% up to 23% [In April for Anzali] 18.0 percent
Rutilus rutilus Male Length at sexual maturity Length of male sampled: 167.72 ± 33.58, range 91-237 (most 161-170) in Gomishan wetland and 202.65 ± 21.45, range 137-275 (most 201-210) mm in Anzali 167.72 cm
Rutilus rutilus Male Weight at sexual maturity Weight of male sampled: 53.11 ± 29.36, range 6.38-148.08 g in Gomishan wetland and 93.88 ± 31.56, range 24.21-245 g in Anzali 53.11 kg
Rutilus rutilus Male Maximum GSI value Mean of 4.5, up to 7.5 and even 9% [In March, in Gomishan] and mean of 4, up to 7.5% [In March for Anzali] 4.5 percent