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
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 |