Abdusamadov, A.S. (1986) Biology of white amur, Ctenopharyngodon idella , silver carp, Hypophthalmichthys molitrix , and bighead, Aristichthys nobilis, acclimatized in the Terek region of the Caspian Basin. Journal of Ichthyology, pp. 41-49
Species | Development state | Trait | Primary Data | Secondary Data |
Aristichthys nobilis | Egg | Egg Buoyancy | Drifting egg [The largest number of eggs are found in the upper water layer in the main river chanel] | Pelagic |
Aristichthys nobilis | Egg | Incubation time | 34-36 hour [23-25°C], 50-70 h [18-20°C] | 35.0 days |
Aristichthys nobilis | Egg | Temperature for incubation | 23-25 [But also at lower Temperature: 18-20] | 24.0 °C |
Aristichthys nobilis | Egg | Degree-days for incubation | 35-50 | 42.5 °C * day |
Aristichthys nobilis | Female | Age at sexual maturity | Most (81%) at 6-7 [Some at 5] | 6.5 year |
Aristichthys nobilis | Female | Length at sexual maturity | Most (81%) 75-100 [16% at 76] | 87.5 cm |
Aristichthys nobilis | Female | Weight at sexual maturity | 9.3 [16% at 7.9 kg] | 9.3 kg |
Aristichthys nobilis | Female | Absolute fecundity | 313.6 to 1860.800 | 313.6 thousand eggs |
Aristichthys nobilis | Male | Age at sexual maturity | 5-7 make up most of the run, about 90 % [Smallest male of 5] | 6.0 years |
Aristichthys nobilis | Male | Length at sexual maturity | 81-90 for 90% of males [75 for smallest male] | 85.5 cm |
Aristichthys nobilis | Male | Weight at sexual maturity | 7.1 [For smallest male] | 7.1 kg |
Aristichthys nobilis | Spawning conditions | Spawning migration distance | About 125-260 km | 192.5 km |
Aristichthys nobilis | Spawning conditions | Spawning migration period | Spawing migrations starts in the second week of May at 18-19°C | ['May'] |
Aristichthys nobilis | Spawning conditions | Spawning season | Spawning period continues from April to July [Mass spawning takes place at the end of May and in the beginning of June] | ['April', 'May', 'June', 'July'] |
Aristichthys nobilis | Spawning conditions | Spawning period duration | Spawning period continues from April to July [Mass spawning takes place at the end of May and in the beginning of June] | No data |
Aristichthys nobilis | Spawning conditions | Spawning temperature | 18-20 | 19.0 °C |
Aristichthys nobilis | Spawning conditions | Spawning water type | Spawning takes place after a sharp rise in the water level and current velocity | Flowing or turbulent water |
Ctenopharyngodon idella | Egg | Egg Buoyancy | Drifting egg [The largest number of eggs are found in the upper water layer in the main river chanel] | Pelagic |
Ctenopharyngodon idella | Egg | Incubation time | 34-36 hour [23-25°C], 50-70 h [18-20°C] | 35.0 days |
Ctenopharyngodon idella | Egg | Temperature for incubation | 23-25 [But also at lower T: 18-20] | 24.0 °C |
Ctenopharyngodon idella | Egg | Degree-days for incubation | 35-50 | 42.5 °C * day |
Ctenopharyngodon idella | Female | Age at sexual maturity | 5.0 | 5.0 year |
Ctenopharyngodon idella | Female | Length at sexual maturity | 65 | 65.0 cm |
Ctenopharyngodon idella | Female | Weight at sexual maturity | 5.8 | 5.8 kg |
Ctenopharyngodon idella | Female | Absolute fecundity | Mean of 765 [Range 210.500-1230.700] | 720.6 thousand eggs |
Ctenopharyngodon idella | Male | Age at sexual maturity | 4.0 | 4.0 years |
Ctenopharyngodon idella | Male | Length at sexual maturity | 63 | 63.0 cm |
Ctenopharyngodon idella | Male | Weight at sexual maturity | 5.0 | 5.0 kg |
Ctenopharyngodon idella | Spawning conditions | Spawning migration distance | About 125-260 km | 192.5 km |
Ctenopharyngodon idella | Spawning conditions | Spawning migration period | Spawning migration begins in mid-April at 15-17°C, the most intensive spawning migration is observed during 1-20 May | ['April', 'May'] |
Ctenopharyngodon idella | Spawning conditions | Spawning season | Spawning period continues from April to July [Mass spawning takes place at the end of May and in the beginning of June] | ['April', 'May', 'June', 'July'] |
Ctenopharyngodon idella | Spawning conditions | Spawning period duration | 6-8 [Spawning period continues from April to July [Mass spawning takes place at the end of May and in the beginning of June]] | 7.0 weeks |
Ctenopharyngodon idella | Spawning conditions | Spawning temperature | 18-20 | 19.0 °C |
Ctenopharyngodon idella | Spawning conditions | Spawning water type | Spawning takes place after a sharp rise in the water level and current velocity | Flowing or turbulent water |
Hypophthalmichthys molitrix | Egg | Egg Buoyancy | Drifting egg [The largest number of eggs are found in the upper water layer in the main river chanel] | Pelagic |
Hypophthalmichthys molitrix | Egg | Incubation time | 34-36 hour [23-25°C], 50-70 hour [18-20°C] | 35.0 days |
Hypophthalmichthys molitrix | Egg | Temperature for incubation | 23-25 [But also at lower T: 18-20] | 24.0 °C |
Hypophthalmichthys molitrix | Egg | Degree-days for incubation | 35-50 | 42.5 °C * day |
Hypophthalmichthys molitrix | Female | Age at sexual maturity | 5, but most 7-8, females | 7.5 year |
Hypophthalmichthys molitrix | Female | Length at sexual maturity | 66 | 66.0 cm |
Hypophthalmichthys molitrix | Female | Weight at sexual maturity | 4.8 | 4.8 kg |
Hypophthalmichthys molitrix | Female | Absolute fecundity | From 315.100 to 1340.5 [Average 812.2] | 315.1 thousand eggs |
Hypophthalmichthys molitrix | Male | Age at sexual maturity | 4, most 5-7 | 6.0 years |
Hypophthalmichthys molitrix | Male | Length at sexual maturity | 61 | 61.0 cm |
Hypophthalmichthys molitrix | Male | Weight at sexual maturity | 4.8 | 4.8 kg |
Hypophthalmichthys molitrix | Spawning conditions | Spawning migration distance | About 125-260 km | 192.5 km |
Hypophthalmichthys molitrix | Spawning conditions | Spawning migration period | The beginning of the spawning migration occurred at the end of April, at 16-17°C, the peak was observed in the middle and at the end of May and in the beginning of June | ['April', 'May', 'June'] |
Hypophthalmichthys molitrix | Spawning conditions | Spawning season | Spawning period continues from April to July [Mass spawning takes place at the end of May and in the beginning of June] | ['April', 'May', 'June', 'July'] |
Hypophthalmichthys molitrix | Spawning conditions | Spawning temperature | 18-20 | 19.0 °C |
Hypophthalmichthys molitrix | Spawning conditions | Spawning water type | Spawning takes place after a sharp rise in the water level and current velocity | Flowing or turbulent water |