Abdusamadov, 1986



Citation


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

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Aristichthys nobilis Spawning conditions Spawning temperature 18-20 19.0 °C
Ctenopharyngodon idella Spawning conditions Spawning temperature 18-20 19.0 °C
Hypophthalmichthys molitrix Spawning conditions Spawning temperature 18-20 19.0 °C
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
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
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 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 Spawning conditions Spawning water type Spawning takes place after a sharp rise in the water level and current velocity Flowing or turbulent water
Aristichthys nobilis Egg Incubation time 34-36 hour [23-25°C], 50-70 h [18-20°C] 35.0 days
Ctenopharyngodon idella Egg Incubation time 34-36 hour [23-25°C], 50-70 h [18-20°C] 35.0 days
Hypophthalmichthys molitrix Egg Incubation time 34-36 hour [23-25°C], 50-70 hour [18-20°C] 35.0 days
Aristichthys nobilis Female Age at sexual maturity 5-7 make up most of the run, about 90 % [Smallest male of 5] 6.0 years
Ctenopharyngodon idella Female Age at sexual maturity 4 4.0 years
Hypophthalmichthys molitrix Female Age at sexual maturity 4, most 5-7 6.0 years
Aristichthys nobilis Egg Degree-days for incubation 35-50 42.5 °C * day
Ctenopharyngodon idella Egg Degree-days for incubation 35-50 42.5 °C * day
Hypophthalmichthys molitrix Egg Degree-days for incubation 35-50 42.5 °C * day
Aristichthys nobilis Egg Temperature for incubation 23-25 [But also at lower Temperature: 18-20] 24.0 °C
Ctenopharyngodon idella Egg Temperature for incubation 23-25 [But also at lower T: 18-20] 24.0 °C
Hypophthalmichthys molitrix Egg Temperature for incubation 23-25 [But also at lower T: 18-20] 24.0 °C
Aristichthys nobilis Spawning conditions Spawning migration distance About 125-260 km 192.5 km
Ctenopharyngodon idella Spawning conditions Spawning migration distance About 125-260 km 192.5 km
Hypophthalmichthys molitrix Spawning conditions Spawning migration distance About 125-260 km 192.5 km
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
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
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
Aristichthys nobilis Spawning conditions Spawning migration period Spawing migrations starts in the second week of May at 18-19°C ['May']
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']
Hypophthalmichthys molitrix Spawning conditions Spawning migration period The beginning of the spawning migration occured 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']
Aristichthys nobilis Female Absolute fecundity 313.6 to 1860.800 313.6 thousand eggs
Ctenopharyngodon idella Female Absolute fecundity Mean of 765 [Range 210.500-1230.700] 720.6 thousand eggs
Hypophthalmichthys molitrix Female Absolute fecundity From 315.100 to 1340.5 [Average 812.2] 315.1 thousand eggs
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', 'July', 'June']
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', 'July', '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', 'July', 'June']
Aristichthys nobilis Female Weight at sexual maturity 9.3 [16% at 7.9 kg] 9.3 kg
Ctenopharyngodon idella Female Weight at sexual maturity 5.8 5.8 kg
Hypophthalmichthys molitrix Female Weight at sexual maturity 4.8 4.8 kg
Aristichthys nobilis Female Length at sexual maturity Most (81%) 75-100 [16% at 76] 87.5 cm
Ctenopharyngodon idella Female Length at sexual maturity 65 65.0 cm
Hypophthalmichthys molitrix Female Length at sexual maturity 66 66.0 cm
Aristichthys nobilis Male Length at sexual maturity 81-90 for 90% of males [75 for smallest male] 85.5 cm
Ctenopharyngodon idella Male Length at sexual maturity 63 63.0 cm
Hypophthalmichthys molitrix Male Length at sexual maturity 61 61.0 cm
Aristichthys nobilis Male Weight at sexual maturity 7.1 [For smallest male] 7.1 kg
Ctenopharyngodon idella Male Weight at sexual maturity 5 5.0 kg
Hypophthalmichthys molitrix Male Weight at sexual maturity 4.8 4.8 kg
Aristichthys nobilis Female Age at sexual maturity Most (81%) at 6-7 [Some at 5] 6.5 year
Ctenopharyngodon idella Female Age at sexual maturity 5 5.0 year
Hypophthalmichthys molitrix Female Age at sexual maturity 5, but most 7-8, females 7.5 year