No detailed citation.
Species | Development state | Trait | Primary Data | Secondary Data |
Vimba vimba | Female | Age at sexual maturity | Vimba mature in the 2nd and 3rd year of life. The caspian vimba matures at the age of 3. Fish of age 2-5 participate in spawning, and 4-year-old fish are predominant in the spawning population. | 3.5 year |
Vimba vimba | Female | Length at sexual maturity | The major part of the spawning population consists of 16-23 cm females. In all studied year, mature females ranges from 13.5-17.8 [Age 3]; 16.8-18.9 [Age 4], 19.4-20.9 [Age 5] | 19.5 cm |
Vimba vimba | Female | Weight at sexual maturity | In all studied year, mature females ranges from 48-114 g [Age 3]; 89-140 [Age 4], 133-177 [Age 5] | 81.0 kg |
Vimba vimba | Female | Female sexual dimorphism | As a rule, the females are slightly larger than males of the same age | Absent |
Vimba vimba | Female | Absolute fecundity | In 1960, the fecundity of vimba in Kyzylagach bay was 8900-39600 eggs, average 27400 eggs. According to the data collected in 1963, the absolute fecundity of vimba of 13.5-20.5 cm varied from 8300 to 29200 eggs. The absolute fecundity of vimba from the Arakum waterbodies (central Caspian) was in the range of 7000-89200 eggs. The mean fecundity was: 25000 eggs in 1965, 23500 eggs in 1966, and 35200 eggs in 1967. Vimba in the Terek basin varied from 11900 to 65300 eggs. | 24250.0 thousand eggs |
Vimba vimba | Male | Age at sexual maturity | Vimba mature in the 2nd and 3rd year of life. The caspian vimba matures at the age of 3. Fish of age 2-5 participate in spawning, and 4-year-old fish are predominant in the spawning population. | 3.5 years |
Vimba vimba | Male | Length at sexual maturity | The major part of the spawning population consists of 13-19 cm males. In all studied year, mature males ranges from 13.1-16.6 [Age 3]; 15.6-18.6 [Age 4], 17.3-20.1 [Age 5] | 16.0 cm |
Vimba vimba | Male | Weight at sexual maturity | In all studied year, mature males ranges from 39-87 g [Age 3]; 60-124 [Age 4], 87-175 [Age 5] | 63.0 kg |
Vimba vimba | Spawning conditions | Spawning migration period | At the beginning of the spawning migration in Kyzylagach Bay (March). At the and of march and beginning of April, the spawning migration of kutum and vobla is nearly finished, mass entry of vimba into the Malyy Kyzylagach is observed. In Dagestan waters, the most vimba enter the Terek, Sulak, samur rivers, and the Arakum waterbodies for spawning from April onward at water temperatres of 10-13°C/ mass-scale migration was recorded in the second half of May in water temperatures of 19-20°C | ['March', 'April', 'May'] |
Vimba vimba | Spawning conditions | Spawning season | Spawns in Malyy Kyzylagach bay at the end of April and continues until the end of May | ['April', 'May'] |
Vimba vimba | Spawning conditions | Spawning period duration | Spawns in Malyy Kyzylagach bay at the end of April and continues until the end of May | No data |
Vimba vimba | Spawning conditions | Spawning temperature | 18-20°C | 19.0 °C |
Vimba vimba | Spawning conditions | Spawning release | Ovaries, close to the spawning, contain small (24-45%) and large (55-75%) eggs, which indicates spawning in batches | Multiple |
Vimba vimba | Spawning conditions | Parity | Soon after spawning, the spawners migrate toward river mouths, where they feed until the next spawning season | No category |
Vimba vimba | Spawning conditions | Parental care | Soon after spawning, the spawners migrate toward river mouths, where they feed until the next spawning season | No category |