Prawochenski, R. (1964) Chondrostoma nasus (Linnaeus, 1758)., pp. 54
Species | Development state | Trait | Primary Data | Secondary Data |
Chondrostoma nasus | Egg | Oocyte diameter | Diameter of freshly laid eggs was 1.6 mm | 1.6 mm |
Chondrostoma nasus | Egg | Egg size after water-hardening | Eggs after swelling are 2.2. mm | 2.0 mm |
Chondrostoma nasus | Egg | Incubation time | Nase eggs hatched after 7 days at 17-18°C | 17.5 days |
Chondrostoma nasus | Larvae | Initial larval size | Newly hatched larvae are 7.0-9.5 mm in length | 8.25 mm |
Chondrostoma nasus | Female | Age at sexual maturity | Nase mature at third year of life. Their first spawning is at that age | 3.0 year |
Chondrostoma nasus | Female | Relative fecundity | Realtive fecundity vary from 30 000 eggs/kg for female Age 4, 35057 for female age 5, 33136 for females age 6, 43534 for females age 7, 46080 for females age 10, 36920 for females age 12 | 30.0 thousand eggs/kg |
Chondrostoma nasus | Female | Absolute fecundity | Absolute fecundity vary from 10800 eggs/kg for female Age 4, 16215 for female age 5, 18076 for females age 6, 28297 for females age 7, 41472 for females age 10, 36920 for females age 12 | 10800.0 thousand eggs |
Chondrostoma nasus | Male | Male sexual dimorphism | During spawning migrations and during spawning itself nase males have breeding tubercles on gill covers, scales and fins, especially on pectoral fins | Absent |
Chondrostoma nasus | Spawning conditions | Spawning migration distance | Spawning migrations are of short distance. Recaptured four tagged nase spawners. Two of them did not migrate at all, one migrated 8 km (it covered 2 km/day on average), the fourth spawned 14 km (0.7 km/day) | 8.0 km |
Chondrostoma nasus | Spawning conditions | Spawning season | 12-27 April [Moselle, France], 15 April-5 May [Kuban], 22 April [Don], 10-20 April [Moskva], 10-20 April [Vistula], April [Dunajec], 16 April [Vistula], 19 April [Vistula], 20 April [Vistula], according to various authors | ['April', 'May'] |
Chondrostoma nasus | Spawning conditions | Spawning temperature | 6-8 [In Moselle, France], 8 [Dunajec], 12 [Vistula], 15 [Vistula], according to various authors | 7.0 °C |
Chondrostoma nasus | Spawning conditions | Spawning depth | Eggs are deposited on shallow depth (< 1m) | 1.0 m |
Chondrostoma nasus | Spawning conditions | Spawning substrate | Stones or gravel exposed to water current | Lithophils |
Chondrostoma nasus | Spawning conditions | Spawning release | Spawning act is short. Repeated spawnings on the spawning ground were not observed | No category |