Wajdowicz, 1974



Citation


Wajdowicz, Z. (1974) Characteristic of the spawning population of the Vimba vimba nation carinata from the River Czarna Orawa. Acta Hydrobiol., pp. 221-228

Associated characteristics


Species Development state Trait Primary Data Secondary Data
Vimba vimba Spawning conditions Spawning substrate Generatively lithophilous. Use for spawning the stony-gravelled bottom parts of the River Czarna orawa above the reservoir Lithophils
Vimba vimba Spawning conditions Spawning temperature Water temperature of 17-18°C for the first spawning 17.5 °C
Vimba vimba Spawning conditions Spawning water type Spawns in a swift current Flowing or turbulent water
Vimba vimba Female Maximum GSI value The average weight of the gonads calculated from 10 specimens of V. vimba obtained in 1972, of body weight 550-750 g g., constitued about 13 to over 24 per cent of the body weight of the fish, the mean being 17.3 per cent 17.3 percent
Vimba vimba Male Male sexual dimorphism Take on mating colours, the dorsal part and sides becoming navy-blue and the fins and some ventral parts assuming and intensive colour. As a rule, after each migration, especially one connected with spawning, the runs swims back to the reservoir. Absent
Vimba vimba Egg Egg adhesiveness The fertilized spawn adheres to the stones or becomes covered by the gravel of the river bottom Adhesive
Vimba vimba Egg Incubation time 5 at about 18-20°C [Also described at 3.5-4 days at 13-15°C] 19.0 days
Vimba vimba Female Relative fecundity 34.5-74.5 thousands grains 54.5 thousand eggs/kg
Vimba vimba Egg Degree-days for incubation About 50-80 65.0 °C * day
Vimba vimba Egg Temperature for incubation About 16-18°C [When during the incubation time the water temperature fell below 11-12°C, the development of the embryos was distinctly inhibited and those born were not vital] 17.0 °C
Vimba vimba Spawning conditions Spawning migration distance Semimigrating anadomic. For reproduction they migrate up the rivers. Migrating along the River Vistula, Vimba vimba reached even the River Raba about 800 km. Distant from the coast. Vimba vimba also develops local forms living only in fresh flowing waters, expecially in places where rivers have been artifically dammed. In these cases the existence of V. vimba in the dam reservoir is conditioned by the possibility of undertaking short spawning migrations to the non-damned part of the river as isthe case in natural conditions 800.0 km
Vimba vimba Egg Egg size after water-hardening After fertilization the spawn of V. Vimba from the Czarna Orawa, similarly as that from the catchment area of the Baltic Sea, swells greatly in water, its volume increasing about twice No data
Vimba vimba Egg Egg Buoyancy The fertilized spawn adheres to the stones or becomes covered by the gravel of the river bottom Demersal
Vimba vimba Spawning conditions Spawning migration period The first migration, usually the most numerous, normally takes place in the middle of May, and the last one in the 1st, or less frequently in the 2nd decade of June ['May', 'June']
Vimba vimba Egg Oocyte diameter 3 fractions of spawn with average grain of 1.4, 0.9 and 0.6 mm 3.0 mm
Vimba vimba Female Absolute fecundity With an average body weight of 600 g., thus in the age groups VII-IX, was determined on almost 40 thousand grains of various sizes. Also describes in other studies: 27.5-115.5 thousand grains 71.5 thousand eggs
Vimba vimba Female Weight at sexual maturity The average of body weight of spawners caught in 1969 and 1970 was about over 0.460 kg [Both sex] 1969.0 kg
Vimba vimba Female Length at sexual maturity The average of body length of spawners caught in 1969 and 1970 was about 36 cm [Both sex] 1969.0 cm
Vimba vimba Larvae Larvae behaviour Hathing proceeds initially in hiding between stones. Then, after a few days, the hatched fish either swim actively down the river or are swept down by the current to the reservoir Demersal
Vimba vimba Female Age at sexual maturity Marked inhibition of the growth rate of the body length took place after the fifth year of life, thus after reaching sexual maturity, this being usually more pronounced in females No data
Vimba vimba Spawning conditions Spawning release As a portion-spawning fish, V. vimba usually makes, with favourable weather conditions, 2-3 spawning migrations from this reservoir No category