Rybohospodars'ka nauka Ukrayiny (Fisheries Science of Ukraine)

10-15

Authors: Tsion N.

Influence of wheat grains slop on the development of aquatic organisms important as fish fodder in fingerling fish pond is investigated. It is proved that single discharge into the fingerling fish pond of 2 ton/ha of wheat grains slop in spring is more effective than using manure for zoo- plankton structure formation.

19-23

Authors: Didenko A.

There has been analyzed current state of silver bream of the Kremenchuk reservoir. With the aid of cohort analysis, there were estimated fishing mortality, possible number, and biomass of commercial stock of this species for 2005–2006. There were modelled yields per recruits of silver bream using a Thompson and Bell type model.

30-34

Authors: Spesivy T., Kuzmenko Y.

The possibility of usage the scale index, which was proposed for gold fish (Carrasius auratus gibelio Bloch), for roach slow-growing form identification was estimated. The scales Length-weight proportion are variable depending on place on body, so only scales placed above lateral line (N 12–23 counting from head) should be used.

39-46

Authors: Bilko V., Kruzhilina S.

It was shown that rise in acidity of freshwater ecosystems and soils was caused by binding mineral components (mainly calcium and magnesium) by carbon dioxide and organic acids and their carryover to seas and oceans. Particularly actively this process goes in the zone with humid and cold climate because aggressiveness of carbon dioxide increases with temperature decrease. Speed of calcium pumping currently significantly increased due to increased content of sulphur in the biosphere. Thus, natural geological process of fresh waters acidification is intensified by acidic pollution of anthropogenic origin.

52-56

Authors: Оleinik A.

The research is dedicated to hydro-biologic and hydro-chemical state of wintering, spawning and feeding ponds including the influence of some indicators on physiological state of breeding fish during spawning

63-68

Authors: Martseniuk N.

It has been done economic evaluation of efficiency of commodity fish rearing using different cycles in farms of Lvov’s region.

73-75

Authors: Kudryashov S., Kudryashova M.

The preliminary estimate of several preparations for artificial stimulation of maturation of the fish sexual product is sown. The insignificant advantage of traditional hypophysial injecting in females of silver and bighead carps in comparing with existing releasing–hormones.

81-85

Authors: Cherepnin V., Osipenko N., Borbat N.

There are presented results of studies on evaluation of development of crossed Ukrainian-Ro- manian carps on early stages of ontogenesis after thermoshock effect. It was observed an increase of resistance of thermoshocked embryos against unfavorable environmental factors. It was shown а possibility for forecasting heterosis effect in more heatresistant embryos.

91-94

Authors: Neveselaya O.

The article are consist the results of introduction of enzymic preparation of “Magrozim” in the ration of larvae of catfish from the first days of transition to the exogenous feed. It is set that the explored preparation gives most fish-breeder and biological effect at the dose of introduction 1 kg of preparation on 1 tone of the mixed fodder.

98-101

Authors: Tsytsyalo O.

There are results of cytogenetic monitoring of carp stock in farm “Rudniki” of Lviv region. Our investigations include micro — nuclear test, mitotic activity of cells and cytogenetic status at all.

108-110

Authors: Borbat M., Bezusy O.

The possibility of increase of market trout growing volumes of in Ukraine to 2,0 thousand tons per a year by the reconstruction of the water systems of pool fish farms is presented.