Rybohospodars'ka nauka Ukrayiny (Fisheries Science of Ukraine)

21-33

Authors: Ligaszewski M., Weglarzy K., Fiema J., Łysak A.

The goal of the experiment was to find essential correlation between glucosamine content in zoo- plankton, component of natural nourishment of carp as well as glucosamine content in ingesta and fishing efficiency of ponds. Purpose of investigations was to use index values related to glucosamine content to evaluate carp production with in short-term perspectives. The correlation between selec- ted fraction of high fatty acids (HFA) in zooplankton and content of these fractions in carp meat were also examined. It was noticed that some parameters of glucosamine content in ingesta were statistically significant correlated (P<0,05) with ponds fishing efficiency, especially in reference to carp fry ponds. The correlation between percentage of PUFA-3, PUFA and PUFA-MUFA sum in high fatty acids profile in commercial carp meat and contest of these fraction in high fatty acids profile in zooplankton was also determined highly statistically significant or statistical significant (P<0,05). Taking into account qualitative composition of high fatty acids profile and PUFA-6/3 ratio it can be noticed that biennial production cycle of light commercial carp provides higher dietary value meat than meat obtained in triennial production cycle.

33-38

Authors: Spesivy T., Kuzmenko Y., Buzevich I., Maksimenko M., Tishenko S.

By the method of variational statistics comparative length distribution of catches fishes from experimental and commercial gill nets was analyzed. In the result of analysis the lack of statisti- cal meaningful difference was determined. Conclusion about necessity absence in correction of standard methods has been made.

42-44

Authors: Kovalchuk O.

The aim of our findings was to study species and quantitative composition of macrophytes in “ Velykyi Lyubin” fish ponds area. The degree of ponds over growning with vegetation was also stadied with a purpose to analyze the character different kinds of utilization by grass carp.

50-53

Authors: Solod R.

The analysis of the statistical information based on the fish catching of commercial fishes in the sea of Azov for 2004–2008 and the results of researches of AzYugNIRO afford ground for considering the haarder fishery by purse and ring nets a major factor of man’s impact on the structure of commercial part of the haarder population. For the purpose of more rational use of this commercial object the fol- lowings measures are offered on optimization of measures of adjusting of its fishery: the reduction of terms of the haarder fishery by purse and ring nets in the sea of Azov, expansion to the east of fishery district by purse and ring nets, increase of low-limit of mesh in the gears for the haarder fishery.

61-67

Authors: Mamedov T., Kuliev Z., Smirnov A., Tkachenko V.

As a result of collective azerbaidzan–iran construction of hydrostation “Araz” there have been take place ecological conditions alter of the Nakhichivan reservoir, its insor plant growthing. That factor have furthered on areal expansion and quantaty growth of the silver crucian carp in this reservoir. On the materials of years 1996–2006 have been represented the data on distribution and population number of this subspecies. There have been analyzed its biological features such as growth and fatting, fecundity etc.

78-84

Authors: Gryb I., Shandruk O.

The modern consisting of ecological indexes use of the surface-water state is considered of fish-farming practice. Failings are rotined in the receipt of operative state information water en- vironment. The use of spatial biomarkers which include quality of water environment is offered, a landing closeness finfishess, expenses of forages, mass of commodity fish and fish produktivity. A spatial biomarker is given by estimation possibility of conduct direction of commodity fish-far- ming, determinations of fish productivity and profitability of economy.

88-90

Authors: Vladimirsky I.

The methods of hormonally-genetic regulation are used intensively specially with economic important fish species such as salmonidae, acipenseridae, cichlidae etc. By the method of hormo- nally regulation, fish sex is changed to inverse which more important for fish industry.

95-98

Authors: Filipov V., Buchatsky L., Nogarev O.

The facility of pike (Esox lucius) and roach (Rutilus rutilus) sperm cryopreservation by previous developed method was shown. The condition of fish species cryopreservation such as medium, cryopreservatives and freezing — thawing rates were determined. If initial activity of native sperm was 65% and 50% for pike and roach respectively the maximum remain of thawing sperm reached up to 35% and 20% respectively.

102-105

Authors: Koziy M., Sherman I.

The given microscopic studies of the marginal zone hepar of the miscellaneous type fish. It is shown, beside fish histological construction organ has aspectual specificity. Lifted question of the further study histological constructions liver cultivated type of fish.

109-112

Authors: Bazaeva A., Vovk N.

There are presented a review of studies on determination of effect of phosphor-mobilizing bacterial preparations on ecosystems of fishing ponds and fish organisms.