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The modulation of serum lysozyme activity in Siberian sturgeon after anti-furunculosis passive immunization

100%

Kolman H. , Siwicki A. K.

nr 3

Wystepowanie metacerkarii Diplostomum sp. u narybku jesiotra syberyjskiego [Acipenser baeri Brandt]. Badania wstepne

80%

Dzika E. , Bielecki A. , Kolman H. , Kolman R.

nr 3

347-353

Siberian sturgeon fry coming from three different ponds has been examined. 1. „Dgał" - fish culture conerete-terrestrial pond beloning to D.O.Z. Dgał Inland Fisheries Institute in Olsztyn supplied with fresh water from Great Dgał Lake; 2. ,,Grzmięca" - fish culture pond terrestrial, natural belonging to fishing farm Grzmięca near Brodnica; 3. ,,Konin" - fish culture pond near Konin supplied with water utilized by near beat and power generating plant. Total of 80 sturgeons fry with parameters: length 17.5 cm - 38.5 cm, weight 21 g- 134 g, age O⁺ ,1⁺ has been examined. The examinated group of sturgenos had metacercariae Diplostomum sp. in their lenses. Prevalence of infection of sturgeon with metacercariae Diplostomum sp. was high in all this three ponds. Intensity of infection was also high in ponds „Dgał" and „Grzmięca", but low in ,,Konin". In ponds ,,Dgał" and ,,Konin" we have obtained high positive correlation (,,Dgał" - r = 0,606, p ≤ 0,05; ,,Konin" - r = 0,743, p ≤ 0,01) between number of metacercariae in sturgeon and temperature of water. Our study confirmed observations other authors susceptibility sturgeon fry on the Diplostomum sp. invasion.

Activity of digestive enzymes in Siberian sturgeon juveniles [Acipenser baeri Brandt] - a preliminary study

80%

Zoltowska K. , Kolman R. , Lopienska E. , Kolman H.

nr 1

201-211

The effect of natural immunomodulators applied in immersion on non-specific immune responses in Russian sturgeon [Acipenser gueldenstaedti Brandt]

80%

Kolman H. , Siwicki A. K. , Kolman R.

nr 2

391-410

The effect of infestation with Diplostomum sp. on growth rate of Siberian sturgeon fry Acipenser baeri Brandt

80%

Kolman R. , Kolman H. , Dzika E. , Bielecki A.

nr 1

The objective of the experiment was to compare the growth rate in two groups of Siberian sturgeon fry, one of which was infested with metacercariae of Diplostomum, the infestation degree was from 1 to 160/fish. The fish fed on natural as well as artificial food; the latter was given at the rate sufficient to cover 50% of the fish requirements. The average initial body weight in the control group was 16.8 ± 1.9g, and in the group with Diplostomum - 28.4 ± 3.6 g. During the period of favorable temperatures, viz. for about 90 days, the fry was showed satisfactory growth, but the growth rate becaine inhibited as the temperatures decreased to below 12°C, so that throughout the wintering period the fish weight decreased by some 10%. Fish from the control group showed a higher growth rate than the infested ones, and by the end of the experiment the controls weighted 7.5% more than the infested group in spite of their lower initial weight.

Occurrence of Diplostomum sp.in the Siberian sturgeon Acipenser baeri Brandt - preliminary study

80%

Dzika E. , Kolman H. , Kolman R.

nr 3

Non-specific defence mechanisms of Russian sturgeon [Acipenser gueldenstaedti Brandt] reared in cages

80%

Kolman H. , Kolman R. , Siwicki A. K.

nr 2

The ingestion of Aeromonas salmonicida subsp. salmonicida by fish blood phagocytes in vitro under influence of herbicides

70%

Kolman H. , Terech-Majewska E. , Kolman R. , Szarek J. , Swiatecki A.

nr 1