Wyniki wyszukiwania - Biblioteka Nauki

1

Sytuacja epizootyczna chorob ryb lososiowatych w wojewodztwie warminsko-mazurskim w 1999 r.

100%

Bernad A.

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nr 11

587-590

2

The analysis of morphometric features of Psorospermium (DRIPs, Ichtiosporea) spores from narrow-cleaved crayfish

63%

Bernad A. , Wlasow T.

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tom 53

3

Skład chemiczny mięśni i wydajność mięsna raków z różnych środowisk naturalnych i hodowli

51%

Wlasow T. , Wozniak M. , Wisniewska A. , Bernad A.

Biuletyn Naukowy. Uniwersytet Warmińsko-Mazurski w Olsztynie

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2002

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nr 16

4

Wystepowanie oraz wrazliwosc na wybrane chemioterapeutyki szczepow Aeromonas hydrophila izolowanych od ryb na terenie wojewodztwa olsztynskiego

51%

Jakubczak A. , Anusz Z. , Bernad A.

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nr 01

18-20

EN

The studies were carried out on 67 fish coming from six breeding stations. It was found that the fish were a potential reservoir of A. hydrophila and therefore might be a source of infections and alimentary poisonings in humans. From the surface of fish there were isolated 17 strains of A. hydrophila (25.3%), from the homogenates of internal organs — 10 strains (14.9%) and from muscles — 2 strains (2.9%). All the examined strains were susceptible to streptomycin, neomycin, gentamycin, chloramphenicol and nalidixic acid. They were resistant to penicillin, ampicillin and tylosin. As to other antibiotics: 83% strains were susceptible to oxytetracycline, 25% to sulphonamides, 55% to trimethoprin plus sulphametozazol and 25% to nitrofurantoin.

5

Choroby zakaźne i pasożytnicze diagnozowane u ryb hodowlanych w województwie warmińsko-mazurskim w 2016 roku

45%

Bernad A. , Terech-Majewska E. , Pajak J. , Schulz P. , Siwicki A. K.

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2017

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nr 1

6

Metal concentrations in selected organs of crayfish – Orconectes limosus and Pacifastacus leniusculus from Mazurian Lakes

45%

Protasowicki M. , Wlasow T. , Rajkowska M. , Polna M. , Bernad A.

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tom 18

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nr 4

EN

Crayfish accumulate trace metals, which is why they often serve as environmental indicators. Among heavy metals, Hg, Cd and Pb are considered toxic substances, while Fe, Zn, Cu, Cr, Ni, Mn, V, Al and Li are involved in vital functions, which makes them essential elements in animal organisms. The study objective was to determine concentrations of the above metals in the abdominal muscles, hepatopancreas and exoskeleton of spinycheek crayfish (Orconectes limosus Raff.) and signal crayfish (Pacifastacus leniusculus Dana) from Dga³ Wielki Lake and Pob³êdzie Lake in the Mazurian Lake District, Poland. The analyses were carried out with the use of the following methods: CV AAS (Hg), GF AAS (Cd, Pb) and ICP-AES (Al, Cr, Cu, Fe, Li, Mn, Ni, V, Zn) after wet digestion in HNO3 and HClO4 concentrated acid mixture. Regarding mean concentrations (mg kg-1 wet weight) in crayfish, metals formed the following order: Al (14.8-123.4) > Mn (0.26-91.3) > Fe (0.54-81.1) > Zn (6.80-51.91) > Cu (1.21-4.34) > Ni (0-0.782) > Cr (0.032-0.606) > V (0-0.245) > Li (0.011-0.215) > Pb (0.018- 0.079) > Hg (0.004-0.045) > Cd (0.001-0.017).Metal concentrations in crayfish organs were varied, and for different metals they decreased in different order: Al, Mn, Cu, Ni, Cr, V and Li – exoskeleton > hepatopancreas > muscles; Zn and Hg – hepatopancreas > muscles > exoskeleton; Fe – hepatopancreas > exoskeleton > muscles, while for lead and cadmium no overall correlation was observed. The comparison of metal concentrations in the organs of spinycheek crayfish from Dga³ Wielki Lake and Pob³êdzie Lake did not prove any statistically significant discrepancies. Also, some minor interspecies differences in the metal content proved insignificant. According to the European Union regulations, concentrations of toxic heavy metals (Hg, Cd, Pb) in the muscles of both species of the tested crayfish were significantly below the maximum levels.

7

Występowanie inwazji Ichthyophthirius multifiliis u ryb hodowlanych w województwie warmińsko-mazurskim w latach 2014-2015

38%

Bernad A. , Terech-Majewska E. , Szypczynska K. , Pajdak J. , Schulz P. , Siwicki A. K.

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nr 3

8

Choroby zakaźne i pasożytnicze rozpoznawane u ryb hodowlanych w województwie warmińsko-mazurskim w 2017 roku

38%

Bernad A. , Jozefowska M. , Terech-Majewska E. , Pajdak-Czaus J. , Schulz P. , Siwicki A. K.

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2018

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nr 3