Wyniki wyszukiwania - Biblioteka Nauki

1

Principles of hydromorphological surveys of Polish rivers

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Ilnicki P. , Gorecki K. , Grzybowski M. , Krzeminska A. , Lewandowski P. , Sojka M.

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nr 14

2

The signal crayfish Pacifastacus leniusculus – distribution and invasion in the Southern Baltic coastal river

84%

Dobrzycka-Krahel A. , Skora M. E. , Raczynski M. , Szaniawska A.

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nr 3

EN

The signal crayfish Pacifastacus leniusculus (Dana, 1852) of North American origin was introduced to Europe (to Scandinavia) in the 1960s. Since that time due to translocation to many countries, biological features and ecological plasticity, it became widespread, invasive and displaced native species. The paper reports first multi- point colonization of P. leniusculus in the Polish rivers. The aim of the study was to determine the current distribution of the signal crayfish in the coastal Baltic tributary (the River Wieprza) after 20 years of deliberate releases in its drainage area. During sampling at 28 sites with use of the “Pirate” crayfish traps and hand collection methods in spring and summer 2014, 127 P. leniusculus individuals were found at 8 sites in the Wieprza and its two tributaries, both away from and close to known sites of their introduction in 1995 and 1996 in the Wieprza River drainage area. The species spreads via the Wieprza River towards the Baltic brackish waters. With such expansion of this species, it is expected to be found in Polish coastal waters of the Baltic Sea and in other coastal rivers in the near future. The conflict between legal aspects of the signal crayfish farming, colonization by the species of the natural aquatic ecosystems and the expectations of consumers is discussed.

3

The occurrence of M74 syndrome in sea trout (Salmo trutta m. trutta L.) individuals returning to spawn in the Polish rivers of the Vistula catchment area

67%

Czeczuga B. , Bartel R. , Czeczuga-Semeniuk E. , Kosielinski P. , Grochowski A.

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2005

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tom 13

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nr 1

EN

The occurrence of M74 syndrome in female sea trout, Salmo trutta m. trutta, belonging to two populations returning to spawn in Polish rivers in the fall of 2003 and three from pond cultivation were investigated. Eggs from a total of 250 female specimens were investigated from rivers in northern Poland (10 – Parsęta, 100 – Miastko, 140 – Świbno). The study method applied involved comparing the concentrations in eggs of red (astaxanthin, canthaxanthin) and yellow (lutein, zeaxanthin) carotenoids. The specific carotenoids were determined with column chromatography (CC), thin layer chromatography (TLC), and high performance liquid chromatography (HPLC). The eggs of the investigated female sea trout were divided into three groups according to color: yellow, yellow-orange, and orange. Fifteen carotenoids were identified in the investigated sea trout females. Red carotenoids dominated in orange and yellow-orange eggs, while yellow ones dominated in yellow eggs. M74 syndrome was identified in 35 females, which represented 14.0% of all the investigated sea trout.

PL

Badano występowanie syndromu M74 u samic troci, Salmo trutta m. trutta, należących do dwóch populacji wchodzących na tarło do rzek polskich jesienią 2003 i trzeciej hodowanej w stawach. Przebadano razem ikrę 250 samic, w tym 10 z Parsęty, 100 z Miastka i 140 ze Świbna (rzeka Wisła, północna Polska). W badaniach tych porównywano koncentrację w ikrze czerwonych (astaksantyna, kantaksantyna) oraz żółtych karotenoidów (luteina, zeaksantyna). Poszczególne karotenoidy oznaczano stosując chromatografię kolumnową (CC), cienkowarstwową (TLC) oraz wysokosprawną chromatografię cieczową (HPLC). Pod względem zabarwienia ikra badanych samic troci należała do trzech grup: żółta, żółto-pomarańczowa i pomarańczowa. W ikrze badanych samic troci ustalono obecność 15 karotenoidów, wśród których w ikrze pomarańczowej i żółto-pomarańczowej dominowały karotenoidy czerwone, w ikrze żółtej - żółte (rys. 1, tab. 1 i 2). Ustalono występowanie syndromu M74 u 35 samic, co stanowi 14,0% wszystkich przebadanych samic troci.

4

Isozyme patterns of Callitriche cophocarpa, C. stagnalis and C. platycarpa from 13 Polish rivers

67%

Baczkiewicz A. , Szoszkiewicz K. , Cichocka J. , Celinski K. , Drapikowska M. , Buczkowska K.

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tom 44

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nr 2

103-114

5

Return of salmon back to Polish waters

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Bartel R.

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2001

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tom 01

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nr 3

EN

Deteriorating environmental conditions and overexploitation in situations of insufficient fish stocking or a complete lack of it led to the extinction of salmon in Polish waters. The last population of salmon in the Drawa River disappeared in the mid-1980s. The aim of this work was to re-establish salmon in Polish waters. The salmon for this purpose came from the Daugava River, when in 1985 and 1987, 50 000 and 30 000, eyed salmon eggs were bought, respectively. Up to 1996, salmon spawners were in the floating reared net cages in of the Puck Bay. Since 1994, spawns of salmon have been reared in freshwater at the fish farm "Aquamar" at Miastko. Stocking of smolt started in 1994 and by the year 2001, 2 238 653 one- and two-year-old smolts had been released. Smolts were released into rivers in the Pomeranian region, the Drawa, and the Vistula and its tributaries. Between 1994 and 2000, 77912 one- and two-year-old tagged smolts were released together with untagged ones. The first salmon in the Vistula and Drwęca rivers were noted in 1996. From 1997 to 2000, salmon catches in rivers fluctuated between 413 and 9714 kg. From 1997 salmon spawners were captured for artificial spawning. The largest spawners were 120-cm long and weighed 17.5 kg. Alongside untagged spawners, single tagged salmon were also used for spawning purposes. In 1997, a total of 382 000 eggs were obtained. In later years the number of spawns obtained grew, and in 2000 the number of eggs collected was 2 260 000. In 1996, spawns from salmon raised in pools at Świerzenko were collected. In 2000, there were 1168 females (length 30 - 70 cm) from which 9 300 000 eggs were collected. From 1997, large nests were observed at the spawning grounds in the Drawa River. In next years salmon nests were observed in the Drawa River and also in Parsęta and Wieprza rivers. Percentages of recovers from tagged salmon were very low and varied from zero to 7.35. Tagged salmon migrated all over the Baltic Sea. The most often they were caught in the Gulf of Gdańskarea, near Bornholm Island and in the western part of the Gulf of Finland. Salmon entered rivers mainly into Vistula, Drwęca and Wieprza rivers for spawning purposes. Some spawners strayed and entered rivers to which they were not released as smolt. Higher percentage of homing were observed among smolt into Vistula i Drwęca rivers than among smolt released into Pomeranian rivers. Tagged salmon after the firs year reached average length of 59.4 cm and average weight of 2583 g, after the second year 81.8 and 6255 g, after the third year 102.4 cm and 11800 g respectively.

6

Potential rates of the present-day overbank sedimentation in the Vistula valley at the Carpathian Foreland, Southern Poland

67%

Lajczak A.

Quaestiones Geographicae

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1991-1992

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tom 17-18

7

Use of algae for monitoring rivers of Poland - in the light of a new law for environmental protection

67%

Zelazowski E. , Magiera M. , Kawecka B. , Kwandrans J. , Kotowicz J.

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nr 4

8

Carotenoid content in eggs of Atlantic salmon [Salmo salar L.] and brown trout [Salmo trutta L.] entering Polish rivers for spawning or reared in fresh water

67%

Czeczuga B. , Bartel R. , Czeczuga-Semeniuk E.

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2002

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tom 32

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nr 1

EN

The authors investigated the carotenoids content in yellow, yellow-orange, and orange eggs of salmon (Salmo salar L.) and brown trout (Salmo trutta L.) entering Polish rivers for spawning or reared in fresh water. The study shows the presence of females of both salmon and brown trout with the M74 syndrome.

PL

Autorzy stosując chromatografię kolunmową i cienkowarstwową badali zawartość karotenoidów w żółtej, żółto-pomarańczowej i pomarańczowej ikrze 74 samic łososia bałtyckiego (Salmo salar L.) i 14 samic troci (Salmo trutta L.) wchodzących na tarło do rzek Polski i hodowanych w wodzie słodkiej. W ikrze badanych łososi stwierdzono występowanie 15 karotenoiów, zaś w ikrze troci 14. Mutatoksantyna występowała jedynie w ikrze samic łososi. Ogólna zawartość karotenoidów w ikrze samic łososi wahała się od 3,978 do 15,583 μg*g-1 natomiast u troci od 3,762 do 10,473 μg·g~1 świeżej ikry. Średnia zawartość astaksantyny wraz z kantaksantyną (czerwone karotenoidy) w żółtej ikrze łososia wahała się od 12,23 do 14,89%, w ikrze żółto-pomarańczowej od 24,65 do 32,15%, a w ikrze pomarańczowej od 37,98 do 56,64% wszystkich karotenoidów. Natomiast w żółtej ikrze troci astaksantyna wraz z kantaksantyną stanowiła średnio od 13,90 do 14,52%, w żółtopomarańczowej od 25,40 do 34,44%, a w pomarańczowej od 41,63 do 54,51% wszystkich karotenoidów. Z kolei najwięcej żółtych karotenoidów (luteina wraz z zeaksantyną) wystspowało w żółtej ikrze obu gatunków, mniej w ikrze żółto-pomarańczowej i najmniej w ikrze pomarańczowej. Kolor ikry u samic łososia i troci nie zależy od ogólnej ilości karotenoidów, lecz od ilości w niej astaksantyny wraz z kantaksantyną z jednej strony i luteiny wraz z zeaksantyną z drugiej. Jeżeli dominuje astaksantyna wraz z kantaksantyną, ikra jest koloru pomarańczowego lub ciemno pomarańczowego, natomiast przy przewadze luteiny wraz z zeaksantyną ikra przyjmuje zabarwienie żółte. Przyjmując za Petterssonem i Lignellem (1999), że 2,22 μg*g-1 zawartość astaksantyny wraz z kantaksantyną stanowi wielkość progową dla ikry łososi z syndromem M74, to w naszych badaniach żółta ikra zarówno łososia jak i troci zawierała te karotenoidy poniżej wielkości progowej, w ikrze żółto-pomarańczowej tylko 3 samice łososia, a w obrębie ikry pomarańczowej u 15 samic łososia i 3 samic troci zawierały więcej tych karotenoidów niż wynosi wielkość progowa dla syndromu M74.

9

The occurrence of M74 syndrome in Atlantic salmon [Salmo salar L.] individuals entering Polish rivers for spawning or reared in fresh water

67%

Czeczuga B. , Czeczuga-Semeniuk E. , Bartel R. , Semeniuk A. , Grochowski A.

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tom 06

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nr 1