Wyniki wyszukiwania - Biblioteka Nauki

1

Chelon labrosus (Risso, 1827) - the first record from Lake Dąbie (Poland)

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Czerniejewski P. , Keszka S. , Rybczyk A.

Oceanologia

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2008

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tom 50

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nr 2

281-284

EN

We report on the first occurrence of Chelon labrosus in a Polish estuary. One Ch. labrosus was caught with a fyke net in the northern part of Lake Dąbie (Odra estuary) on 14 November 2007. It measured 266.92 mm in overall length and weighed 176.8 g. The fish’s metric and meristic characters, age by scale, condition, sex and maturity stage (Maier’s scale) were determined.

2

Parasite fauna of smelt, Osmerus eperlanus [L.] from Lake Dabie, Northwestern Poland

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Wisniewski G. , Piasecki W.

Wiadomości Parazytologiczne. Suplement

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2001

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tom 47

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nr 2

3

Parasite fauna of asp, Aspius aspius [L.] from Lake Dabie, Northwestern Poland

100%

Hryczynska M. , Piasecki W.

Wiadomości Parazytologiczne. Suplement

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2001

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tom 47

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nr 2

4

Parasite fauna of pike, Esox lucius L. from Lake Dabie, Northwestern Poland

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Lucyszyn P. , Piasecki W.

Wiadomości Parazytologiczne. Suplement

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2001

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tom 47

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nr 2

5

The occurrence of Acanthocyclops robustus [Sars] [Crustacea, Copepoda] in Lake Dabie

100%

Piasecki W. G.

Folia Universitatis Agriculturae Stetinensis. Piscaria

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2001

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tom 28

6

On some problems of reproduction of ruff, Gymnocephalus cernuus (L., 1758) in the Lake Dabie

84%

Neja Z.

Acta Ichthyologica et Piscatoria

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1988

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tom 18

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nr 2

7

A new record of the invasive blue crab (Callinectes sapidus Rathbun, 1896) and his parasite from the Baltic basin

84%

Czerniejewski P. , Kosakowska N. , Linowska A. , Rybczyk A.

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tom 62

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nr 1

8

A preliminary biological and morphometric characteristics of river lamprey [Lampetra fluviatilis [L.]] from Lake Dąbie

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Raczynski M. , Filipiak J.

Electronic Journal of Polish Agricultural Universities. Series Fisheries

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1999

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tom 02

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nr 2

EN

The river lamprey caught in Lake Dabie in the autumn seasons of 1997 (35 individuals) and 1998 (53 individuals) had mean individual weights of 145.1 and 139.3 g, respectively, their respective mean body lengths being 443.9 and 400.8 mm. The largest and the smallest individuals weighed 226.9 and 70.4 g, respectively. The post-dorsal lengths was the only plastic character, out of the 16 characters determined separately in females and males (sex ration of 2.1:1), which showed a substantial between-sexes difference.

9

Nutritional status of roach Rutilus rutilus [L.] in the River Odra estuary

84%

Wieski K. , Zalachowski W.

Acta Ichthyologica et Piscatoria

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2000

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tom 30

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nr 1

EN

Nutritional status of roach inhabiting the River Odra estuary was studied with both a traditional (morpho-physiological) approach and a bioenergetic one. A total of 999 individuals caught from the Międzyodrze, Lake Dąbie, the Szczecin Lagoon, and the Pomeranian Bay were examined. The Pomeranian Bay individuals were found to be in the best nutritional condition. None of the traditional condition coefficients was able to clearly reflect seasonal changes over the year. Those changes could be observed instead by analysing bioenergetic indices.

PL

Za pomocą metody tradycyjnej (morfofizjologicznej) i bioenergetycznej zbadany został stan odżywienia płoci z ujścia Odry. Przebadano 999 ryb pochodzących Międzydorza, jeziora Dąbie, Zalewu Szczecińskiego oraz Zatoki Pomorskiej. Najlepszą kondycją, wyrażoną zależnością L-W, odznaczały się ryby z Międzyodrza i Zatoki Pomorskiej, gorszą z Dąbia i Zalewu. Żaden z tradycyjnych wskaźników stanu odżywienia wyraźnie nie odzwierciedlał sezonowości zmian w cyklu rocznym. Zmiany takie dały się uchwycić poprzez analizę wskaźników bioenergetycznych. Płocie z Międzyodrza, wyróżniające się najmniejszą wartością energetyczną na jednostkę masy, były zarazem jedynymi spośród zbadanych, które wykazywały równomierne tempo wzrostu. Największym tempem wzrostu ekwiwalentu energetycznego masy odznaczały się płocie z Zatoki Pomorskiej i Międzyodrza, mniejszym - z Dąbia i Zalewu. W Międzyodrzu tempo wzrostu ekwiwalentu energetycznego było mniejsze niż tempo wzrostu masy. Analiza regresji wykazała lepszą efektywność wartości energetycznej ciała od wskaźników morfofizjologicznych jako metody oceny stanu odżywienia płoci.

10

Age, growth, and condition of perch in the Szczecin Lagoon

84%

Szypula J.

Electronic Journal of Polish Agricultural Universities. Series Fisheries

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2000

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tom 03

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nr 2

EN

The study involved analysis, performed with standard methods, of length and weight growth of 202 perch individuals caught in November 1999 from the Szczecin Lagoon. The verge coefficient was factored in both when determining the age distribution and when analysing length and weight growth by calculating mean values in age groups (when Kr > 0.50, the number of annual rings was increased by 1).

11

Growth of roach Rutilus rutilus [L.] in the River Odra estuary

84%

Wieski K. , Zalachowski W.

Acta Ichthyologica et Piscatoria

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2000

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tom 30

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nr 1

EN

The back-calculation method was applied to determining growth rate of roach caught in the Międzyodrze, Lake Dąbie, Szczecin Lagoon, and the Pomeranian Bay. Samples were collected from April 1995 to October 1997. The Pomeranian Bay and Międzyodrze individuals showed a faster growth rate than that attributed to other stocks. In each of the areas studied, older females grew faster than males. The Odra estuary roach population can be regarded as one of to the fastest growing populations of the species.

PL

Za pomocą metody odczytów wstecznych zbadano tempo wzrostu płoci pochodzących z Międzyodrza, jeziora Dąbie, Zalewu Szczecińskiego oraz Zatoki Pomorskiej. Próby pobierano w okresie od kwietnia 1995 do października 1997 roku. Zastosowanie modelu von Bertalanffy'ego oraz współczynnika wzrostu GL pozwala na uszeregowanie tempa wzrostu długości w poszczególnych zbiornikach: od najwolniejszego w jeziorze Dąbie poprzez wzrastające w Zalewie Szczecińskim i Międzyodrzu, do najszybszego w Zatoce Pomorskiej. W Międzyodrzu tempo wzrostu płoci było równomierne, podczas gdy w pozostałych zbiornikach malało z wiekiem ryb. W każdym z badanych zbiorników samice w starszych latach życia charakteryzowały się szybszym tempem wzrostu. Modele wzrostu masy potwierdziły i uwydatniły tendencje wykazane w modelach wzrostu długości. Stwierdzono obecność zjawiska Rosy- Lee, które wyraźniej zaznaczyło się w poszczególnych zbiornikach niż w całości zbadanego materiału. W młodszych grupach wieku najsilniej zaznacza się w próbie z jeziora Dąbie (znacznie szybszy wzrost ryb 3-letnich), w starszych grupach wyraźniej występuje w próbach z Zatoki Pomorskiej oraz Zalewu, najmniej zaś w materiale z Międzyodrza. W przypadku płoci z jeziora Dąbie stwierdzono silną korelację pomiędzy przyrostem ryb jednorocznych a temperaturą powietrza zmierzoną na stacjach meteorologicznych w Szczecinie Dąbiu oraz Lipkach.

12

Contents of some heavy metals in chosen tissues of Gymnocephalus cernuus L.

84%

Hlynczak A. J. , Domagala J. , Baranowska-Bosiacka I. , Rutkowska M.

Biological Bulletin of Poznań. Supplement

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1996

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tom 33

13

Four pathogens found associated with Eriocheir sinensis H. Milne-Edwards, 1853 (Crustacea: Brachyura: Grapsidae) from Lake Dabie (Poland)

67%

Sobecka E. , Hajek G. J. , Skorupinski L.

Oceanological and Hydrobiological Studies

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2011

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tom 40

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nr 1

14

The annual reproductive cycle of rudd, Scardinius erythrophthalmus (Cyprinidae) from the Lower Oder River and Lake Dabie, (NW Poland)

67%

Domagala J. , Kirczuk L. , Dziewulska K. , Pilecka-Rapacz M.

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tom 68

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nr 1

15

Organic pollution of Lake Dabie waters in 1997-2000

67%

Nedzarek A. , Kubiak J. , Torz A.

Electronic Journal of Polish Agricultural Universities. Series Fisheries

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2007

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tom 10

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nr 3

16

Heavy metals in selected elements of the Lake Dabie ecosystem

67%

Piotrowski S.

Biological Bulletin of Poznań. Supplement

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1996

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tom 33

17

Distribution, genetic structure and ecological role of Dreissena polymorpha (Pallas) in Lake Dabie, Western Pomerania, Poland

59%

Piesik Z. , Zielinski R. , Wachowiak-Zielinska M. , Ochman T. , Soroka M. , Polok K.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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1998

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tom 02

EN

Dreissena polymorpha inhabits about 46.5% of the bottom area in Lake Dabie. It is most abundant in the northern part of the lake and sporadically occurs in its southern part. The average density of the zebra mussel is 891 individuals/m², while its wet weight is 1374 g/ m². In the settled areas the density of the zebra mussel reaches 1734 individuals/ m². There were presently established 7 age-groups from 0 to 6+. The highest number of specimens occurred in the age-groups between 1+ and 3+, while the lowest number - in the groups 0, 5 and 6+. Strong eutrophication and pollution of Lake Dabie on its southern side, combined with sedimentation of the extensive amounts of seston carried in by the Płonia and Regalica rivers, do not create favourable conditions for development of Dreissena. D. polymorpha plays a very positive role in the lake ecosystem through its biofiltrating action, contributing thus to an increase of water clarity and to limitation of phytoplankton development through cumulating nutrients in its biomass. Electrophoretic analysis of 9 enzymatic loci revealed strong polymorphism of the studied population of the zebra mussel: percent of polymorphic loci - 100, mean number of alleles in locus – 3.4, coefficient of expected heterozygosity per locus in the population, HS - 0.335, percentage of separate genotypes - 69%, in this number unique genotypes - 58%. A very strong scattering of the alleles was stated within the entire population. In each aggregation, on average, 90% of the specimens have a separate genotype. Each of the five defined groups of D. polymorpha, representing profiles I-V, respectively, had similar genetic composition. The values of the genetic similarity among the studied groups of the zebra mussel ranged from 0.96 to 0.99.

18

Parasite fauna of ide, Leuciscus idus [L.] in Lake Dabie, Poland

59%

Sobecka E. , Jurkiewicz E. , Piasecki W.

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tom 34

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nr 1

EN

Background. The previous survey on parasites of ide in Poland was carried out in 1987 and there has been no data available on the parasites of this fish from areas in Poland west of the Vistula River. The aim of the present study was to survey the parasite fauna of ide, Leuciscus idus in Lake Dąbie and to compare the. Materials and Methods. Standard parasitological procedures were applied to 110 individuals of ide, Leuciscus idus (L.) caught within 2000-2003 in Lake Dąbie, Szczecin, Poland. Results. All fish examined were infected with parasites. The parasites recovered, represented 32 species and 11 higher taxa (Oligohymenophorea, Myxosporea, Monogenea, Digenea, Nematoda, Palaeacanthocephala, Euacanthocephala, Hirudinea, Copepoda, Branchiura, and Bivalvia). A total of 15 parasite species represented new host records for ide in Poland (Dermocystidium sp. , Myxidium pfeifferi, Zschokella nova, Myxobolus carassii, M. muelleri, Henneguya cutanea, Tripartiella copisa, Paradiplozoon bliccae, Gyrodactylus prostae, Anisakis simplex, Streptocara crassicauda, Philometra rischta, Argulus foliaceus, Piscicola geometra, Hemiclepsis marginata). The highest values of prevalence were recorded for: Ergasilus sieboldi, Diplostomum spp., Tylodephys clavata, and Paracoenogonimus ovatus. Results. with the relevant data on the subject published by other authors. Conclusion. Infection parameters of the presently surveyed ide were distinctly different from those previously described. It is possible that populations of some parasites grew within the past 20 years.