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1
Content available Changes in the parasite communities as one of the potential causes of decline in abundance of the three-spined sticklebacks in the Puck Bay
Morozińska-Gogol J.
Oceanologia
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2015
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No. 57 (3)
280--287
EN
In the past, the Puck Bay was a very important area for freshwater and marine ichthyofauna. Due to anthropogenic degradation of the environment, especially eutrophication, commercially important fish species have lost spawning grounds and their distribution and abundance fell significantly. A sharp increase in the number of Gasterosteus aculeatus was recorded since the mid-seventies of the twentieth century. Sticklebacks had become the dominant species and were distributed evenly in the coastal waters. But now, the numbers of sticklebacks are decreasing. In this paper, the parasite community of the three-spined sticklebacks was studied. The values of parasitological indices are counted and compared with previous data. Possible consequences of the harboured parasites for body condition, fecundity and changes in host behaviour are described. Also the other possible reasons for the current reduction in the number of sticklebacks in the Puck Bay are analyzed.
2
Content available remote Changes in levels of infection with Schistocephalus solidus (Müller 1776) of the three-spined stickleback Gasterosteus aculeatus (Actinopterygii: Gasterosteidae) from the Gdynia Marina [commun.]
Morozińska-Gogol J.
Oceanologia
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2011
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No. 53 (1)
181-187
EN
This paper analyses the changes in the level of infection with the freshwater parasite Schistocephalus solidus of the three-spined stickleback from the Gdynia Marina. Environmental factors such as salinity, pollution and eutrophication or the presence of other species affect the transmission of parasites. Infection indices have been increasing since the 1990s. Differences in the infection level of morphological forms were also found: this may be due to their environmental preferences.
3
Content available remote Alien species of fish parasites in the coastal lakes and lagoons of the southern Baltic
Morozińska-Gogol J.
Oceanologia
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2009
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No. 51 (1)
105-115
EN
Alien species are now found all over the world. New fish parasites have been unintentionally introduced with infected alien fish imported for aquaculture or have sometimes spread with their intermediate invertebrate hosts transported in the ballast waters of ships. Four alien fish parasites have been recorded in Polish coastal lakes and lagoons, all parasitising eels. Three were introduced with the final host - the Japanese eel - introduced for aquaculture (Anguillicola crassus, Pseudodactylogyrus anguillae and Pseudodactylogyrus bini) and one (Paratenuisentis ambiguus) with its sole intermediate host (Gammarus tigrinus).
4
Content available remote The first record of Paratenuisentis ambiguus (Acanthocephala, Tenuisentidae) in Poland [commun.]
Morozińska-Gogol J.
Oceanologia
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2008
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No. 50 (2)
275-279
EN
Paratenuisentis ambiguus, an acanthocephalan originating from North America, is an alien species parasitising the European eel Anguilla anguilla. It was first recorded in Lake Lebsko, on the central coast of Poland. The report gives morphometric measurements of male and female P. ambiguus from this locality. Because of the spread of the intermediate host Gammarus tigrinus and the appearance of new adults in eels along the southern Baltic Coast, P. ambiguus is evidently able to complete its life cycle in Baltic coastal waters.
5
Trace metals in Gasterosteus aculeatus L. and its parasites from the Gulf of Gdańsk
Morozińska-Gogol J., Rokicki J., Frelek K., Szefer P.
Oceanological Studies
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1998
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Vol. 27, No. 3
71-75
EN
In this study the concentrations of trace metals in typical parasites of the three-spined stickleback, i.e. Schistocephalus solidus (Cestoda) and Thersitina gasterostei (Copepoda), and in the sticklebacks (infected or uninfected) were compared. Concentrations of Mn, Co, Ni, Cu, Zn, Cd and Pb were determined. The accumulations of metals suggested that S. solidus, T. gasterostei and their hosts could serve as biological indicators of heavy metal contamination.
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