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1

Seasonal occurrence of parasites of flounder Platichthys flesus (L.) from the Gulf of Gdansk

100%
Chibani M., Rokicki J.
Oceanological and Hydrobiological Studies
|
2004
|
issue 3
17-30
EN
A total of 1509 specimens of flounder Platichthys flesus (L.) were sampled in the period from April 1998 to March 2000 from the Gulf of Gdansk. The seasonal occurrence of all parasite species was calculated. The results indicated that some parasite species occur seasonally (Diplostomum sp., Raphidascaris acus, Dichelyne minutus, Echinorhynchus gadi and Pomphorhynchus laevis), while others do not (Trichodina borealis, Hysterothylacium aduncum, Cucullanus heterochrous). Since some parasites occurred year-round at low levels of infection, it was difficult to determine if they exhibited seasonality or not (Glugea anomala, Gyrodactylus unicopula, Diplostomum mergi, Bothriocephalus scorpii and Lampetra sp.). Gyrodactylus flesi was noted occasionally
2

Relatioship between echeneidid fish Remora remora (L.) and shark Prionace glauca (L.)

100%
Morozinska J., Rokicki J.
Oceanological Studies
|
1993
|
issue 64/3
297-303
3

The activity of selected hydrolases in excretion-secretion products and exctracts from larvae and mature specimens of Cystidicola farionis

81%
Dziekonska-Rynko J., Rokicki J., Jablonowski Z.
Oceanological and Hydrobiological Studies
|
2003
|
issue 4
117-129
EN
The results of the study indicated that there are differences in the activity of hydrolases depending on the development stage of the parasite and the season of the year. Twelve hydrolases were confirmed to be active in excretion-secretion (ES) products of larvae collected in fall, while nine were active in spring. The activity of hydrolase from the extracts of fall samples was most often higher than in spring. Eight active hydrolases were confirmed in mature specimens both in spring and fall, and they exhibited a lower activity level than the ES products of larvae. However, the activity of enzymes was higher in mature specimens than in larvae in the extracts from both spring and fall samples.
4

Trace metals in Gasterosteus aculeatus L. and its parasites from the Gulf of Gdansk

81%
Morozinska_Gogol J., Rokicki J., Frelek K., Szefer P.
Oceanological Studies
|
1998
|
vol. 27
|
issue 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.
5
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Pathological changes of stomach in ringed seal (Pusa hispida) from Arviat (North Canada) caused by anisakid nematodes

81%
Sołtysiak Z., Simard M., Rokicki J.
Polish Journal of Veterinary Sciences
|
2013
|
issue 1
6

The impact of animal and plant proteases on Namatoda 3rd stage Anisakis simplex larvae

81%
Dziekonska-Rynko A., Rokicki J., Jablonowski Z.
Oceanological Studies
|
1997
|
vol. 26
|
issue 1
103-107
EN
The influence of two animal and plant proteases was investigated in vitro on 3rd stage Anisakis simplex B larvae.The larvae were placed in 3 series of 5 sterile test-tubes containing 0.1% solu-tions of tyrosine, pepsin and papain. Physiological saline solution was used as control. It was found that Anisakis simplex B larvae are the most resistant to pepsin treatment.
7
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Parallel anisotropic mesh refinement with dynamic load balancing for transonic flow simulations

81%
Gepner S., Majewski J., Rokicki J.
|
2017
|
issue 2
8

Variability of perch, Perca fluviatilis L. helminth fauna in the Gulf of Gansk, Baltic Sea

81%
Rolbiecki L., Rokicki J., Szugaj K.
Oceanological Studies
|
2002
|
vol. 31
|
issue 1-2
43-50
EN
A total of 233 perch, Perca fluviatilis L. specimens caught within April 1995?June 1997 at two sites in the Gulf of Gdansk were examined. The fish were found to host flukes (metacercariae of Tylodelphys clavata, Diplostomum spp. and adult Bunodera luciopercae), cestodes (plerocerkoids of Eubothrium crassum and Triaenophorus nodulosus, and adult Proteocephalus percae), nematodes (Camallanus lacustris, C. truncatus, Hysterothylacium aduncum L3 and adult), and acanthocephalans (Acanthocephalus lucii, A. clavula). Most prevalent were A. lucii (33.9%) and T. clavata (28.8%). Most of the parasites were found in the perch caught off the Vistula mouth and the level of infection was higher there than elsewhere in the Gulf, which indicates that ecological and hydrological conditions in the area enhance parasitism.
9

The total body condition factor of southern Baltic stocks of herring Clupea harengus membras (L.) infected and non-infected with Anisakis larvae

81%
Podolska M., Wyszynski M., Szopinska E., Rokicki J.
Oceanological Studies
|
1997
|
vol. 26
|
issue 1
109-117
EN
From January 1995 to January 1996 and in April 1996, 9026 specimens of herring Clupea haren-gus membras were caught in ICES-Subdivisions 24, 25, 26 and 27 in the southern Baltic. All fish were examined for nematodes. 5242 Anisakis simplex (Rudolphi, 1809) and 3 specimens of Con-tracaecum osculatum (Rudolphi, 1809) (3rd stage larvae) were collected. Only coastal spring herring were infected with A. simplex; C. osculatum was found in open sea herring. The total body condition factor K of each fish was calculated according to Fulton. The mean body condition factor was found to be higher in infected than in non-infected fish. The highest value of factor K was observed in fish with gonads at stage 6. Factor K reached a minimum in fish in-fected with 11-20 specimens of A. simplex larvae.
10

Occurence dynamics of Eubrachiella antarctica (Quidor, 1906) on Dissostichus eleginoides from South Georgia

81%
el-Mehlawy M., Rokicki J., Podolska M.
Oceanological Studies
|
1993
|
issue 64/3
291-296
11

The first record of the nematode Anguillicola crassus (Nematoda: Dracunculoidea) in eel of the Gulf of Gdansk (Poland)

71%
Rolbiecki L., Rokicki R. J., Rokicki J., Wojtkiewicz W. D., Wojtkiewicz D.
Oceanological Studies
|
2000
|
vol. 29
|
issue 2
75-81
EN
The study of parasitic fauna of the Gulf of Gdansk eel revealed the presence of the nematode Anguillicola crassus, not recorded in the area before. The relatively high level of infection (prevalence of 41.9%; mean intensity of 3.0 ind.) is indicative of the nematode posing a hazard for the Gulf of Gdansk eel population. More than half of the infected eel showed anatomo-pathological changes typical of anguillicolosis.
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