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Morphological features of zope, Abramis ballerus, from the middle stretch of the Odra River, Poland

100%

Szlachciak J.

Acta Ichthyologica et Piscatoria

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2005

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tom 35

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nr 2

Background. The zope (blue bream), Abramis ballerus (L., 1758), is a cyprinid fish without economic importance, and its morphology has been poorly known. The monophyly of the genus Abramis is still unclear; therefore any new contribution to the knowledge on the morphology of zope could shed a new light on the phylogeny of this group of fishes. The aim of the present study was to learn and describe meristic- and morphometric futures of zope and to compare the results with published data. Materials and Methods. A total of 40 specimens of the zope, Abramis ballerus, were caught in the middle stretch of the Odra River, near the city of Głogów, western Poland, in October 2002. For each fish, 21 biometric features were measured and selected meristic features (external and internal) were determined. Cephalic sensory canals were studied and their pores were counted. Results. The coefficient of variation for the body proportions of zope from the middle stretch of the Odra River ranged from 3.89% to 19.13% and its principal features were as follows: D III 8–10; A III 34–43; P I 14–18; V II 7–9; l.l. 62–75. It had one row of pharyngeal teeth, most frequently, in 5–5 pattern. The total number of vertebrae ranged from 46 to 48, (mean 47.38). The preoperculo-mandibular canal (CPM) and infraorbital canal (CIO) had the highest number of pores. Conclusion. The presently reported study shows that the sample analysed did not differ significantly from the population of the Dniepr River, although it differed significantly (in body proportions) from those of Lake Dąbie. The majority of values of meristic features did not differ significantly from those found in literature. However, there is still too little comparative material regarding internal meristic features and especially its osteology.

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Comparative analysis of ciliates [Ciliophora] parasitic on gills of three species of cyprinid fishes from Dabie Lake

80%

Wierzbicka J., Sobecka E.

Wiadomości Parazytologiczne

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1998

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tom 44

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nr 3

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Seasonal dynamics of Phyllodistomum folium [von Olfers, 1816] [Trematoda, Gorgoderidae] in blue bream, Abramis ballerus [L.] and ruffe, Gymnocephalus cernuus [L.] from the Oder River [Germany-Poland]

80%

Pietrock M., Mattheis T., Kruger R., Meinelt T.

Acta Parasitologica

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1999

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tom 44

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nr 3

From May 1993 to April 1995 a comparative study on the seasonal dynamics of Phyllodistomum folium (von Olfers, 1816) infection was carried out on 633 blue bream, Abramis ballerus (L.) and 266 ruffe, Gymnocephalus cernuus (L.) from the Oder River (Germany/Poland). In blue bream, the monthly prevalences and mean intensities of infection varied irregularly throughout the year: prevalence values attained up to 50% and mean intensities reached 7.6 (range: 1-34) trematodes per infected fish. Conversely, in ruffe a temperature dependent occurrence of P. folium was observed: both the prevalence and mean intensity of infection were significantly higher at a water temperature beneath 10°C than above, with a highest monthly prevalence of 60.8% and a mean intensity of 2.9 (range: 1-7) P. folium. Juvenile and gravid trematodes were found in blue bream and ruffe at all seasons. Based on this study, it is concluded that (a) infection of fish is possible throughout the year, and that (b) modifications in course of infection are determined by the host species rather than on water temperature.

Ograniczanie wyników

1 Acta Ichthyologica et Piscatoria

1 Acta Parasitologica

1 Wiadomości Parazytologiczne

1 Kruger R.

1 Mattheis T.

1 Meinelt T.

1 Pietrock M.

1 Sobecka E.

1 Szlachciak J.

1 Wierzbicka J.

1 2005

1 1999

1 1998

Morphological features of zope, Abramis ballerus, from the middle stretch of the Odra River, Poland

Comparative analysis of ciliates [Ciliophora] parasitic on gills of three species of cyprinid fishes from Dabie Lake

Seasonal dynamics of Phyllodistomum folium [von Olfers, 1816] [Trematoda, Gorgoderidae] in blue bream, Abramis ballerus [L.] and ruffe, Gymnocephalus cernuus [L.] from the Oder River [Germany-Poland]