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Nematodes of the large intestine of the European bison of the Bialowieza National Park

100%

Demiaszkiewicz A. W., Pyziel A. M., Kuligowska I., Lachowicz J., Krzysiak M. K.

Annals of Parasitology

2012

tom 58

nr 1

The present study was conducted on 31 males and females of the European bison, eliminated during the winter seasons 2007–2011 in the Białowieża Primeval Forest, Poland. The caeca of 14 free-ranging bison, aged from 3 months up to 16 years, the most favorable infection site for the large intestine nematodes, were investigated during the winter of 2007/2008. The parasitological autopsies of the large intestines of 9 free-ranging bison aged from 5 months up to 10 years as well as 9 bison kept in the close reserves aged from one up to 20 years were done during the winter seasons of 2008–2011 to determine localization of nematodes in large intestine and the total intensity of parasite infection. Five species of nematodes (i.e., Trichuris ovis, Oesophagostomum venulosum, O. radiatum, Ashworthius sidemi, Nematodirus helvetianus) were found in dissected caecum of bison culled during the winter of 2007/2008. During the seasons of 2008–2010, 6 species of nematodes were found in the large intestine of bison (i.e., T. ovis, O. venulosum, O. radiatum, A. sidemi, N. roscidus and Bunostomum trigonocephalum). We did not find any nematodes in the lumen of the large intestine of captive bison culled during the seasons of 2010/2011. The results of the present study indicate that the intensity of infection by the large intestine nematodes of the European bison in the Białowieża Primeval Forest has stayed at the comparable level throughout the last 20 years; however the number of nematode species has increased. The observed level of parasitic infection is typical of subclinical parasitoses.

Nicienie jelita grubego żubrów

100%

Drozdz J., Demiaszkiewicz A. W., Lachowicz J.

Wiadomości Parazytologiczne

1990

tom 36

nr 1-3

In the Białowieża Forest the parasitological autopsy of large intestine of 6 bisons was made at the beginning of winter of 1987-1988, and 9 dissections were made in the latter part of both seasons. Four species of nematodes were found to occur together: Chabertia ovina, Oesophagostomum radiatum, Oe. venulosum and Trichocephalus ovis. At the end of wintering in bisons the invasion of Ch. ovina appeared in high percent of animals, but the intensity of it was low. However the extensity and intensity of invasion of three remaining species of nematodes distinctly arose. In comparison with bisons in closed reserves, free living bisons assimilated Oe. venulosum and Ch. ovina. It is likely that the winter quarters are the source of invasion. It can be explained by the permanent accumulation of feaces with invasive forms of nematodes, and by feeding bisons on the great amount of hay, in which the invasive forms of nematodes may also occur.

Ograniczanie wyników

1 Annals of Parasitology

1 Wiadomości Parazytologiczne

2 Demiaszkiewicz A. W.

2 Lachowicz J.

1 Drozdz J.

1 Krzysiak M. K.

1 Kuligowska I.

1 Pyziel A. M.

1 2012

1 1990

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Nematodes of the large intestine of the European bison of the Bialowieza National Park

Nicienie jelita grubego żubrów