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1

Bieszczady nowym miejscem wystepowania Ashworthius sidemi - azjatyckiego pasozyta przezuwaczy

100%
Drozdz J., Demiaszkiewicz W., Lachowicz J.
Działalność Naukowa PAN. Wybrane Zagadnienia
|
1998
|
tom 06
56-57
2

Przenikniecie azjatyckiego pasozyta dzikich przezuwaczy Ashworthius sidemi /Nematoda, Trichostrongylidae/ na teren bialoruskiej i polskiej czesci Puszczy Bialowieskiej.

86%
Drozdz J., Demiaszkiewicz A. W., Lachowicz J.
Działalność Naukowa PAN. Wybrane Zagadnienia
|
2002
|
tom 14
63-64
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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The nematode community in roe deer (Capreolus capreolus) from southern Poland

86%
Kowal J., Nosal P., Kornas S., Basiaga M., Wajdzik M., Lesiak M., Cywicka D.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
4

Expansion of Ashworthius sidemi in red deer and roe deer from the Lower Silesian Wilderness and its impact on infection with other gastrointestinal nematodes

72%
Demiaszkiewicz A. W., Merta D., Kobielski J., Filip K. J., Pyziel A. M.
Acta Parasitologica
|
2017
|
tom 62
|
nr 4
5

Ognisko aswortiozy dzikich przezuwaczy w Bieszczadach

72%
Drozdz J.
Magazyn Weterynaryjny
|
2001
|
tom 10
|
nr 02
66-68
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Pathological lesions in European bison [Bison bonasus] with infestation by Ashworthius sidemi [Nematoda, Trichostrongylidae]

72%
Osinska B., Demiaszkiewicz A. W., Lachowicz J.
Polish Journal of Veterinary Sciences
|
2010
|
tom 13
|
nr 1
63-67
Asworthius sidemi Schulz, 1933 is a blood sucking gastrointestinal nematode, primarily typical for Asiatic deer. It was found for the first time in Poland in European bison in 1997. To estimate the level of invasion of A. sidemi and histopathological changes connected with the presence of the parasite in the years 2004-2007 parasitological and histopathological examinations of 54 European bison from Białowieża Forest were carried out. Parasitological examination was carried out by the sedimentation method and A. sidemi were diagnosed under a binocular microscope. Samples for histological examination were collected from the abomasum and duodenum walls as well as from regional lymph nodes. Tissue samples were then fixed with 10% buffered formalin, embedded in paraffin, cut in to 5 μm thick sections and stained with hematoxylin and eosin (H&E). Parasitological examinations showed the presence of fourth stage larvae and juvenile forms of A. sidemi. The maximal intensity of invasion rose systematically from 4470 A. sidemi nematodes in 2004/2005 to 44310 in 2006/2007. Histopathological examinations showed infiltrations of inflammatory cells in the walls of abomasa and duodena at various levels of intensity (mainly lymphoid cells and eosinophils), hyperemiae, oedemae and lesions of mucosa and proliferation of lymphatic follicles. In individual cases of dysplasia of epithelial cells, atrophy or hyperplasia of glands and the presence of parasites in the lumen or walls of the abomasum/duodenum were observed. In one case, parasitic nodules were found. In regional lymph nodes proliferation of lymphatic follicles, presence of eosinophils and desolation of reproduction centers were observed. Intensification of histopathological changes was connected to a considerable degree with the developmental stage of A. sidemi as shown by parasitological examination.
7

The first detection of nematodes Ashworthius sidemi in elk Alces alces (L.) in Poland and remarks of ashworthiosis foci limitations

72%
Demiaszkiewicz A. W., Kuligowska I., Lachowicz J., Pyziel A. M., Moskwa B.
Acta Parasitologica
|
2013
|
tom 58
|
nr 4
Ashworthius sidemi, a nematode belonging to the family of Trichostrongylidae, is a primary parasite of the Asian deer, mainly sika deer (Cervus nippon), with which it was introduced to Ukraine, as well as Slovakia, the Czech Republic and France. Migrating red deer carried this parasite from neighboring countries to Polish territory. Until now, in Poland, this parasite has been recorded in European bison, red deer, roe deer and fallow deer. As a result of post-mortem examinations of 10 elk, 2 of them from the Augustów Forest and Biebrza Marshes, A. sidemi were found in abomasa for the first time in Poland. The intensity of the invasions was 120 and 7 specimens, respectively. This finding of Ashworthius sidemi in elk indicates a further expansion of the focus of ashworthiosis in BiaŁowieża towards the north into the Biebrza Marshes and the Augustowska Forest. The growth of the elk population and their tendency for long distance migrations can contribute to the spread of the parasitosis in much greater distances than deer. On the basis of our own research and data from the literature, the current spread of ashworthiosis in Poland is discussed.
8
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Parasites of captive fallow deer (Dama dama L.) from southern Poland with special emphasis on Ashworthius sidemi

72%
Kowal J., Nosal P., Bonczar Z., Wajdzik M.
Annals of Parasitology
|
2012
|
tom 58
|
nr 1
Fallow deer in Poland is an alien species, with an ambiguous legal status. It is considered both, a game and a farm animal, which introductions in recent years led to a substantial increase of its population. As a representative of cervids, it shares with other free-ranging and domestic ruminants many of gastrointestinal helminths, among them an alien Ashworthius sidemi, the nematode of a high pathogenicity. Until now, the parasite was observed in Poland at two foci of the wild (i.e., Bialowieża and Bieszczady forests), but not yet in fallow deer. The present study was intended to recognize the infection level, and helminth species composition, in fallow deer living in captivity. Alimentary tracts of four animals, hunted in enclosure situated in Dulowa Primeval Forest, were dissected. Nematodes belonging to seven species: Spiculopteragia spiculoptera, S. mathevossiani, S. asymmetrica, Nematodirus filicollis, Aonchotheca bovis, Oesophagostomum radiatum and Ashworthius sidemi were recovered, with the latest helminth being predominat. In the present study, the origin of A. sidemi infection, its impact on the host and abomasum nematode communities, as well as the potential parasite spread on other ruminants, were investigated.
9

A novel diagnostic PCR for the gastro-intestinal nematode Ashworthius sidemi

72%
Ljunggren E. L., Gozdzik K.
Wiadomości Parazytologiczne. Suplement
|
2008
|
tom 54
10

Zarażenie jeleni pasożytami w południowo-zachodniej Polsce (Bory Dolnośląskie)

58%
Demiaszkiewicz A. W., Merta D., Kobielski J.
Medycyna Weterynaryjna
|
2016
|
tom 72
|
nr 05
The objective of the study was to determine the composition of the fauna of parasites and the state of infestation by parasites in red deer living in the Lower Silesian wilderness. In order to identify the stomach and intestinal nematodes, the abomasa of nine red deer harvested in the Ruszów Forest District were subjected to full helminthological dissection, coupled with sedimentation of the content. The obtained sediments were preserved in 1-2% formaldehyde solution. In the lab, the preserved sediments from the abomasa were separately diluted in water, thoroughly stirred, and a sample of one-tenth was collected from each. Each sample was then checked in small portions, and all nematodes were isolated. The nematodes collected were preserved in 75% ethyl alcohol with 5% addition of glycerol. In order to determine the infestation by pulmonary nematodes and by trematodes, 73 samples of red deer feces were examined using decantation and Baermann methods. The intensity of invasion was measured as the number of larvae found in 3 g of feces. Additionally, 10 × 10 cm samples of skin and subcutaneous connective tissue were taken from the back regions of 14 red deer, and parasites were isolated from them. A total of ten species of parasites typical of red deer were found: five species of stomach and intestinal nematodes – Spiculopteragia boehmi, Ostertagia leptospicularis, Ostertagia kolchida, Spiculopteragia mathevossiani and Aonchotheca (Capillaria) bovis; three species of pulmonary nematodes – Elaphostrongylus cervi, Varestrongylus sagittatus and Dictyocaulus eckerti; one species of nematode living in tissues – Onchocerca flexuosa, as well as a gadfly Hypoderma diana. Moreover, two alien, invasive species were found: Ashworthius sidemi – a nematode originating from south-eastern Asia and Fascioloides magna – an American trematode. Both of them pose a threat to wild and domestic ungulates. Further research is necessary to determine the extent of infestation concentrations caused by the aforementioned parasites.
11
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Ustalenie zasiegu ognisk aswortiozy dzikich i domowych przezuwaczy we wschodniej i poludniowej Polsce

58%
Demiaszkiewicz A. W., Lachowicz J., Osinska B.
Wiadomości Parazytologiczne
|
2008
|
tom 54
|
nr 3
217-219
12

Parazytofauna żubrów w Puszczy Boreckiej

58%
Demiaszkiewicz A. W., Bielecki W., Rodo A., Pyziel A. M., Filip K. J.
Medycyna Weterynaryjna
|
2018
|
tom 74
|
nr 04
The aim of the study was to determine the parasite species occurring currently in European bison from the Borecka Forest and to estimate prevalence and intensity of their infections. Anatomopathological and parasitological necropsy of four bison from the Borecka Forest has been carried out. 24 bison faecal samples were also analyzed using flotation, decantation and the Baermann method. As a result of performed necropsies and coproscopical analysis, 13 nematode species, 2 species of flukes and 7 species of coccidia were found. In comparison with previous studies, parasitofauna of European bison from the Borecka Forest has been augmented with 6 nematodes species (Ashworthius sidemi, Haemonchus placei, Aonchotheca bilobata, Ostertagia antipini, Ostertagia lyrata and Trichuris ovis), 1 species of fluke (Paramphistomum cervi) and 3 species of coccidia (Eimeria auburnensis, E. canadensis and E. alabamensis). All necropsied bisons were infected with nematodes A. sidemi. The Borecka Forest has been recognized as a new focus of ashwortiosis. Post-mortem examinations confirm the role of parasites, both nematodes and flukes, in the formation of gross lesions in infected bisons.
13

Ashworthius sidemi (Nematoda, Trichostrongylidae) in wild ruminants in Bialowieza Forest

58%
Demiaszkiewicz A. W., Lachowicz J., Osinska B.
Polish Journal of Veterinary Sciences
|
2009
|
tom 12
|
nr 3
Between 2003-2007, abomasa of 91 European bison (Bison bonasus), 4 red deer (Cervus elaphus) and 2 roe deer (Capreolus capreolus) shot in the Białowieża Primeval Forest (Poland) were examined for worms presence. All the animals examined were infected with nematodes A. sidemi with an exception of one bison, that was shot in year 2003. There was much higher average intensity of invasion in bison (5529), than in red deer (85) and in roe deer (1837). The animals were shot in a period from December to March, and the nematodes found in them were fourth stage larvae and immature adult specimens. In the following years of examinations, a gradual increase in average intensity of infection was observed. In 2007, it reached in bison 10814 nematodes. Maximum intensity of invasion was found in this year as well and it reached 44310 nematodes in one bison. Pathological changes such as an oedema, hyperaemia and effusion in the abomasum and duodenum mucosa were most clearly seen in the calves that were highly infected. These changes probably lead to chronic diarrhoea, deterioration and deaths of young animals.
14
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Nematodes of the large intestine of the European bison of the Bialowieza National Park

58%
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.
15
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Influence of management and biological factors on the spread of parasitic infection in the wild - a case of blood sucking nematode Ashworthius sidemi invasion in European bison (Bison bonasus) in the Bialowieza Primeval Forest, Poland

58%
Kolodziej-Sobocinska M., Demiaszkiewicz A. W., Lachowicz J., Borowik T., Kowalczyk R.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
16

Aswortioza - nowa parazytoza dzikich przezuwaczy

58%
Drozdz J., Demiaszkiewicz A. W., Lachowicz J.
Medycyna Weterynaryjna
|
2000
|
tom 56
|
nr 01
32-35
As a result of parasitological necropsies of 28 wild ruminants (8 European bisons, 2 roe deer and 18 red deer) shot in the Bieszczady Mountains, 100% infection by blood sucking nematode Ashworthius sidemi, localised in abomasum, was determined. In most cases there were mass invasions. Infection of wild animals by A. sidemi takes place mainly from June to September. Nematodes from this infection reach sexual maturity not before June of the following year, and from September of the next year begins the process of freeing the wild ruminants from parasites of this generation. Thus, from June to September in wild ruminants in the Bieszczady Mountains two generations of nematodes occur: the previous year one in the form of sexually matured specimens and the current year one in the form of the 4th and 5th stadium larvae and young adults specimens. In winter and spring till June only one generation of nematodes occurs in the host in the form of arrested larvae of the 4th stadium and young adults. Moreover, morfology of eggs, invasive larvae and adult A. sidemi were described. This will help at intra vitam and post mortem diagnosis of this parasitosis. The authors believe that this nematode can occur in cattle and sheep on woodland pastures and meadows in the Bieszczady Mountains.
17

Ashworthius sidemi [Nematoda, Trichostrongylidae] a new parasite of the European bison Bison bonasus [L.] and the question of independence of A.gagarini

58%
Drozdz J., Demiaszkiewicz A. W., Lachowicz J.
Acta Parasitologica
|
1998
|
tom 43
|
nr 2
Four free-living European bison of the Białowieża/Caucasus line which were shot in February 1997 within Lutowisko Forestry District in the Bieszczady range of the Eastern Carpathians, Poland, were all infected by Ashworthius sidemi at a mean intensity of infection of 1542 worms. On the basis of study of nematodes in Cervus elaphus from France, typical examples of A. gagarini, and 629 specimens of Ashworthius collected from the Bieszczady bison, A. gagarini was recognized as a junior synonym of A. sidemi.
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