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1

Urban and forest-living blackbirds Turdus merula as hosts of Borreliella spp. infected ticks

100%
Gryczynska A.
Polish Journal of Ecology
|
2018
|
tom 66
|
nr 3
The effect of urbanisation on parasite prevalence, especially these associated with human diseases, such as Lyme borreliosis, is of high interest. The blackbird Turdus merula is a ground-feeding species particularly predisposed to constitute a Borreliella spp. (Lyme borreliosis causative agent) reservoir. So, the aim of the study was to examine if the tick infestation level and their Borreliella spp. infection prevalence differs in blackbirds resident in two disparate habitats in Poland – one highly urbanized (in Warsaw agglomeration) and the other forested (in Mazurian Lake region). The infection in ticks feeding on blackbirds was ascertained based on detection of bacterium DNA (PCR). The prevalence of tick infestation in urban and forest-living blackbirds was similar (90 and 91.7%, respectively) but the mean number of parasites per bird was markedly greater in the forest (4.0 ind.) than in the urban populations (1.5 ind.). Even though, the Borreliella spp. infection of the ticks was significantly greater in the urban (46.7%) than in forest habitat (35.4%). Additionally, in the urban site more birds carry at least one infected tick than in the forest. The results of the study seem to confirm the role of blackbirds in establishing Borreliella spp. reservoir. Special regard should be given to highly urbanized areas, where the relative increase in the relevance of birds as tick hosts and pathogen transmitters may pose high risk to public health. Thus, the study constitutes a small-scale but an important contribution to our understanding of the role of birds in maintenance of Borreliella spp. foci in urban habitats.
2

Ekologia boreliozy z Lyme - rola ladowych zwierzat kregowych

100%
Gryczynska A.
Wiadomości Ekologiczne
|
1997
|
tom 43
|
nr 3
207-222
3
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Passerine birds as a natural reservoir of Borrelia burgdorferi sensu lato spirochetes in the Masurian Lake District

63%
Gryczynska A., Zgodka A.
Wiadomości Parazytologiczne
|
1998
|
tom 44
|
nr 3
4

Preliminary analysis of genetic variability in Montagu's Harrier (Circus pygargus) using cross-amplified microsatellites

51%
Rutkowski R., Krupinski D., Kitowski I., Gryczynska A.
Annales Zoologici
|
2014
|
tom 64
|
nr 3
The aim of our study was to find suitable molecular markers for genetic studies of the population of Montagu’s harrier Circus pygargus. We used the crossspecies amplification strategy to test the usefulness of 24 primer pairs, amplifying the microsatellite loci of several other members of Accipitridae. The analysis was performed on 139 Montagu’s harriers from breeding populations in Spain and Poland. We found an amplification success of 50%; however, the level of polymorphism in cross-amplified microsatellites was low, especially in terms of heterozygosity. We did not find significant differences in genetic variability, estimated based on microsatellite markers, between breeding populations from Spain and Poland. The level of genetic differentiation between these two populations was low (F ST = 0.016), although significant. An analysis of genotypes of nestlings in 10 nests suggested one case of extra-pair paternity.
5
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Parasites of chaffinch [Fringilla coelebs] population. Part 2. Blood parasites

51%
Pawelczyk A., Gryczynska A., Mazgajski T. D.
Wiadomości Parazytologiczne
|
2003
|
tom 49
|
nr 1
Blood parasites of Chaffinches caught from June to October near Łuknajno Lake (Mazurian Lakeland) were studied. Only parasites belonging to the genera Haemoproteus were found. A decrease in prevalence as the season progressed was observed. No differences in blood parasite infections in relation to the sex of the birds were found. Also males body weight was not affected by the presence of parasites.
6

Analysis of Ixodes ricinus [L.] tick burdens in a resident passerine bird community in the Mazurian Lake Region [Northeastern Poland]

51%
Gryczynska A., Barkowska M., Siemiatkowski M.
Acta Parasitologica
|
2002
|
tom 47
|
nr 1
The abundance of birds and their tick parasites were estimated in a residential avian community located in the Mazurian Lake region (NE Poland). A total of 1624 passerine birds (representing 45 species) were captured, of which 25% were infested with at least one tick. All the ticks belonged to the species Ixodes ricinus. The highest tick infestation prevalence (>50%) were recorded for dunnock (Prunella modularis), tree pipit (Anthus trivialis), hawfinch (Coccothraustes coccothraustes) and blackbird (Turdus merula). Changes in tick infestation prevalence of passerine birds are seasonal. June and September were the two months in which tick infestation rates were the highest. The percentage of birds that were tick carriers was significantly greater in mixed coniferous forest than in alder swamp forest (respectively 32% and 20% of birds were infested with ticks).
7
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Parasites of chaffinch [Fringilla coelebs] population. Part I. Coccidia [Protozoa, Apicomplexa]

51%
Gryczynska A., Dolnik O., Mazgajski T. D.
Wiadomości Parazytologiczne
|
1999
|
tom 45
|
nr 4
Coccidia infection in Chaffinch population in Mazurian Lakeland was studied. Birds were caught in mist nets from June to September and droppings were collected after defecation. Prevalence of infection was high - 80% of Chaffinches excreted oocysts of Isospora sp. Intensity of oocysts' production varied depending on the time of the day and therefore coccidia prevalence in Chaffinch should be best detectable in birds caught after midday.
8

Parasites and pathogenes in population of Chaffinch Fringilla coelebs from Masurian Lakeland, NE Poland

45%
Gryczynska A., Dolnik O., Pawelczyk A., Mazgajski T. D., Siemiatkowski M.
Acta Ornithologica
|
2000
|
tom 35
|
nr 1
79-83
The aim of the study was to contribute the knowledge about the coincidence and species selectivity of bird parasites. The subject of our study were Chaffinches captured in Masurian Lake region (NE Poland) from 1996 to 1998. Each bird caught was visually examined for the presence of ticks. Birds' droppings and small volumes of birds' blood were collected in order to ascertain the presence of coccidia and blood parasites. Additionally the presence of bacteria Borrelia burgdorferi — the causative agent of Lyme borreliosis in birds' blood was measured with the nested-polymerase chain reaction method. In total amount of 225 Chaffinches were captured. 44% of them were infested by ticks belonging to Ixodes ricinus species (larvae and nymphs) only. Coccidia from genus Isospora were found in 80% (n = 35) of birds. Protozoans from genus Haemoproteus were ascertained in 53% (n = 59) of Chaffinches and bacteria B. burgdorferi was found in 12.7% (n = 166) of the birds. Three groups of parasites (I. ricinus, Isospora sp., Haemoproteus sp.) were found together in 26% (n = 38) of Chaffinches whereas only 5% of the birds had no parasite infection.
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