Factors affecting the component community structure of haemoparasites in bank voles (<i>Clethrionomys glareolus</i>) from the Mazury Lake District region of Poland

Bajer, Anna; Pawełczyk, Agnieszka; Behnke, Jerzy M.; Gilbert, Francis; Siński, E.

doi:10.1017/s0031182000007058

Cited by 70 publications

(92 citation statements)

References 16 publications

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“…2% in C. glareolus and only 2 . 2 % in the wood mouse Apodemus sylavaticus ; Bajer et al (2001) found an average prevalence of 15 % in C. glareolus over 3 years ; and Pawelczyk et al (2004) reported prevalence levels ranging from 20 % to less than 10 % in M. arvalis over 4 years. However, the differences between these and the present results may largely be due to differences in diagnostic methods.…”

Section: Discussionmentioning

confidence: 95%

Trypanosomes, fleas and field voles: ecological dynamics of a host-vector–parasite interaction

et al. 2005

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To investigate the prevalence of a flea-borne protozoan (Trypanosoma (Herpetosoma) microti) in its field vole (Microtus agrestis) host, we monitored over a 2-year period a range of intrinsic and extrinsic parameters pertaining to host demographics, infection status and vector (flea) prevalence. Generalized Linear Mixed Modelling was used to analyse patterns of both flea and trypanosome occurrence. Overall, males of all sizes and ages were more likely to be infested with fleas than their female counterparts. Flea prevalence also showed direct density dependence during the winter, but patterns of density dependence varied amongst body mass (age) classes during the summer. Trypanosome prevalence did not vary between the sexes but was positively related to past flea prevalence with a lag of 3 months, with the highest levels occurring during the autumn season. A convex age-prevalence distribution was observed, suggesting that individuals develop a degree of immunity to trypanosome infection with age and exposure. An interaction between age and whether the individual was new or recaptured suggested that infected animals are less likely to become territory holders than their uninfected counterparts.

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Section: Discussionmentioning

confidence: 95%

Trypanosomes, fleas and field voles: ecological dynamics of a host-vector–parasite interaction

et al. 2005

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“…increase when the population density is high and fall when it is low (Lewis, 1968 ;Montgomery and Montgomery, 1988 ;Haukisalmi and Henttonen, 1990), and the substantial drop in the prevalence of S. petrusewiczi between 1999 (when vole densities were very high ; 18 . 8/1000 trap hours at Urwitałt, see Bajer et al 2001) and 2002 (when they were lower at 8 . 6, 8 .…”

Section: Journalscambridgeorgmentioning

confidence: 95%

Temporal and between-site variation in helminth communities of bank voles (Myodes glareolus) from N.E. Poland. 1. Regional fauna and component community levels

et al. 2008

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SUMMARYHelminth infections were studied in bank voles (Myodes glareolus) from 3 woodland sites in N.E. Poland in the late summers of 1999 and 2002, to assess the temporal stability of derived statistics describing the regional helminth fauna and component community structure, and spatial influence on the latter. Regional helminth fauna changed dramatically between the two years, primarily due to a fall in the abundance ofSyphacia petrusewiczibut was partially compensated for by an increase inMesocestoides lineatusandCladotaenia globifera. It was dominated by nematodes overall, but more so in 1999 than in 2002 when larval cestodes were more frequent. Most derived parameters for component community structure varied considerably between sites and the two surveys, the hierarchical order for sites not being maintained between surveys. They were susceptible to the disproportionate influence of three relatively rare, unpredictable species with the greatest overall aggregated distribution among hosts. Jaccard's similarity index was less influenced by the rare species, showing greater stability between sites and across years. In conclusion, temporal variation confounded any site-specific characteristics of the summary measures quantified in this study and their usefulness is therefore restricted to the years in which the surveys were conducted.

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“…The parasites in 100 fields of vision (approx. 100,000 red blood cells) were counted as described previously (Bajer et al 2001;Kloch et al 2010).…”

Section: Parasite Screeningmentioning

confidence: 99%

“…Norrdahl and Korpimäki 2005;Borkowska et al 2009) and parasitological (e.g. Bajer et al 2001;Burthe et al 2008) studies, they were also subject of several studies of MHC polymorphism in the wild (e.g. Oliver et al 2009;Kloch et al 2010).…”

Section: Introductionmentioning

confidence: 99%

MHC influences infection with parasites and winter survival in the root vole Microtus oeconomus

et al. 2012

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Selective pressure from parasites is thought to maintain the polymorphism of major histocompatibility complex (MHC) genes. Although a number of studies have shown a relationship between the MHC and parasitic infections, the fitness consequences of such associations are less well documented. In the present paper, we characterised the variation in exon 2 of MHC class II DRB gene in the root vole and examined the effects of that gene on parasite prevalence and winter survival. We identified 18 unique exon 2 sequences, which translated into 10 unique amino acid sequences. Phylogenetic analysis revealed the presence of three distinct clusters, and allele distributions among these individuals suggested that the clusters correspond to three different loci. Although the rate of synonymous substitutions (d S ) exceeded the rate of nonsynonymous substitutions (d N ) across sequences, implying purifying selection, d N was significantly elevated at antigen-binding sites, suggesting that these sites could be under positive selection. Screening for parasites revealed a moderate prevalence of infection with gastrointestinal parasites (24 % infected), but a high infection rate for blood parasites (56 % infected). Infection with the blood parasite Babesia ssp. decreased survival almost twofold (25.7 vs. 13.9 %). Animals possessing the amino acid sequence AA*08 survived better than others (44.9 vs. 22 %), and they were infected with Babesia ssp. less often (13.9 vs 25.7 %). In contrast, individuals carrying allele AA*05 were infected more often (31.7 vs. 15.3 %). Heterozygosity at one of the putative loci was associated with a lower probability of infection with Babesia ssp., but at the other locus, the association was reversed. The unexpected latter result could be at least partly explained by the increased frequency of the susceptible allele AA*05 among heterozygotes. Overall, we demonstrate that infection with Babesia ssp. is a strong predictor of Electronic supplementary material The online version of this article

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Factors affecting the component community structure of haemoparasites in bank voles (Clethrionomys glareolus) from the Mazury Lake District region of Poland

Cited by 70 publications

References 16 publications

Trypanosomes, fleas and field voles: ecological dynamics of a host-vector–parasite interaction

Trypanosomes, fleas and field voles: ecological dynamics of a host-vector–parasite interaction

Temporal and between-site variation in helminth communities of bank voles (Myodes glareolus) from N.E. Poland. 1. Regional fauna and component community levels

MHC influences infection with parasites and winter survival in the root vole Microtus oeconomus

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