Seasonal and annual variations in the prevalence of blood parasites in cyclic species of small rodents in Norway with special reference to Clethrionomys glareolus

Wiger, Richard

doi:10.1111/j.1600-0587.1979.tb00697.x

Cited by 21 publications

(26 citation statements)

References 12 publications

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“…Our results are in accordance to data from former Czechoslovakia, Austria and Great Britain (Šebek 1975, Šebek et al 1980, Frank 1978, Healing 1981, Turner 1986), but higher than from Norway (0-16.7% in summer -Wiger 1979). However, the infection with Herpetosoma trypanosomes depends on season (Turner 1986, Karbowiak andWita 2001).…”

Section: Discussionsupporting

confidence: 91%

“…The prevalence of T. microti was higher in root vole from Białowieża Forest (21.4-50.0%) than those noted for field vole (0.9-12.8% - Baker et al 1963, Šebek 1975, Healing 1981 and common vole Microtus arvalis (9.0% - Pawelczyk et al 2004). However, some authors showed the between-year variability in prevalence of this parasite (Wiger 1979, Pawelczyk et al 2004.…”

Section: Discussionmentioning

confidence: 86%

“…The prevalence of B. microti in field vole ranged from 13.5 to 30.5% in temperate forest zone (Baker et al 1963, Cox 1970, Krampitz and Bäumler 1978, Šebek et al 1980, Healing 1981, was 14.6% in boreal zone of Europe (Wiger 1979), and 6 amounted only 9.0% in common vole from Mazurian Lakeland, northern Poland (Pawelczyk et al 2004). Simultaneously, these authors, as well as Bajer et al (2001) noted the low prevalence or lack of B. microti infection in other co-existing small mammals.…”

Section: Discussionmentioning

confidence: 90%

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Natural infections of small mammals with blood parasites on the borderland of boreal and temperate forest zones

Karbowiak

Rychlik

Nowakowski³

et al. 2005

Acta Theriol

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N. anomalus. The prevalence and diversity of blood parasites were lower in shrews than small rodents. Totally, 52.0% of bank voles, 50.0% of root voles, 32.5% of common shrews, and 41.2% of Eurasian water shrews were infected with any of the blood parasites. Mixed infections were seldom observed in bank vole (17.3% of investigated individuals) and root vole (14.7%). No animals were infected with three or four parasites simultaneously. Infection of Białowieża small mammals with haemoparasites seemed to be similar to those described in other temperate forest regions rather than boreal ones. Infection rates of rodent species seem to be higher in their typical habitats: for bank vole it was the highest in mixed forest, whereas for root vole in sedge swamp. The results suggest that Microtidae play a greater role than 1956, Lachmajer 1959, Wegner 1959 and helmints (Kisielewska 1963(Kisielewska , 1964(Kisielewska , 1970. The first study of blood parasites were made in mid-1990s only (Karbowiak et al. 2002). Blood parasites of shrews have not been reported from Poland before; however, there are reports from elsewhere (eg Laakkonen 2000).Białowieża Forest is one of the last primeval forest complexes in western and middle Europe. Moreover, it is an especially interesting place for biological investigations due to the geographical location on the borderland of the boreal and temperate forest zones. This fact results in the mix of fauna and flora from both zones (Faliński 1968, Gutowski and Jaroszewicz 2001. For example, among small mammals, masked shrew Sorex caecutiens -a boreal species -reaches its south-western limit in this area, whereas for Mediterranean water shrew Neomys anomalus and bi-coloured white-toothed shrew Crocidura leucodon, Białowieża Forest is the north-eastern boundary (Pucek 1981, MitchellJones et al. 1999. The same can be expected for ecto-and endoparasites of small mammals.A typical taiga tick, Ixodes persulcatus, has its western limit in Belarussia and Lithuania, however single findings were noted in Białowieża (Siuda 1993). Therefore, we expected the differences in the structure or biological features of blood parasite fauna in comparison with other parts of Europe.The aims of this study were: (1) To describe the protozoan parasites living in the blood of small rodents and shrews. A mixture of parasitological faunas typical for boreal and temperate forest zones was expected. (2) To compare prevalence and diversity of blood parasites in shrews and rodents. Higher prevalence and diversity were predicted in rodents because they are more social than shrews (Eisenberg 1966, Crook et al. 1976, Rychlik 1998, so more frequent parasite exchange should occur in rodents. (3) To investigate parasite 3 infection levels in different habitats. A higher prevalence was expected in habitats optimal for given species, due to higher densities of conspecifics and thus a higher risk of parasite transmission. Material and methodsOne-week trapping sessions of small rodents and shrews were conducted in four areas: Captu...

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Section: Discussionsupporting

confidence: 91%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 90%

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Natural infections of small mammals with blood parasites on the borderland of boreal and temperate forest zones

Karbowiak

Rychlik

Nowakowski³

et al. 2005

Acta Theriol

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“…Seasonal (Wiger 1979, Turner 1986) and annual (Healing 1981) differences in the occurrence of blood forms of Hepatozoon have previously been reported from rodents in northern and Central Europe. In the present study, lung meronts were common in C. glareolus in all seasons (Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…There are only a few reports of Hepatozoon infections in small mammals from northern Europe (Tadros, cited in Killick-Kendrick 1974, Wiger 1979, Soveri et al 2000. In this paper we report prevalence and distribution data of Hepatozoon infections of small rodents from Finland and some other areas in northern Europe.…”

mentioning

confidence: 99%

Haemogregarines of the genus Hepatozoon (Apicomplexa: Adeleina) in rodents from northern Europe

Laakkonen

Sukura²,

Oksanen³

et al. 2001

FOLIA PARASIT

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Abstract. We studied the prevalence and distribution of Hepatozoon infections in small rodents from Finland and other areas in northern Europe. Hepatozoon infections were more common in voles (Arvicolinae) than mice (Murinae) and more prevalent in voles of the genus Clethrionomys than in voles of the genus Microtus. Transmission electron microscopical examination of Hepatozoon erhardovae Krampitz, 1964 from bank voles Clethrionomys glareolus (Schreber) showed that intracellular lung meronts were located in alveolar septa. Meronts consisted of varying numbers of merozoites packed with amylopectin vacuoles inside electron-lucent parasitophorous vacuole. The size of the meronts was approximately 19 × 14 µm. Monozoic or dizoic cysts were frequent findings in the lung alveoles; the size of cysts was approximately 10 × 6 µm. Gametocytes were found inside eosinophilic granulocytes in the capillaries of lung tissue. Ultrastructurally, micronemes, microtubules, mitochondria, nuclei and lipid droplets were visible.

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Long-Term Spatiotemporal Stability and Dynamic Changes in the Haemoparasite Community of Bank Voles (Myodes glareolus) in NE Poland

et al. 2014

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Long-term field studies on parasite communities are rare but provide a powerful insight into the ecological and evolutionary processes shaping host–parasite interactions. The aim of our study was to identify the principal factors regulating long-term trends in the haemoparasite communities of bank voles, and to this end, we sampled three semi-isolated populations of bank voles (n = 880) in 1999, 2002, 2006 and 2010 in the Mazury lake district region of NE Poland. Overall, 90.8 % of the bank voles harboured at least one of the species of haemoparasites studied. Whilst overall prevalence (all species combined) did not vary significantly between the surveys, different temporal changes were detected among voles in each of the three sites. In voles from Urwitałt, prevalence increased consistently with successive surveys, whereas in Tałty, the peak years were 2002 and 2006, and in Pilchy, prevalence oscillated without a clear pattern. Across the study, bank voles harboured a mean of 1.75 ± 0.034 haemoparasite species, and species richness remained stable with no significant between-year fluctuations or trends. However, each of the five constituent species/genera showed a different pattern of spatio-temporal changes. The overall prevalence of Babesia microti was 4.9 %, but this varied significantly between years peaking in 2006 and declining again by 2010. For Bartonella spp., overall prevalence was 38.7 %, and this varied with year of study, but the temporal pattern of changes differed among the three sites. The overall prevalence of Haemobartonella (Mycoplasma) was 68.3 % with an increase in prevalence with year of study in all three sites. Hepatozoon erhardovae had an overall prevalence of 46.8 % but showed a marked reduction with each successive year of the study, and this was consistent in all three sites. The overall prevalence of Trypanosoma evotomys was 15.4 % varying significantly between sites, but showing temporal stability. While overall prevalence of all haemoparasites combined and species richness remained stable over the period of study, among the five haemoparasites, the pattern of spatiotemporal changes in prevalence and abundance of infections differed depending on parasite species. For some genera, host age was shown to play an important role, but a significant effect of host sex was found only for Haemobartonella spp.

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Seasonal and annual variations in the prevalence of blood parasites in cyclic species of small rodents in Norway with special reference to Clethrionomys glareolus

Cited by 21 publications

References 12 publications

Natural infections of small mammals with blood parasites on the borderland of boreal and temperate forest zones

Natural infections of small mammals with blood parasites on the borderland of boreal and temperate forest zones

Haemogregarines of the genus Hepatozoon (Apicomplexa: Adeleina) in rodents from northern Europe

Long-Term Spatiotemporal Stability and Dynamic Changes in the Haemoparasite Community of Bank Voles (Myodes glareolus) in NE Poland

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