DISTRIBUTION AND SEASONAL VARIATION OF LJUNGAN VIRUS IN BANK VOLES (MYODES GLAREOLUS) IN FENNOSCANDIA

2017 ◽  
Vol 53 (3) ◽  
pp. 552 ◽  
Author(s):  
Cristina Fevola ◽  
Chiara Rossi ◽  
Roberto Rosà ◽  
Åke Nordström ◽  
Frauke Ecke ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Myodes Glareolus ◽  
Bank Voles ◽  
Ljungan Virus

Genome characterisation of two Ljungan virus isolates from wild bank voles ( Myodes glareolus ) in Sweden

2015 ◽  
Vol 36 ◽  
pp. 156-164 ◽  
Author(s):  
Kieran C. Pounder ◽  
Phillip C. Watts ◽  
Bo Niklasson ◽  
Eva R.K. Kallio ◽  
Denise A. Marston ◽  
...  
Keyword(s):  
Myodes Glareolus ◽  
Bank Voles ◽  
Ljungan Virus ◽  
Virus Isolates

Islet autoantibodies present in association with Ljungan virus infection in bank voles (Myodes glareolus) in northern Sweden

2016 ◽  
Vol 89 (1) ◽  
pp. 24-31 ◽  
Author(s):  
Anna Warvsten ◽  
Martin Björnfors ◽  
Michael Arvidsson ◽  
Fariba Vaziri-Sani ◽  
Ida Jönsson ◽  
...  
Keyword(s):  
Virus Infection ◽  
Islet Autoantibodies ◽  
Myodes Glareolus ◽  
Northern Sweden ◽  
Bank Voles ◽  
Ljungan Virus

scholarly journals Evolutionary Relationships of Ljungan Virus Variants Circulating in Multi-Host Systems across Europe

Viruses ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1317
Author(s):  
Chiara Rossi ◽  
Nicola Zadra ◽  
Cristina Fevola ◽  
Frauke Ecke ◽  
Birger Hörnfeldt ◽  
...  
Keyword(s):  
Small Mammals ◽  
Rna Virus ◽  
Natural Populations ◽  
Purifying Selection ◽  
Myodes Glareolus ◽  
Evolutionary Relationships ◽  
Mammal Species ◽  
Bank Voles ◽  
Ljungan Virus ◽  
Small Mammal Species

The picornavirus named ‘Ljungan virus’ (LV, species Parechovirus B) has been detected in a dozen small mammal species from across Europe, but detailed information on its genetic diversity and host specificity is lacking. Here, we analyze the evolutionary relationships of LV variants circulating in free-living mammal populations by comparing the phylogenetics of the VP1 region (encoding the capsid protein and associated with LV serotype) and the 3Dpol region (encoding the RNA polymerase) from 24 LV RNA-positive animals and a fragment of the 5′ untranslated region (UTR) sequence (used for defining strains) in sympatric small mammals. We define three new VP1 genotypes: two in bank voles (Myodes glareolus) (genotype 8 from Finland, Sweden, France, and Italy, and genotype 9 from France and Italy) and one in field voles (Microtus arvalis) (genotype 7 from Finland). There are several other indications that LV variants are host-specific, at least in parts of their range. Our results suggest that LV evolution is rapid, ongoing and affected by genetic drift, purifying selection, spillover and host evolutionary history. Although recent studies suggest that LV does not have zoonotic potential, its widespread geographical and host distribution in natural populations of well-characterized small mammals could make it useful as a model for studying RNA virus evolution and transmission.

scholarly journals Molecular characterization of a novel Ljungan virus (Parechovirus; Picornaviridae) reveals a fourth genotype and indicates ancestral recombination

2009 ◽  
Vol 90 (4) ◽  
pp. 843-853 ◽  
Author(s):  
Conny Tolf ◽  
Maria Gullberg ◽  
E. Susanne Johansson ◽  
Robert B. Tesh ◽  
Björn Andersson ◽  
...  
Keyword(s):  
Sequence Analysis ◽  
Sequence Similarity ◽  
Phylogenetic Analyses ◽  
New York State ◽  
Evolutionary Relationship ◽  
Clethrionomys Glareolus ◽  
Myodes Glareolus ◽  
Bank Voles ◽  
Ljungan Virus ◽  
New Genotype

Ljungan virus (LV) was discovered 20 years ago in Swedish bank voles (Myodes glareolus, previously referred to as Clethrionomys glareolus) during the search for an infectious agent causing lethal myocarditis in young athletes. To date, the genomes of four LV isolates, including the prototype 87-012 strain, have been characterized. Three of these LV strains were isolated from bank voles trapped in Sweden. Sequence analysis of an American virus (M1146), isolated from a montane vole (Microtus montanus) in western USA, indicates that this strain represents a genotype that is different from the Swedish strains. Here, we present genomic analyses of a fifth LV strain (64-7855) isolated from a southern red-backed vole (Myodes gapperi) trapped during arbovirus studies in New York state in the north-eastern USA in the 1960s. Sequence analysis of the 64-7855 genome showed an LV-like genome organization and sequence similarity to other LV strains. Genetic and phylogenetic analyses of the evolutionary relationship between the 64-7855 strain and other viruses within the family Picornaviridae, including previously published LV strains, demonstrated that the 64-7855 strain constitutes a new genotype within the LV species. Analyses also showed that different regions of the 64-7855 genome have different phylogenetic relationships with other LV strains, indicating that previous recombination events have been involved in the evolution of this virus.

Ljungan Virus Detected in Bank Voles (Myodes glareolus) and Yellow-Necked Mice (Apodemus flavicollis) from Northern Italy

2010 ◽  
Vol 46 (1) ◽  
pp. 262-266 ◽  
Author(s):  
Heidi C. Hauffe ◽  
Bo Niklasson ◽  
Therese Olsson ◽  
Alessandro Bianchi ◽  
Annapaola Rizzoli ◽  
...  
Keyword(s):  
Northern Italy ◽  
Myodes Glareolus ◽  
Apodemus Flavicollis ◽  
Bank Voles ◽  
Ljungan Virus

scholarly journals Serological survey in the Finnish human population implies human-to-human transmission of Ljungan virus or antigenically related viruses

2015 ◽  
Vol 144 (6) ◽  
pp. 1278-1285 ◽  
Author(s):  
A. J. JÄÄSKELÄINEN ◽  
L. VOUTILAINEN ◽  
R. LEHMUSTO ◽  
H. HENTTONEN ◽  
M. LAPPALAINEN ◽  
...  
Keyword(s):  
Geographical Distribution ◽  
Human Population ◽  
Immunofluorescence Assay ◽  
Antibody Responses ◽  
Myodes Glareolus ◽  
Zoonotic Potential ◽  
Serological Survey ◽  
Bank Voles ◽  
Ljungan Virus ◽  
Human Sera

SUMMARYLjungan virus (LV) is a picornavirus related to human parechoviruses (HPeV). The virus has been found in bank voles (Myodes glareolus) and several other rodent species, and suggested to have zoonotic potential. Thus far, seroepidemiological data on LV infections in humans are scarce. In this study, we aimed to characterize the demographic and geographical distribution of LV-reactive antibodies in Finland, and to investigate its occurrence in patients suspected of having a rodent-borne disease, nephropathia epidemica (NE) caused by Puumala hantavirus (PUUV). Using an immunofluorescence assay (LV strain 145SLG), we screened human sera (n = 1378) and found LV-reactive antibodies in 36% of samples. The probability of possessing LV-reactive antibodies peaked at age of 14 years, suggesting that most infections occur in childhood. The prevalence of LV-reactive antibodies was significantly higher in the urbanized area surrounding Helsinki than in more rural Central Finland. These findings are uncharacteristic of a rodent-borne pathogen, and therefore we consider human-to-human transmission of one or several Ljungan-like viruses as a likely cause for most of the observed antibody responses.

scholarly journals Seasonal and photoperiodic effects on lipid droplet size and lipid peroxidation in the brown adipose tissue of bank voles (Myodes glareolus)

2012 ◽  
Vol 57 (4) ◽  
pp. 289-294 ◽  
Author(s):  
Elżbieta Bonda-Ostaszewska ◽  
Tadeusz Włostowski ◽  
Alicja Krasowska ◽  
Paweł Kozłowski
Keyword(s):  
Lipid Peroxidation ◽  
Adipose Tissue ◽  
Brown Adipose Tissue ◽  
Droplet Size ◽  
Lipid Droplet ◽  
Myodes Glareolus ◽  
Bank Voles ◽  
Brown Adipose ◽  
Lipid Droplet Size

scholarly journals Seroprevalence of Toxoplasma gondii among sylvatic rodents in Poland

2021 ◽  
Author(s):  
Maciej Grzybek ◽  
Daniela Antolová ◽  
Katarzyna Tołkacz ◽  
Mohammed Alsarraf ◽  
Jolanta Behnke-Borowczyk ◽  
...  
Keyword(s):  
Toxoplasma Gondii ◽  
Rodent Species ◽  
Myodes Glareolus ◽  
Host Age ◽  
Bank Voles ◽  
Vole Species ◽  
Age And Sex

ABSTRACTToxoplasma gondii is a significant pathogen affecting humans and animals. We conducted seromonitoring for T. gondii in four sylvatic rodent species in Poland. We report an overall seroprevalence of 5.5% (3.6% for Myodes glareolus and 20% for other vole species). Seroprevalence in bank voles varied significantly between host age and sex.

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

Parasitology ◽  
2008 ◽  
Vol 135 (8) ◽  
pp. 985-997 ◽  
Author(s):  
J. M. BEHNKE ◽  
A. BAJER ◽  
P. D. HARRIS ◽  
L. NEWINGTON ◽  
E. PIDGEON ◽  
...  
Keyword(s):  
Community Structure ◽  
Temporal Stability ◽  
Similarity Index ◽  
Helminth Fauna ◽  
Myodes Glareolus ◽  
Component Community ◽  
Bank Voles ◽  
Helminth Infections ◽  
Site Variation ◽  
Jaccard's Similarity Index

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.

scholarly journals Polyandry enhances offspring survival in an infanticidal species

2009 ◽  
Vol 6 (1) ◽  
pp. 24-26 ◽  
Author(s):  
Ines Klemme ◽  
Hannu Ylönen
Keyword(s):  
Mating Systems ◽  
Multiple Mating ◽  
Empirical Test ◽  
Myodes Glareolus ◽  
Offspring Survival ◽  
Bank Voles ◽  
Female Counterstrategy ◽  
Fitness Benefits ◽  
Selection For ◽  
Genetic Fitness

The adaptive significance of polyandry is an intensely debated subject in sexual selection. For species with male infanticidal behaviour, it has been hypothesized that polyandry evolved as female counterstrategy to offspring loss: by mating with multiple males, females may conceal paternity and so prevent males from killing putative offspring. Here we present, to our knowledge, the first empirical test of this hypothesis in a combined laboratory and field study, and show that multiple mating seems to reduce the risk of infanticide in female bank voles Myodes glareolus . Our findings thus indicate that females of species with non-resource based mating systems, in which males provide nothing but sperm, but commit infanticide, can gain non-genetic fitness benefits from polyandry.

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