Blar i Institutt for natur, helse og miljø på forfatter "Rosef, Olav"
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Prevalence of Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in questing Ixodes ricinus ticks in relation to the density of wild cervids
Rosef, Olav; Paulauskas, Algimantas; Radzijevskaja, Jana (Journal article; Peer reviewed, 2009-11-27)BACKGROUND: Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum have been considered as pathogens in animals and humans. The role of wild cervids in the epidemiology is not clear. We analyzed questing Ixodes ... -
Ribotype diversity of Listeria monocytogenes isolates from two salmon processing plants in Norway
Klæboe, Halvdan; Rosef, Olav; Fortes, Esther; Wiedmann, Martin (Journal article; Peer reviewed, 2006)The purpose of this study was to use automated ribotyping procedure to track Listeria monocytogenes transmission in the cold smoked fish production chain and to characterize L. monocytogenes subtypes associated with the ... -
Sex-biased dispersal in a northern ungulate population
Haanes, Hallvard; Røed, Knut H.; Rosef, Olav (Journal article; Peer reviewed, 2011)In most mammals dispersal is male-biased and in many polygynous ungulates female philopatry and matrilineal grouping involve small-scale genetic structure. We have through sex-related differences in microsatellite allele ... -
Similarity of Campylobacter lari among human, animal, and water isolates in Norway
Rosef, Olav; Johnsen, Gro; Stølan, Aud; Klæboe, Halvdan (Journal article; Peer reviewed, 2008)A total of 49 isolates of Campylobacter lari from human, poultry, ducks, pigs, and water were genetically characterized. The species were identified by biotyping and multiplex polymerase chain reaction (PCR). Automatic ... -
The prevalence and distribution of Borrelia burgdorferi sensu lato in host seeking Ixodes ricinus ticks in Lithuania
Turčinavičienė, Jurga; Ambrasiene, Daiva; Paulauskas, Algimantas; Radzijevskaja, Jana; Rosef, Olav; Žygutienė, Milda (Journal article; Peer reviewed, 2006)A total of 1559 unfed Ixodes ricinus (L., 1758) ticks were collected from the vegetation by flagging in 18 locations of Lithuania. The ticks were tested individually for the presence of spirochetes using polymerase chain ... -
The prevalence of Anaplasma phagocytophilum in host-seeking Ixodes ricinus ticks in Norway
Rosef, Olav; Radzijevskaja, Jana; Paulauskas, Algimantas; Haslekås, Camilla (Journal article; Peer reviewed, 2008-12-24)