Blar i Institutt for natur, helse og miljø på utgivelsesdato
Viser treff 101-120 av 317
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The prevalence of Anaplasma phagocytophilum in host-seeking Ixodes ricinus ticks in Norway
(Journal article; Peer reviewed, 2008-12-24) -
Infestation with Ixodes ricinus ticks on migrating passerine birds in Lithuania and Norway
(Journal article; Peer reviewed, 2009)Ticks are known to carry several pathogenic agents of human diseases. To define the role of migrating birds as host and disseminators of ticks in Lithuania and Norway we analysed immature stage of ticks feeding on different ... -
Comparison of Norwegian poultry, waterborne and clinical isolates of Campylobacter jejuni by ribotyping
(Journal article; Peer reviewed, 2009)Campylobacteriosis is the most frequently occurring food and waterborne gastroenteritis in Norway and 90% of cases are caused by Campylobacter jejuni. Campylobacteriosis is epidemiologically associated with use of ... -
Diversity of thermophilic Campylobacter isolated from the Bø River, Southeast Norway
(Journal article; Peer reviewed, 2009)Out of 125 samples we isolated 45 thermophilic Campylobacter spp. from Bø River by filtration followed by growth on selective agar plates. The species were identified by biotyping, multiplex PCR and riboprinting. C. jejuni ... -
Genetic structure in an expanding cervid population after population reduction
(Journal article; Peer reviewed, 2009)The Norwegian red deer population (Cervus elaphus) was from the mid eighteenth to the early twentieth century drastically reduced in size and distribution but has the last century expanded both demographically and spatially. ... -
Infestation of mice and voles with Ixodes ricinus ticks in Lithuania and Norway
(Journal article; Peer reviewed, 2009)A total of 693 small rodents were live-trapped in Lithuania and Norway. In Lithuania, the mice Apodemus flavicollis and A. agrarius were more frequently infested with ticks than the voles Microtus arvalis and Myodes ... -
Anaplasma in ticks feeding on migrating birds and questing ticks in Lithuania and Norway
(Journal article; Peer reviewed, 2009-04-15) -
Prevalence of Borrelia burgdorferi sensu lato and Anaplasma phagocytophilum in questing Ixodes ricinus ticks in relation to the density of wild cervids
(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 ... -
Importance of mountain height and latitude for the altitudinal distribution limits of vascular plants in Scandinavia: are the mountains high enough?
(Journal article; Peer reviewed, 2010)The main aim of the present paper was to study regional differences in the altitudinal distribution limits of vascular plants in relation to mountain height and latitudinal position. Altitudinal limits from previously ... -
Brown bears possess anal sacs and secretions may code for sex
(Journal article; Peer reviewed, 2010-09-14)Olfactory communication occurs in carnivores and many scent-mark with anal gland secretions (AGS), which contain a variety of information including sex-related cues. Currently, there is disagreement about whether bear ... -
Sex-biased dispersal in a northern ungulate population
(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 ... -
The level of claudin-7 is reduced as an early event in colorectal carcinogenesis
(Journal article; Peer reviewed, 2011-02-10)BACKGROUND: Compromised epithelial barriers are found in dysplastic tissue of the gastrointestinal tract. Claudins are transmembrane proteins important for tight junctions. Claudins regulate the paracellular transport and ... -
The importance of chemical communication studies to mammalian conservation biology: A review
(Journal article; Peer reviewed, 2011-05-14)The relevance of chemical communication to mammalian conservation is not often the focus of scientific investigation. Our review identifies and discusses ten key areas in which the study of chemical communication aids ... -
Population connectivity: dam migration mitigations and contemporary site fidelity in arctic char
(Journal article; Peer reviewed, 2011-07-14)BACKGROUND: Animal feeding and spawning migrations may be limited by physical barriers and behavioral interactions. Dam constructions (e.g. hydropower) commonly include gateways for fish migrations to sustain ecological ... -
Temperature and Precipitation Development at Svalbard 1900-2100
(Journal article; Peer reviewed, 2011-12-06)Substantial variations in temperature and precipitation have been observed since the first permanent weather station was established in the Svalbard region in 1911. Temperature and precipitation development are analysed ... -
Soil temperature variation in calciphile mountain plant communities in Southern Norway
(Journal article; Peer reviewed, 2012)Soil temperature dynamics are considered to be of great importance for alpine plant life. The aim of this study was to analyse differences in soil temperature parameters between and within exposed ridges, leesides, and ... -
Faecal spectroscopy: a practical tool to assess diet quality in an opportunistic omnivore
(Journal article; Peer reviewed, 2012)Faecal indices of dietary quality can provide useful knowledge about the general ecology of a species, but only if the measurements are accurate and the results are interpreted with caution. In this article, we evaluated ... -
Invasive North American beaver Castor canadensis in Eurasia: a review of potential consequences and a strategy for eradication
(Journal article; Peer reviewed, 2012-12)Seven North American beavers Castor canadensis (Cc) were introduced into Finland in 1937 to supplement an ongoing reintroduction of the nearly extinct Eurasian beaver C. fiber (Cf). At that time, many zoologists recognised ... -
Determinants of lifetime reproduction in female brown bears: early body mass, longevity, and hunting regulations
(Journal article; Peer reviewed, 2013)In iteroparous mammals, conditions experienced early in life may have long‐lasting effects on lifetime reproductive success. Human‐induced mortality is also an important demographic factor in many populations of large ... -
Gut retention time in captive brown bears Ursus arctos
(Journal article; Peer reviewed, 2013)Knowing animals’ gut retention time (GRT) for important food items is critical when using non-invasive studies based on faecal remains, e.g. when analysing nutritive quality of food, or relating diet or behaviour to ...