| energy gains predict the distribution of plains bison across populations and ecosystems. | developing tools that help predict animal distribution in the face of environmental change is central to understanding ecosystem function, but it remains a significant ecological challenge. we tested whether a single foraging currency could explain bison (bison bison) distribution in dissimilar environments: a largely forested environment in prince albert national park (saskatchewan, canada) and a prairie environment in grasslands national park (saskatchewan, canada). we blended extensive behavi ... | 2011 | 21560694 |
| a canadian bison isolate of anaplasma marginale (rickettsiales: anaplasmataceae) is not transmissible by dermacentor andersoni (acari: ixodidae), whereas ticks from two canadian d. andersoni populations are competent vectors of a u.s. strain. | anaplasma marginale theiler is a tick-borne rickettsial pathogen of cattle with a global distribution in both temperate and tropical regions. the pathogen is endemic in regions within the united states, whereas the canadian cattle population is considered to be free ofa. marginale. farmed bison, bison bison l., in central saskatchewan have been found to be infected with a. marginale; however, there is no evidence of transmission from bison to cattle. we tested a saskatchewan bison isolate of a. ... | 2006 | 17017236 |
| experimental brucella abortus infection in wolves. | four juvenile male wolves (canis lupus) each received an oral dose of 1.6-1.7 x 10(12) colony-forming units of brucella abortus biovar 1 isolated from a bison (bison bison) in wood buffalo national park (canada), and two others served as negative controls. infected wolves did not show clinical signs of disease but did develop high brucella antibody titers. small numbers of b. abortus were excreted sporadically in feces until day 50 postinoculation (pi). very small numbers of the bacterium were i ... | 2004 | 15137489 |
| risk factors for mycoplasma bovis-associated disease in farmed bison (bison bison) herds in western canada: a case-control study. | north american bison producers have been attempting to control and prevent mycoplasma bovis-associated disease without the benefit of bison-specific knowledge. the objective of this study was to determine the clinical presentation of disease associated with m. bovis infection in western canadian farmed bison, and to identify herd-level risk factors for m. bovis-associated disease. bison producers (n=49) from western canada (manitoba, saskatchewan, alberta, and british columbia) were selected for ... | 2016 | 27317324 |
| a survey to detect toxocara vitulorum and other gastrointestinal parasites in bison (bison bison) herds from manitoba and saskatchewan. | an egg count survey using environmental fecal samples obtained in spring or early summer was conducted to estimate the apparent prevalence of toxocara vitulorum in unweaned bison calves and of other intestinal parasites in adult bison on 98 farms in manitoba and saskatchewan. calf samples were pooled (maximum 5 samples per pool) by farm and positive pools were examined to determine individual t. vitulorum counts. toxocara vitulorum eggs were found on 4 farms in manitoba and none in saskatchewan. ... | 0 | 25183895 |
| an outbreak of sheep-associated malignant catarrhal fever in bison (bison bison) after exposure to sheep at a public auction sale. | an outbreak of malignant catarrhal fever (mcf) among bison sold at an auction market was studied for an 18-month period. forty-five of 163 bison submitted for sale from 8 different bison farms died on 7 other destination farms. the outbreak began on day 50 after the sale, peaked between days 60 and 70, and ended on day 220. twenty-one dead bison were confirmed to be mcf cases by clinical histories, pathology, and detection of ovine herpesvirus-2 dna in their tissues with polymerase chain reactio ... | 2005 | 15690951 |
| a survey of the fecal bacteria of bison (bison bison) for potential pathogens and antimicrobial susceptibility of bison-origin e. coli. | an observational study determined the normal fecal bacterial flora of clinically healthy bison, detected the presence of common potential zoonotic pathogens, and determined the antimicrobial susceptibility of isolated e. coli strains. ninety-six fecal samples from 10 captive herds were cultured for aerobic, anaerobic, facultative, and microaerophillic bacteria. nineteen major genera of gram-positive and 8 genera of gram-negative bacteria were identified. salmonella spp. were not detected but som ... | 2011 | 21731097 |
| foraging ecology of bison at the landscape and plant community levels: the applicability of energy maximization principles. | predictions of animal distribution and resource use require multi-scale consideration because animals can use different sets of selection criteria at different scales. we investigated whether patterns of distribution and resource use by free-ranging bison (bison bison) in prince albert national park, saskatchewan, follow rules of energy maximization that hold across multiple scales. optimality theory predicts specialization on carex atherodes and frequency-independent selection among plant speci ... | 2003 | 12647163 |
| a serologic survey of mycoplasma spp. in farmed bison ( bison bison) herds in western canada. | mycoplasma bovis is emerging as an important pathogen of farmed bison in north america and is associated with high morbidity and mortality in affected herds. we developed an in-house elisa to detect antibodies against mycoplasma spp. in bison sera. the aims of the study were to estimate the seroprevalence against mycoplasma spp. in bison herds with or without past history of m. bovis-associated disease, and to determine potential risk factors for seropositivity to mycoplasma spp. in farmed bison ... | 2017 | 28578617 |