Parasites and Diseases of Bison in Canada Iv. Serologic Survey for Brucellosis in Bison in Northern Canada.

Choquette, L. P. E.; Broughton, Eric; Cousineau, Julien; Novakowski, N. S.

doi:10.7589/0090-3558-14.3.329

Cited by 12 publications

(3 citation statements)

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“…The prevalence of these pathogens in bison in WBNP has not been evaluated in a systematic manner. Previously, prevalence levels were determined during bison slaughter operations (Choquette et al . 1961, 1978; Fuller 1962) or on opportunistically sampled bison (Tessaro et al .…”

Section: Introductionmentioning

confidence: 99%

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Factors affecting apparent prevalence of tuberculosis and brucellosis in wood bison

Joly

Messier

2004

Journal of Animal Ecology

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Summary Bison (Bison bison) abundance in Wood Buffalo National Park, Canada, declined from in excess of 10 000 bison in the late 1960s to a low of 2200 bison in the late 1990s. Bovine tuberculosis (Mycobacterium bovis) and brucellosis (Brucella abortus), were introduced to Wood Buffalo National Park in the late 1920s. As each of these pathogens have the potential to reduce survival and reproduction in bison, they are suspected to have played a role in the decline in bison abundance. We live‐captured bison for disease testing in February and March of 1997, 1998 and 1999. Forty‐nine percent tested positive for tuberculosis (i.e. were positive on the caudal fold test and/or fluorescent polarization assay, n = 342). Further, 30·9% of bison were seropositive for brucellosis (i.e. agglutinated in the buffered‐plate antigen test and had a titre of 1 : 5 in the complement fixation test or had a titre of ≥ 1 : 10 in the complement fixation test, n = 346). Prevalence for both diseases increased with age and males were more likely to test positive for tuberculosis. Prevalence of either disease did not appear to be directly related to density of bison, as prevalence rates were not greater in the high density Delta population than the lower density Hay Camp and Nyarling River populations. Comparison of our results to previous brucellosis and tuberculosis surveys in Wood Buffalo National Park indicates that prevalence of neither pathogen is a direct function of bison density. These pathogens are endemic within the bison population of the park.

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Section: Introductionmentioning

confidence: 99%

“…Previously, prevalence levels were determined during bison slaughter operations (Choquette et al . 1961(Choquette et al . , 1978Fuller 1962) or on opportunistically sampled bison (Tessaro et 1990).…”

Section: Introductionmentioning

confidence: 99%

Factors affecting apparent prevalence of tuberculosis and brucellosis in wood bison

Joly

Messier

2004

Journal of Animal Ecology

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“…antibodies on specimens from two cows that had recently aborted (Mohler, 1917). Subsequently, the disease was found in bison from the National Bison Range in Moiese (Montana, USA) (Creech, 1930), Elk Island National Park (Alberta, Canada) (Corner and Connell, 1958), Wood Buffalo National Park (Canada) (Choquette et al, 1978), Teton County (Wyoming, USA) (Williams et al, 1993), and private herds in the USA (Flagg, 1983;Rhyan et al, 1997b). Abortions or retained placentas in bison from brucellosis infected herds have been reported (Creech, 1930;Corner and Connell, 1958), and have been observed in experimental infections (Davis et al, 1990(Davis et al, , 1991; however, only two naturally-occurring abortions with laboratory confirmation of B. abortus as the causative agent have been reported (Williams et al, 1993;Rhyan et al, 1994).…”

Section: Evidence Of Brucellosis In Bison Frommentioning

confidence: 99%

Pathology of Brucellosis in Bison From Yellowstone National Park

Rhyan

Gidlewski

Roffe

et al. 2001

Journal of Wildlife Diseases

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Between February 1995 and June 1999, specimens from seven aborted bison (Bison bison) fetuses or stillborn calves and their placentas, two additional placentas, three dead neonates, one 2-wk-old calf, and 35 juvenile and adult female bison from Yellowstone National Park (USA) were submitted for bacteriologic and histopathologic examination. One adult animal with a retained placenta had recently aborted. Serum samples from the 35 juvenile and adult bison were tested for Brucella spp. antibodies. Twenty-six bison, including the cow with the retained placenta, were seropositive, one was suspect, and eight were seronegative. Brucella abortus biovar 1 was isolated from three aborted fetuses and associated placentas, an additional placenta, the 2-wk-old calf, and 11 of the seropositive female bison including the animal that had recently aborted. Brucella abortus biovar 2 was isolated from one additional seropositive adult female bison. Brucella abortus was recovered from numerous tissue sites from the aborted fetuses, placentas and 2-wk-old calf. In the juvenile and adult bison, the organism was more frequently isolated from supramammary (83%), retropharyngeal (67%), and iliac (58%) lymph nodes than from other tissues cultured. Cultures from the seronegative and suspect bison were negative for B. abortus. Lesions in the B. abortus-infected, aborted placentas and fetuses consisted of necropurulent placentitis and mild bronchointerstitial pneumonia. The infected 2-wk-old calf had bronchointerstitial pneumonia, focal splenic infarction, and purulent nephritis. The recently-aborting bison cow had purulent endometritis and necropurulent placentitis. Immunohistochemical staining of tissues from the culture-positive aborted fetuses, placentas, 2-wk-old calf, and recently-aborting cow disclosed large numbers of B. abortus in placental trophoblasts and exudate, and fetal and calf lung. A similar study with the same tissue collection and culture protocol was done using six seropositive cattle from a B. abortus-infected herd in July and August, 1997. Results of the bison and cattle studies were similar.

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