Sharing of <i>Pasteurella</i> spp. Between Free-ranging Bighorn Sheep and Feral Goats

Rudolph, Karen; Hunter, David; Foreyt, William J.; Cassirer, E. Frances; Rimler, R. B.; Ward, A. C. S.

doi:10.7589/0090-3558-39.4.897

Cited by 26 publications

(17 citation statements)

References 19 publications

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“…Mannheimia haemolytica, Pasteurella multocida, and Bibersteinia (formerly Pasteurella ) trehalosi have been isolated from pneumonic and healthy bighorn sheep over much of their range, although experimental work over the past half century has largely focused on M. haemolytica from presumptive domestic sheep reservoirs [14, 128, 173, 212, 213] (Table 3). Evidence consistent with domestic sheep Pasteurellaceae acting as a primary pathogens of bighorn includes isolation of Pasteurellaceae from pneumonic bighorn sheep during outbreaks, outbreaks in free-ranging and captive bighorn sheep following “contact” with domestic sheep and goats, pneumonia in bighorn sheep caused by experimental inoculations of isolates native to domestic sheep, in vitro evidence of a cellular basis for bighorn sheep's particular sensitivity to disease from M. haemolytica , and experimental evidence for transmission from domestic sheep causing disease in bighorns [15, 19, 151, 214–216]. However, it has not yet been demonstrated that any Pasteurellaceae are found more often in animals with disease than in healthy animals.…”

Section: Determinants Limiting Free-ranging Bighorn Sheep Populationsmentioning

confidence: 99%

A Review of Hypothesized Determinants Associated with Bighorn Sheep (Ovis canadensis) Die-Offs

Miller

Hoberg

Weiser

et al. 2012

Veterinary Medicine International

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Multiple determinants have been hypothesized to cause or favor disease outbreaks among free-ranging bighorn sheep (Ovis canadensis) populations. This paper considered direct and indirect causes of mortality, as well as potential interactions among proposed environmental, host, and agent determinants of disease. A clear, invariant relationship between a single agent and field outbreaks has not yet been documented, in part due to methodological limitations and practical challenges associated with developing rigorous study designs. Therefore, although there is a need to develop predictive models for outbreaks and validated mitigation strategies, uncertainty remains as to whether outbreaks are due to endemic or recently introduced agents. Consequently, absence of established and universal explanations for outbreaks contributes to conflict among wildlife and livestock stakeholders over land use and management practices. This example illustrates the challenge of developing comprehensive models for understanding and managing wildlife diseases in complex biological and sociological environments.

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Section: Determinants Limiting Free-ranging Bighorn Sheep Populationsmentioning

confidence: 99%

A Review of Hypothesized Determinants Associated with Bighorn Sheep (Ovis canadensis) Die-Offs

Miller

Hoberg

Weiser

et al. 2012

Veterinary Medicine International

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“…Species within these genera differ in virulence, and the specific types involved with bighorn sheep pneumonia include Mannheimia haemolytica (formerly Pasteurella haemolytica serotype 2) (9), Pasteurella trehalosi serotype 10 (18), and Pasteurella multocida subsp. multocida (26,27,31).…”

mentioning

confidence: 99%

Association of Mycoplasma ovipneumoniae Infection with Population-Limiting Respiratory Disease in Free-Ranging Rocky Mountain Bighorn Sheep ( Ovis canadensis canadensis )

et al. 2008

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Bronchopneumonia is a population-limiting disease in bighorn sheep in much of western North America. Previous investigators have isolated diverse bacteria from the lungs of affected sheep, but no single bacterial species is consistently present, even within single epizootics. We obtained high-quality diagnostic specimens from nine pneumonic bighorn sheep in three populations and analyzed the bacterial populations present in bronchoalveolar lavage specimens of seven by using a culture-independent method (16S rRNA gene amplification and clone library analyses). Mycoplasma ovipneumoniae was detected as a predominant member of the pneumonic lung flora in lambs with early lesions of bronchopneumonia. Specific PCR tests then revealed the consistent presence of M. ovipneumoniae in the lungs of pneumonic bighorn sheep in this study, and M. ovipneumoniae was isolated from lung specimens of five of the animals. Retrospective application of M. ovipneumoniae PCR to DNA extracted from archived formalin-fixed, paraffin-embedded lung tissues of historical adult bighorn sheep necropsy specimens supported the association of this agent with bronchopneumonia (16/34 pneumonic versus 0/17 nonpneumonic sheep were PCR positive [P < 0.001]). Similarly, a very strong association was observed between the presence of one or more M. ovipneumoniae antibody-positive animals and the occurrence of current or recent historical bronchopneumonia problems (seropositive animals detected in 9/9 versus 0/9 pneumonic and nonpneumonic populations, respectively [P < 0.001]). M. ovipneumoniae is strongly associated with bronchopneumonia in free-ranging bighorn sheep and is a candidate primary etiologic agent for this disease.

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“…Numerous published reports and circumstantial evidence suggest that contact with domestic sheep may lead to pneumonia in BHS [31, 32, 33, 34, 35, 36]. Under experimental conditions contact between domestic goats and BHS does not appear to be as problematic as contact with domestic sheep [14] but co-pasturing of domestic goats and BHS has resulted in pneumonia and death in BHS [16].…”

Section: Discussionmentioning

confidence: 99%

“…Under experimental conditions contact between domestic goats and BHS does not appear to be as problematic as contact with domestic sheep [14] but co-pasturing of domestic goats and BHS has resulted in pneumonia and death in BHS [16]. Contact between BHS and domestic goats under field conditions has been documented [10, 36, 37]. Infectious keratoconjuntivitis (pink eye) has been transmitted from domestic goats to BHS under range conditions [37] and Mannheimia spp.…”

Section: Discussionmentioning

confidence: 99%

Potential disease agents in domestic goats and relevance to bighorn sheep (Ovis canadensis) management

Drew

Weiser

2017

PLoS ONE

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Domestic goats are raised for meat, milk and hair production, in herds for rangeland weed control, and as pack animals. Domestic sheep, goats and wild bighorn sheep are all susceptible to a multifactorial pneumonia. We sampled 43 herd goats from 7 herds and 48 pack goats from 11 herds for viral and bacterial serology, parasitology, and Pasteurellaceae microbiology. The goats in this study were in generally good health, although most goats did harbor various pathogens and parasites including several bacteria, specifically Pasteurellaceae, which have been associated with pneumonia in free-ranging bighorn sheep. It is not known if domestic goats can transmit the Pasteurellaceae or other pathogens found in this study readily to wild bighorn sheep. However, due the possibility of transmission, domestic goats in areas in or near bighorn sheep habitat should be managed to minimize the risk of spreading disease agents to bighorn sheep.

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Sharing of Pasteurella spp. Between Free-ranging Bighorn Sheep and Feral Goats

Cited by 26 publications

References 19 publications

A Review of Hypothesized Determinants Associated with Bighorn Sheep (Ovis canadensis) Die-Offs

A Review of Hypothesized Determinants Associated with Bighorn Sheep (Ovis canadensis) Die-Offs

Association of Mycoplasma ovipneumoniae Infection with Population-Limiting Respiratory Disease in Free-Ranging Rocky Mountain Bighorn Sheep ( Ovis canadensis canadensis )

Potential disease agents in domestic goats and relevance to bighorn sheep (Ovis canadensis) management

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