Google Play icon

Deadly Diseases Could Strike Bighorn Sheep

Share
Posted August 29, 2013

Declining bighorn sheep populations may be vulnerable to some of the fatal diseases, including chronic wasting disease (CWD), that are found in their western U.S. habitats, according to a new U.S. Geological Survey study.

USGS National Wildlife Health Center (NWHC) research showed that bighorn sheep are likely susceptible to the deadly neurological diseases scrapie and CWD, which are occurring in or near natural bighorn sheep environments. These fatal diseases are caused by mysterious proteins called prions, and are known to infect domestic sheep (scrapie) and non-domestic deer, elk, and moose (CWD). The USGS study is published in the journal BMC Veterinary Research, and is available online.

“Bighorn sheep are economically and culturally important to the western U.S.,” said Dr. Christopher Johnson, USGS scientist and senior author of the report. “Understanding future risks to the health of bighorn sheep is key to proper management of the species.”

USGS laboratory tests found evidence that bighorn sheep could be vulnerable to CWD from either white-tailed deer or elk, and to a domestic sheep prion disease known as scrapie. However, none of a small number of bighorn sheep sampled in the study showed evidence of infection.

“Our results do not mean that bighorns get, or will eventually get, prion diseases,” Johnson said. “However, wildlife species like bighorn sheep are increasingly exposed to areas where CWD occurs as the disease expands to new geographical areas and increases in prevalence.”

The laboratory test results could be useful to wildlife managers because bighorn sheep habitats overlap with farms and ranches with scrapie-infected sheep and regions where CWD is common in deer, elk, and moose.

Bighorn sheep populations in western North America have declined from habitat loss and, more recently, epidemics of fatal pneumonia thought to be transmitted to them from domestic sheep. Prion diseases are another possible threat to this valuable species.

Source: USGS

Featured news from related categories:



Technology Org App
Google Play icon
84,692 science & technology articles

Most Popular Articles

  1. Oumuamua 2.0? It Looks Like There is a New Interstellar Object Passing Through the Solar System (September 13, 2019)
  2. Real Artificial Gravity for SpaceX Starship (September 17, 2019)
  3. Top NASA Manager Says the 2024 Moon Landing by Astronauts might not Happen (September 19, 2019)
  4. How social media altered the good parenting ideal (September 4, 2019)
  5. What's the difference between offensive and defensive hand grenades? (September 26, 2019)

Follow us

Facebook   Twitter   Pinterest   Tumblr   RSS   Newsletter via Email