By Dave Branco

Parasite in black bears

Parasite threatens black bear cubs, puzzling scientists 16 years after initial discovery

Feb 8, 2024 | 3:15 PM

PRINCE GEORGE – A parasite first discovered 16 years ago in a black bear has some scientists puzzled as they grapple with the discovery of Sarcocystis spp. infection in black bears. They say that a parasite is now killing some cubs. Scientists are concerned about the possible effect the parasite will have on bear populations.

Since 2008, the death of a captive black bear has researchers investigating the spread of the parasite that’s killing some young animals.

Biologists have noticed bear growth and behaviour change since the first positive case.

“We noticed large numbers of quite stunted cubs, so they were really small for where they should be for the time of year. They tended to be on their own. They tended to be orphaned.”

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Dr. Glenna McGregorVeterinary

Pathologist, Ministry of Agriculture

There was evidence of microscopic infections in some dead bears.

Research has concluded that the parasite has not crossed into the human population.

“As far as we know, there’s no risk to human health at this time. Humans can get their own species of Sarcocystis. But as far as we know, this species of Sarcocystis in bears is ineffective to humans”

Dr. Glenna McGregorVeterinary

Pathologist, Ministry of Agriculture

Scientists say further research is needed to fully comprehend the potential hazards that these infections present to bears. If you notice a deceased bear or one acting abnormally, it would help scientists if you could report it to the RAPP line. By doing so, they can better understand the overall health of the bear population.

Email: Dave.Branco@pattisonmedia.com

TikTok: @DaveBrancoVJ