Saving Bison, Losing Tigers

Wildlife conservation approaches to anthrax and poaching have divergent results.

Jack Woodall
Nov 1, 2006

As every reader of this magazine knows since the anthrax-by-mail episode in October 2001, anthrax is caused by a bacterium, Bacillus anthracis, which can infect the skin, gut, or lungs and produce a toxin that is rapidly fatal; vaccination or antibiotics can prevent this infection. Scientists also know that B. anthracis is an ubiquitous soil organism that affects livestock all over the world, with the exception of small island countries, those on the east coast of Arabia, and for some reason, Sweden. It causes sporadic deaths in cattle, sheep, horses, and goats, which ingest a certain amount of soil with the grass they pull up to eat.

Anthrax also kills wild herbivores, such as bison (also known as wood buffalo) in Canada's last remaining wild herd. During the past summer, in Canada's remote Wood Buffalo National Park, a number of bison died of the infection. Their carcasses were spotted...

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