Swine Invasion - Canada
The population of hybrid wild pigs has exploded across several Canadian provinces during the past 30 years, posing threats to native species, agriculture, livestock and even traffic.
A new study by the University of Saskatchewan tracks the spread of the porcine pests, which are a cross between domestic pigs and wild boar that were imported from Europe in the late 1980s to diversify Canadian livestock. Others were imported for sport hunting.
The hybrids that escaped into the wild have rapidly multiplied as the most prolific invasive mammal species in Canada.
They are currently concentrated in the Canadian prairies, but other clusters have become established in British Columbia, Ontario and Quebec.
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