Wolves in wolves' clothing not all the same

Jun 10, 2014
Wolves in wolves' clothing not all the same
A large wolf swims across a mainland inlet in the Great Bear Rainforest. Credit: Chris Darimont

New research co-authored by University of Calgary alumna Erin Navid provides evidence that British Columbia's mainland wolves and coastal wolves are more distinct than previously believed.

The research, published today in the scientific journal BMC Ecology, affirms what Chester Starr, an elder from the Heiltsuk First Nation on BC's remote west coast, and his people have always known: 'Timber Wolves' occupy the mainland of the British Columbia coast and 'Coastal Wolves' live on the nearby islands. Starr's insight provided motivation for the study.

"What makes this study special is the fact that differentiation is not supposed to occur on such a small-scale," says Navid, who graduated from the Faculty of Environmental Design, Environmental Science Program in 2009. "Wolves are highly mobile animals, capable of crossing many types of natural barriers, including small bodies of water. We did not expect to uncover a genetic gradient in an area that is only 2,000 square kilometres and relatively permeable to wolf movement."

The authors attribute the observed genetic differentiation to the profoundly different ecological environments. Coastal islands offer wolves more marine-based foods, such as salmon and marine mammals—preferences that are passed on from generation to generation. Over time, coastal wolves bred more frequently with one another and less frequently with their deer-loving relatives on the mainland.

Navid analyzed DNA samples from wolf scats collected in the field as part of her masters' thesis in the Faculty of Environmental Design.

A coastal wolf of the islands in the Great Bear Rainforest shows off a favorite menu item. Credit: Guillaume Mazille

The discovery also emphasizes the importance of incorporating traditional ecological perspectives with empirical scientific methods. "An emerging mutual recognition is that although indigenous and scientific approaches constitute different paths to knowledge, they are rooted in the same reality and provide complementary information," says co-author Paul Paquet, an adjunct professor at the University of Calgary.

These approaches are useful in addressing today's conservation challenges and opportunities. In this particular study, efforts at landscape conservation can be informed by detailed information about the habits of animals across space.

Explore further: California delays decision on protecting gray wolf

More information: The study is available at BMC Ecology 2014, 14:11 DOI: 10.1186/1472-6785-14-11

add to favorites email to friend print save as pdf

Related Stories

Wolves would rather eat salmon

Sep 02, 2008

Although most people imagine wolves chasing deer and other hoofed animals, new research suggests that, when they can, wolves actually prefer fishing to hunting. The study, published today in the open access journal BMC Ec ...

Isle Royale wolf decline boosts moose

Apr 30, 2014

A scientific report says the wolf population of Isle Royale National Park in Lake Superior is dangerously low for the third consecutive year, while moose numbers are steadily rising.

Recommended for you

Genetically tracking farmed fish escaping into the wild

11 hours ago

European sea product consumption is on the rise. With overfishing being a threat to the natural balance of the ocean, the alternative is to turn to aquaculture, the industrial production of fish and seafood. ...

France fights back Asian hornet invader

14 hours ago

They slipped into southwest France 10 years ago in a pottery shipment from China and have since invaded more than half the country, which is fighting back with drones, poisoned rods and even chickens.

Tide turns for shark fin in China

14 hours ago

A sprawling market floor in Guangzhou was once a prime location for shark fin, one of China's most expensive delicacies. But now it lies deserted, thanks to a ban from official banquet tables and a celebrity-driven ...

Manatees could lose their endangered species status

Aug 19, 2014

About 2,500 manatees have perished in Florida over the last four years, heightening tension between conservationists and property owners as federal officials prepare to decide whether to down-list the creature to threatened ...

User comments : 0