Meet the First New Canine Found in 150 Years

Golden jackals of Africa and Eurasia are actually two distantly related species—and one is a new species of wolf, a new study shows.

Published 9 Nov 2017, 03:37 GMT
Africa's golden jackal (pictured, an animal in Tanzania's Ngorongoro Conservation Area) is actually a type of wolf.
Photograph by Jason Edwards, National Geographic Creative

Jackals, the tricksters of traditional folklore, have fooled us yet again.

The golden jackal, which lives in East Africa and Eurasia, is actually two distantly related species—and one of them is a new species of wolf, a new study says. (Also see "Wolves Identified by Unique Howls, May Help Rare Species.")

Dubbed the African golden wolf, it's the first new species of canid—a group that includes wolves, coyotes, and jackals—discovered in 150 years. Africa is also home to two other wolf species, the grey wolf and Ethiopian wolf. (Read "Africa's Last Wolves" in National Geographic magazine.)

Though golden jackals look mostly the same—the Eurasian animals are slightly smaller than the African ones, with a narrower skull and slightly weaker teeth—in-depth analysis of their DNA revealed two species that have evolved separately for millennia.

"I was very surprised," said study leader Klaus-Peter Koepfli, a biologist with the Smithsonian Conservation Biology Institute in Front Royal, Virginia.

Koepfli proposes renaming the African golden jackal the African golden wolf (Canis anthus), while retaining the original species name for the Eurasian golden jackal (C. aureus).

Sniffing Out Species

Scientists have wondered if golden jackals were more than one species for years.

In 2012, biologist Philippe Gaubert, of the University of Montpellier in France, published a paper showing that African golden jackals appeared to be a subspecies of grey wolf that's separate from the Eurasian jackal.

Gaubert used snippets of jackal mitochondrial DNA, which is passed on by mothers, for his analysis. 

Koepfli found these results interesting, and wanted to verify them using more samples from a broader geographic area and more data from across both the jackal and grey wolf genomes.

In doing so, he expected to replicate Gaubert's earlier work—but that's not what happened.

By examining 38 different genetic markers of 128 canid specimens—including golden jackals from Kenya, North Africa, and Eurasia; African grey wolves; and domestic dogs—Koepfli confirmed that African and Eurasian golden jackals are two separate species. Yet he also discovered that the African golden jackal is not a grey wolf subspecies.

Instead, he discovered the African golden jackal is a new wolf species of its own, and that this species and the Eurasian golden jackal are distant cousins, having last shared an ancestor about a million years ago. The research appeared July 30 in the journal Current Biology.

"Airtight Case"

Gaubert stands by his original work, saying that although he finds the new study to be high-quality work, he isn't yet convinced that the African golden wolf is a new species. For instance, he says scientists have yet to tease apart some conflicting results in the DNA analyses.

"There's still a lot of work to be done," he said.

Greger Larson, a bioarchaeologist at the University of Oxford in the U.K., is convinced by the new research.

"They have phenomenal data and they do a nice series of analyses. It's a super airtight case," Larson said. (See National Geographic's grey wolf pictures.)

So why do the African golden wolf and the Eurasian jackal look the same if they're distantly related?

Study leader Koepfli says that the same evolutionary pressures likely influenced the animals' evolution. For instance, the canids' harsh desert habitats could have led to their small, lean bodies and light coats, which don't absorb as much sunlight.

"We're finding that the genetic information can tell us a very different story about animals," Koepfli said.

Follow Carrie Arnold on Twitter.


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