Who's afraid of the big bad wolf: Is the dingo friend or foe?

Who’s afraid of the big bad wolf: Is the dingo friend or foe?
Is removing a top predator really an experiment we want to try? Credit: AAP

Another attack on Fraser Island – the flashpoint for dingo management issues – has highlighted our complex relationship with these animals once again.

But when we shoot and trap dingos, do we really know what we're doing?

A predator's plight

Along with and kangaroos, the dingo is one of Australia's most recognisable and iconic species, and yet it suffers from an identity crisis that threatens its continued survival in the wild.

As a top predator, the dingo is not alone in being threatened with .

Across the globe, species such as wolves, bears, and tigers are walking a knife's edge between survival and extinction.

Shark populations, the top predators of our oceans, have been reduced by more than 90%.

In some sectors of the Australian community, are considered the number one due to their attacks on livestock and potential threat to .

As a result they are intensively controlled through poisoning, shooting and trapping.

But others consider dingoes to be our best chance at saving many of our native threatened and endangered species from extinction.

These people argue for the continued preservation of dingoes and, most controversially, that dingoes need to be reintroduced into some areas.

Learning from the wolves

If this story sounds familiar to you, that is because it is almost identical to the history of wolf conservation in North America, and the controversy that surrounded their famous reintroduction into Yellowstone National Park in 1995-96, after a near 90-year absence.

The reintroduction of wolves led to a noticeable reduction in grazing by previously overabundant elk, and subsequent significant recovery of native aspen, willow and cottonwood trees.

Indeed, the wolves' positive effects were felt throughout the entire ecosystem.

The reintroduction of led to beavers returning, increases in numbers of some small predators and , but equally importantly, reductions in coyotes, which indirectly benefited the threatened pronghorn antelope population.

Dingoes and invasive species: Alien vs Predator

So what relevance does this story hold for Australia?

Recent research from around the globe is demonstrating that large predators, including dingoes, play a critical role in maintaining the health of our ecosystems.

Predators make ecosystems more resistant to the negative impacts of invasive species and climate change.

The most critical effects dingoes have on the Australian landscape are in reducing populations of both overabundant herbivores (such as kangaroos) and introduced smaller-bodied predators, specifically cats and foxes.

Many thousands of dollars are spent annually in attempting to control overabundant kangaroo populations because of their perceived impacts on livestock grazing.

Unchecked kangaroo numbers can undoubtedly devastate habitats, in some cases leading to near complete removal of vegetation and severe erosion.

These effects, combined with those of cats and foxes, which prey heavily on small to medium-sized native animals, place huge pressure on our native biodiversity.

Encouragingly, large-scale, ecological studies from across Australia are now showing unequivocally that dingoes, where left alone and in reasonable numbers, are able to reduce cat, fox and kangaroo numbers substantially.

Running counter to this is the unfortunate media attention surrounding dingoes, including attacks like the one on Fraser Island this Easter, and stock losses attributed to dingoes or wild dogs.

Such events do not aid the case to restore dingoes across Australia as a matter of urgency.

Conserve or cull?

The dingo has recently been identified as a threatened species by the Victorian government (in part due to the risk of hybridisation with feral domestic "wild" dogs.)

But at the same time, this government is also contemplating aerial poison baiting to control wild dog populations. Such decisions would appear at odds with each other.

Regardless of political challenges, the question arises: if we accept the value of dingoes and abandon our attempts to eradicate them, how can we manage the risk they pose to the economic viability of livestock grazing?

The answer to that question is not simple and requires us to take a broad view of land management than we do at present.

Dingoes not dollars

It's certainly true that dingoes on occasion kill and eat livestock, but at the same time they also kill millions of , pigs, feral goats and rabbits annually.

This effect indirectly benefits sheep and cattle by reducing competition for food, and ultimately benefits graziers' hip pockets.

Importantly, the services provided by dingoes come for free, as opposed to our own costly pest control and conservation interventions.

We need to assess in dollars and cents how much stock loss we may incur by maintaining dingoes in the landscape against the positive effects dingoes have in controlling cats, foxes and herbivores, and how this assists conserving our native species.

In some situations we may even be able to have our cake and eat it too.

We can protect stock that may be vulnerable to dingo attack using livestock guardian animals (such as Maremma dogs), and still maintain dingoes in the landscape to control the unwanted impacts of cats, foxes and overabundant herbivores.

What a coup that would be.

Explore further

Researchers examine impact of dingo population on feral cats

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Citation: Who's afraid of the big bad wolf: Is the dingo friend or foe? (2013, September 5) retrieved 16 September 2019 from https://phys.org/news/2013-09-afraid-big-bad-wolf-dingo.html
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User comments

Sep 05, 2013
There is one large predator that plays a major role in the unhealth of all ecosystems. You can hear its call everywhere, "I didn't do it man".

Sep 05, 2013
It's because farmers keep shooting them. They are native and have been here 4000 years. They are asian wolves. Trophy hunters should leave them alone and focus on real pests like cane toads, wild pigs, foxes and feral cats.

Sep 06, 2013
The use of poison in nature should be considered a major crime.

"aerial poison baiting" is insane. People with this kind of thoughts deserve to taste their own medecine...

Sep 06, 2013
The use of poison in nature should be considered a crime

I couldn't agree more. The poisoning, trapping and shooting of dingoes/hybrids should be illegal. There's no wonder the purebreds are disappearing.

Sep 06, 2013
The use of poison in nature should be considered a major crime.

TOO RIGHT! poisoning does not guarantee the intended target, either, unless you HAND feed it to the target. it has widespread effects that can negatively impact more t just dingo's... anything that might feed on the poisoned carcass (whatever it may be) is also subject to poison.

Sep 09, 2013
You have got it all wrong because the thylacine was alive and well the last time I saw it.

Sep 10, 2013
DB: If that is what really happened, then either you are very old, and stuffed. Or the thylacine you saw, was. (http://en.wikiped...hylacine ) The last documented wild specimen was killed in 1930, on the island of Tasmania. http://www.nma.go...hylacine
Besides, the article was about dingos (which are NOT found in Tasmania), not Tasmanian Tigers.

Best Regards, DH66 :)

Sep 10, 2013
You have got it all wrong because the thylacine was alive and well the last time I saw it.

sorry... I am with DarkHorse66 on this one.... pics, or it didn't happen.
(better make sure the exif data and pic are time stamped as well, and it would be good to include external reference material in the pic too, like a current newspaper in the foreground. also wouldn't hurt to provide GPS coordinates for scientific study).

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