Tasmanian Tiger Extinction Mystery

June 27, 2007

A University of Adelaide project led by zoologist Dr Jeremy Austin is investigating whether the world-fabled Tasmanian Tiger may have survived beyond its reported extinction in the late 1930s.

Dr Austin from the Australian Centre for Ancient DNA is extracting ancient DNA from animal droppings found in Tasmania in the late 1950s and ‘60s, which have been preserved in the Tasmanian Museum and Art Gallery.

“The scats (droppings) were found by Eric Guiler, Australia’s last real thylacine expert, who said he thought it more probable they came from the Tasmanian Tiger rather than a dog, Tasmanian Devil or quoll,” Dr Austin said.

The Tasmanian Tiger, or thylacine, was widespread in Tasmania when European settlers arrived in 1803. Resembling a large, long dog with stripes, a heavy stiff tail and big head, the thylacine was the world’s largest marsupial carnivore at the time of its extinction in 1936 when the last one in captivity died in Hobart Zoo.

“If we find thylacine DNA from the 1950s scats it will be significant,” Dr Austin said. “The last Tasmanian Tiger killed in the wild was in 1918, so there’s a 20-year gap between a wild sighting and one in captivity. It’s a long shot that they were still around in the 1950s, but we can’t rule it out at this stage.”

Dr Austin is also extracting DNA from bones of both the Tasmanian Tiger and Tasmanian Devil found on mainland Australia. Scientists believe the Tiger lived on the mainland 2000 years ago and the Devil 500 years ago.

“The DNA may be able to reveal they were different species to the Tasmanian animals, although it’s unlikely. It’s only been 10,000 years since Bass Strait flooded and Tasmania was separated from the mainland. That’s not a long period of time in evolutionary terms.

“The main reason people think they may have been different species is that the Tasmanian Tiger was much bigger than its mainland cousins. That’s not surprising given the climate because the colder the environment, the larger the animal.”

Dr Austin is working in collaboration with Oliver Berry from the University of Western Australia, another zoologist who is extracting ancient DNA from scats in Tasmania to find evidence of foxes.

Source: University of Adelaide

4.1 /5 (12 votes)  

Rank 4.1 /5 (12 votes)
Tags

Relevant PhysicsForums posts

More news stories

Entire genome of extinct human decoded from fossil

(PhysOrg.com) -- In 2010, Svante Pääbo and his colleagues presented a draft version of the genome from a small fragment of a human finger bone discovered in Denisova Cave in southern Siberia. The ...

Biology / Biotechnology

created Feb 07, 2012 | popularity 4.7 / 5 (58) | comments 44 | with audio podcast

Why are there so few fish in the Earth's oceans?

(PhysOrg.com) -- A Stony Brook University researcher has found that, contrary to popular belief, there are not plenty of fish in the sea.

Biology / Plants & Animals

created Feb 08, 2012 | popularity 4.3 / 5 (17) | comments 26 | with audio podcast

Miami battling invasion of giant African snails

No one knows how they got there. But an invasion of African giant snails has southern Florida in a panic over potential crop damage, disease and general yuckiness surrounding the slimy gastropods.

Biology / Ecology

created Feb 10, 2012 | popularity 4.5 / 5 (2) | comments 5

The power of estrogen -- male snakes attract other males

A new study has shown that boosting the estrogen levels of male garter snakes causes them to secrete the same pheromones that females use to attract suitors, and turned the males into just about the sexiest ...

Biology / Plants & Animals

created Feb 10, 2012 | popularity 4.8 / 5 (6) | comments 2 | with audio podcast

Deciding to go left or right: Researchers use device to determine that lower animals can navigate too

For decades, scientists have associated binary decision making — opting to go left or right — with higher-ranking animals, including humans. A team of Harvard researchers, however, is rewriting that ...

Biology / Plants & Animals

created Feb 09, 2012 | popularity 4 / 5 (1) | comments 4 | with audio podcast


Walney offshore wind farm is world's biggest (for now)

(PhysOrg.com) -- The Walney wind farm on the Irish Sea--characterized by high tides, waves and windy weather--officially opened this week. The farm is treated in the press as a very big deal as the Walney ...

GPS court ruling leaves US phone tracking unclear

A US Supreme Court decision requiring a warrant to place a GPS device on the car of a criminal suspect leaves unresolved the bigger issue of police tracking using mobile phones, legal experts say.

Europeans protest controversial Internet pact

Tens of thousands of people marched in protests in more than a dozen European cities Saturday against a controversial anti-online piracy pact that critics say could curtail Internet freedom.

Europe stakes billion-dollar bet on new rocket

A pencil-slim rocket is scheduled to lift into space from South America on Monday, carrying a billion-dollar bet that Europe can grab a juicy slice of the market to place satellites in low orbit.

Study finds that anti-diabetic medication can prevent the long-term effects of maternal obesity

In a study to be presented today at the Society for Maternal-Fetal Medicine's annual meeting, The Pregnancy Meeting, in Dallas, Texas, researchers will report findings that show that short therapy with the anti-diabetic medication ...

Netflix settlement trims 14 pct off 4Q earnings

(AP) -- Netflix pressed the rewind button on its fourth-quarter earnings after settling allegations that the video subscription service violated a consumer-privacy law.