Showing posts with label extinction. Show all posts
Showing posts with label extinction. Show all posts

Thursday, 21 November 2013

Will the Dingo join the Thylacine?


The last Tasmanian tiger died a lonely death in the Hobart Zoo in 1936, just 59 days after new state laws aimed at protecting it from extinction were passed in parliament.

But the warning bells about its likely demise had been pealing for several decades before that protection came too late - and today we’re making many of the same deadly mistakes, only now it’s with dingoes.

Read more at The Conversation.


Wednesday, 30 October 2013

Toyota backs biggest search yet for Tasmanian Tiger



Biggest search yet for elusive Tasmanian Tiger

An international team of naturalists from the Centre for Fortean Zoology will go in search of the Tasmanian Tiger, Thylacinus cynocephalus, in one of the biggest concentrated searches yet for the elusive animal, which was officially declared extinct in the early 1980s.

Expedition leader Mike Williams said the trip – generously sponsored by Toyota Australia, and the first of several to be mounted by the group - will explore densely forested areas in the State’s north and south west.

“If we didn’t think there was even a slim chance of stumbling upon evidence in the form of scats, hair or footage, then we wouldn’t have committed to this expedition,” he said.

“Good quality Thylacine sightings are still being reported right across the state of Tasmania – 77 years after the last Thylacine died in captivity in a Tasmanian Zoo, and 27 years after it was declared extinct by the Tasmanian Government.

“A secondary aim of the trip is to look for evidence of healthy Tasmanian Devil, Sarcophilus Harrisii, populations in remote wilderness areas.

“We will also be monitoring for the presence of the No. 1 enemy of the State, Vulpes vulpes, the fox, rumoured to have established itself in Tasmania, and presently the subject of a multi-million dollar government-sponsored hunt.

“Let’s hope between our resources, those of other independent researchers, and the government’s, something comes to light – preferably a Thylacine over a fox - in the next 24 months.”

The team is highly experienced; several members have been on expeditions all over the world, including to Sumatra in 2011 in search of a mystery primate, the so-called Orang pendek, an as-yet unclassified species attracting serious scientific interest.

The team will be traversing the difficult terrain in two Toyota LandCruiser 200s – the luxury Sahara V8 Turbo-Diesel and the GX V8 Turbo-Diesel – and using sophisticated game cameras, starlight scopes, and dash-cameras.

Expedition team members include: Dr Chris Clark (UK), Richard Freeman (UK), Dr Hannah Jenkins (TAS/AUS), Tania Poole (VIC/AUS), Michael Williams (NSW/AUS), Rebecca Lang (NSW/AUS), Tony Healy (ACT/AUS), Orrin Hare (UK), Lisa Malam (UK), and Jonathan McGowan (UK).

Mike Williams can be contacted on 0416 303 371.

Seen a Tiger? Share your sighting at cfzaustralia@yahoo.com.au

Mike Williams holds a replica Thylacine skull next to the
Toyota LandCruiser 200 GX Turbo-Diesel.


Wednesday, 10 July 2013

De-extinction researchers hot on the Thylacine's trail


He may be a little greyer around the temples now at 68, but palaeontologist Professor Mike Archer is still hot on the trail of resurrecting the Thylacine.

He heads up the Lazarus Project, an Australian scientific team making some extraordinary progress in attempting to bring an extinct species back to life. 

At a gathering a recent gathering of 'de-extinction experts' (it's a bit of a mouthful but it's catching on, trust us!) Archer announced his team had created cloned embryos containing the DNA of an extinct creature, Australia's southern gastric-brooding frog. Producing the embryos, by implanting the extinct frog's DNA in donor frog eggs, brings Archer's team one step closer to undoing extinction, and one step ahead of teams around the world. 

Thursday, 4 July 2013

Night Parrot not extinct - proof emerges in Queensland!


The rare Australian Night Parrot (Pezoporus occidentalis) has been caught - on camera, that is - by a Queensland wildlife photographer.

We have posted numerous stories on this blog over the years about the nocturnal ground-dwelling bird (that some have unkindly described as a fat budgie), which had seemingly vanished from its outback Australian haunts, the spinifex grasses of the dry interior of the country.

Wildlife photographer John Young has spent more than 17,000 hours out in the field and notched up 15 years of searching, and says he has finally captured several photos and a 17-second video of the bird in western Queensland.

Last week he presented his evidence to more than 100 excited bird enthusiasts at the Queensland Museum under a cloak of secrecy, forbidding photographs and video. A commercial deal with a media company means Mr Young cannot publicly distribute the pictures.

Australian Birdlife Magazine editor Sean Dooley hailed the revelation as an extraordinary development.

"The night parrot is the Holy Grail of world bird-watching, it's probably the hardest bird in the world to see," he told the ABC.

Mr Young will not say exactly where the photos were taken in the hope it will protect the bird from poachers.

Watch the ABC's interview with Mr Young here.

Thursday, 31 January 2013

Disease not a factor in Tassie Tiger extinction: Adelaide University

Tasmanian Tigers at Beaumaris Zoo, Hobart c 1918.
Reproduced with permission from the Tasmanian Museum and Art Gallery
via University of Adelaide Marketing Communications team.

Humans alone were responsible for the demise of Australia's iconic extinct native predator, the Tasmanian Tiger or thylacine, a new study led by the University of Adelaide has concluded.

Using a new population modelling approach, the study contradicts the widespread belief that disease must have been a factor in the thylacine's extinction.

The thylacine was a unique marsupial carnivore found throughout most of Tasmania before European settlement in 1803. Between 1886 and 1909, the Tasmanian government encouraged people to hunt thylacines and paid bounties on over 2000 thylacine carcasses. Only a handful of animals were located after the bounty was lifted and the last known thylacine was captured from the wild in 1933.

"Many people, however, believe that bounty hunting alone could not have driven the thylacine extinct and therefore claim that an unknown disease epidemic must have been responsible," says the project leader, Research Associate Dr Thomas Prowse, School of Earth and Environmental Sciences and the Environment Institute.

"We tested this claim by developing a 'metamodel' - a network of linked species models - that evaluated whether the combined impacts of Europeans could have exterminated the thylacine, without any disease."

The mathematical models used by conservation biologists to simulate the fate of threatened species under different management strategies (called population viability analysis or PVA) traditionally neglect important interactions between species. The researchers designed a new approach to PVA that included species interactions.

"The new model simulated the directs effects of bounty hunting and habitat loss and, importantly, also considered the indirect effects of a reduction in the thylacine's prey (kangaroos and wallabies) due to human harvesting and competition from millions of introduced sheep," Dr Prowse says.

"We found we could simulate the thylacine extinction, including the observed rapid population crash after 1905, without the need to invoke a mystery disease.

"We showed that the negative impacts of European settlement were powerful enough that, even without any disease epidemic, the species couldn't escape extinction."

The study 'No need for disease: testing extinction hypotheses for the thylacine using multi-species metamodels', which also involved Professors Corey Bradshaw and Barry Brook from the University of Adelaide's Environment Institute, Professor Chris Johnson from the University of Tasmania, and Dr Bob Lacy, Chicago Zoological Society, has been published online in the Journal of Animal Ecology.

Tuesday, 8 January 2013

Long-beaked echidna may call Australia home



An exciting discovery in the dusty bowels of one of the world's most foremost museums may mean the critically endangered Long-beaked Echidna, long thought only to exist in New Guinea, did in fact one call Australia home - and may well still!

Our thanks to CFZ Australia reader Brad Wolfe for bringing this news to our attention.

A team of researchers recently discovered the specimen of the long-beaked echidna, an egg-laying mammal previously thought to exist only in New Guinea, laying in a drawer, long forgotten.

The 1901 specimen, described in the Dec. 28 issue of the journal Zookeys, had been shot and stuffed by an Australian naturalist named John Tunney, who came across the echidna on Mount Anderson, a mountain in a vast, arid and sparsely populated region of northwest Australia, while on an expedition for a British collector. Tunney, who was trained in taxidermy, stuffed and delivered the specimen, which was later bequeathed to the Natural History Museum.


Once they realized the echidna had been spotted in recent history, the team went back to Aboriginal communities in the West Kimberley region and found some women remembered watching their parents hunt long-beaked echidnas.

"They remembered that there used to be an echidna in the area that was much larger, and they pointed to pictures of the modern long-beaked echidna from New Guinea," Helgen told LiveScience.

Saturday, 5 January 2013

2013 a critical year for Tasmanian Devil


Kudos to the Hobart Mercury, which has written a stirring editorial about the fate of the Tasmanian Devil, earmarking 2013 as a critical year for the survival of the species.

"Imagine the first time a British settler heard the throaty growls and blistering howls of a pack of hungry Tasmanian devils devouring a carcase in the darkness of a forest at night.

"It must have been terrifying. There are few sounds so other-worldly as a devil's banshee wail.

"During the day, the British convicts, soldiers and settlers would have seen very little of the nocturnal marsupial carnivores but when dusk fell the husky yap, yap yap of a thylacine on the hunt for prey would have filled the night air along with devilish screams and the inimitable and bizarre coughing and barking of possums..."

Read this most excellent piece in full here.

Friday, 21 December 2012

Shrinking Devil gene pool not settlers' fault



European settlers were not responsible for thinning the gene pool of the Tasmanian devil, new research discussed over at The Conversation has found.

Tasmanian devils are currently under threat due to the spread of an aggressive facial tumour, one of only three recorded types of contagious cancer. The disease spreads so readily because genetic diversity in devils' immune systems is low. It is passed from devil to devil through biting.

It had previously been assumed that this lack of diversity was due to population decline that occurred as a result of European settlement.

Extinct & Endangered Birds of Australia


Author Sue Taylor, a 'twitcher' from Melbourne, Victoria, talks to ABC Radio about her new book John Gould's Extinct and Endangered Birds of Australia.

In 1838, John Gould, the 'father of Australian ornithology', visited Australia with the intention of gathering material for his great work on Australian birds. In the resulting publications, The Birds of Australia: In Seven Volumes (1848) and the accompanying Supplement (1869), Gould gave over 180 Australian bird species their scientific names.

John Gould's Extinct and Endangered Birds of Australia features 59 plates of birds from Gould's eight-volume work, birds that today are threatened or that no longer exist. Featuring exquisite full-colour lithographs reproduced from the National Library of Australia's copy of The Birds of Australia, this book gives an insight into the history of each bird's European discovery, as well as its subsequent fortunes or misfortunes. A detailed description of each species, its habitat, its habits, current threats and more are also included.

A sobering reminder of all that we have lost, this book provides and opportunity to reflect on how we might also take action to protect and preserve the birds for whom it is not too late.

Monday, 17 September 2012

Recovery plan for Tassie Devils 'still a draft'



The Tasmanian Times has raised a valid point about efforts to save the Tasmanian Devil.

In May 2006 the Tasmanian devil was listed as a vulnerable species under the Commonwealth EPBC Act. One would expect that such a globally recognised endangered species would have an approved Recovery Plan considering the generous funding available and the dedicated Save the Tasmanan Devil Program staff.

However, the plan is still in its draft format after more than 3 years!

Monday, 20 August 2012

Maria Island Tasmanian devil ark approved



A proposal to establish a healthy population of Tasmanian devils on Maria Island has been approved.

The Environment, Parks and Heritage Minister, Brian Wightman, said the Parks and Wildlife Service has completed a comprehensive assessment of the project. The Development Proposal and Environmental Management Plan have also been approved by the Tasmanian and Australian Government's Save the Tasmanian Devil Program.

"For 18 months, the Save the Tasmanian Devil Program has been monitoring wildlife in the Maria Island National Park," Mr Wightman said.

"Members have been carefully researching how to release and manage a population of devils. They've been considering potential impacts, and developing mitigating measures, if required.

"They've also completed formal assessments and applications under State and Commonwealth requirements.

"This project has been researched and analysed - and it stacks up. It'll now become a valuable part of our strategy to save the iconic and much-loved Tasmanian Devil from Devil Facial Tumour Disease," he said. The Parks and Wildlife Service has imposed conditions on the approval, to protect the island's natural and cultural heritage values.

"Despite all the work done so far, the program recognises the potential for some unforeseen impacts from introducing Tasmanian devils to Maria Island," Mr Wightman said. "That's why the introduction will be staged over time, with the devils and other species under constant monitoring.

"This project will be slowly and carefully introduced, to ensure it's done safely and effectively," he said.    

With Devil Facial Tumour Disease continuing to spread to new populations, Mr Wightman said establishing secure insurance populations is increasingly vital.

"This project helps add to a healthy population of Tasmanian devils, that can be used to re-build wild populations, if needed, in future," he said.

Mr Wightman said the proposal involves releasing up to 50 Tasmanian devils on Maria Island, in stages, over the next two years. The next stage is working with the Zoo and Aquaria Association to identify the most suitable animals for release.

For the initial release, about 10 animals will be chosen from the overall insurance population of more than 500, which meet genetic and behavioural criteria. That process will happen in coming months, with the initial release planned for later this year.

Thursday, 19 April 2012

The Observer Tree - fight to save a Tassie forest


Perched 60m up an ancient gum tree in a remote part of south-west Tasmania, Miranda Gibson's tree-top home has a spectacular view across one of the biggest untouched tracts of temperate rainforest left in the southern hemisphere.

For more than three months, 30-year-old Gibson has been living high above the canopy floor that is the home to some of Australia's most threatened indigenous wildlife, including the Tasmanian devil and spotted tail quolls. Flying overhead are the equally threatened Tasmanian white goshawks and wedge-tailed eagles.

But Gibson's arboreal home is under imminent threat. These ancient forests are currently unprotected and could be destroyed by logging any day.

In a dramatic bid to save the trees and its wildlife from the chop, Gibson has created the Observer Tree, a global media centre bristling with the latest digital technology to bear witness to the encroaching bulldozers and loggers.

"My aim has been to bring the images of the forests and the truth about the ongoing logging of these areas to the international community and beam my forest protection message across the world," says Gibson.

Monday, 16 April 2012

Leadbeater's Possum teeters on the brink


The Leadbeater’s Possum is tiny. Just 10 centimetres long and weighing less than 100 grams, it can easily nestle in the palm of your hand. And with its long, bushy tail and big, inquisitive eyes, it certainly qualifies as cute and cuddly. It’s a Victorian icon, too – it was anointed the state’s faunal emblem in 1968.


Put bluntly, without help, the Leadbeater’s Possum will be extinct within a decade. “Nobody else can save it, just us,” says Rachel Lowry, Zoos Victoria’s director of wildlife conservation and science. “It’s absolutely adorable, but when I mention it to people, not many know much about it or that it’s found only in Victoria. They don’t know how badly it was impacted on Black Saturday and how most of its habitat was destroyed.”

In February, Zoos Victoria rangers rescued the last three Leadbeater’s Possums from Lake Mountain and took them to Healesville Sanctuary, where they have become the only examples of the species in captivity anywhere in the world.

Lowry hopes that within three years, Zoos Victoria will have bred enough of them to integrate them back into the wild.

The animal is not alone in its plight. In 2009, Lowry and her colleagues identified 20 Victorian species that were within a few years of becoming extinct.

Also on the list are the Tasmanian devil, the Eastern barred bandicoot, the Mountain pygmy-possum and the Helmeted Honeyeater, among others. They form Zoos Victoria’s Threatened Species Program, one of the organisation’s conservation projects.

“We didn’t want to keep getting phone calls when certain species were down to the last handful. It’s too late then and it’s so demoralising to miss out on saving a species,” says Lowry, recalling how her team narrowly missed out on saving the last Pipistrelle bat on Christmas Island that year. “When you have species literally hanging on and literally in one locality, something like a natural disaster can wipe them out,” she says.

While many Melburnians have fond memories of visiting Melbourne Zoo, and perhaps taking overseas visitors to the world-class Parkville attraction, Lowry stresses that the zoo’s focus has not been on entertainment “for such a long time”.

“Many people have old world views of zoos, where they think it’s just a tourist attraction,” she says. “Not a lot of people in the community realise that we’re a not-for-profit organisation and that all the money we raise – every dollar – is invested back into conservation.”

With Melbourne Zoo’s 150th birthday drawing closer (October 6), Lowry and her colleagues are trying to engage community support not only for the Threatened Species Program but also for other conservation work.

Zoos Victoria’s reach is enormous. More than 1.7 million people visit its three zoos each year, and more than a million visit its website. “How many conservation organisations do you know that have access to that enormous number of people, face to face?” asks Lowry. “We’ve come to realise, in recent years, that if we marry the work we’re already doing with what we call community conservation – conservation driven by community action – we’ll have something really, really powerful.”

Late last year, Zoos Victoria launched its Safe Haven Appeal to raise $85 million over the next five years to modernise what Lowry calls the zoo’s “ageing exhibits” and support its conservation projects.

Zoos Victoria Foundation executive director Pamela Sutton-Legaud says 75 per cent of the zoos’ annual funding comes from donations, sponsorship and corporate partnerships.“Many people think we’re entirely government-funded or that our money comes from other sources, but it doesn’t and we want people to understand that,” she says. “With something like the Threatened Species Program, if we want our native species to survive, we really need people to support their zoo.”

Providing a fun day out for families is a byproduct of the zoos’ conservation work, says Sutton-Legaud. “Most people in Victoria love our zoos, but if they’re of a certain age, chances are they haven’t been out here since they were kids,” she says. “That means they don’t understand how we’ve changed and how our focus is to become a world-leading zoo-based conservation organisation.

‘‘To keep the organisation sustainable, we need people to know everything we raise goes back into the conservation of our species.”

The Safe Haven Appeal has funded a new gorilla exhibit at Werribee and an interactive educational precinct, Growing Wild, at Melbourne Zoo, the first stage of which is expected to be open in time for the 150th celebrations in October.

The Threatened Species Program, which runs at a cost of $2?million, has already had several successes.

A small number of Eastern barred bandicoots, rabbit-sized marsupials thought in the 1990s to be extinct, was found in a rubbish tip in Hamilton. “We stepped in, learnt how to breed them and now we’ve been doing some trial releases,” says Lowry.

Visitors to Werribee Open Range Zoo can see the bandicoots in their natural basalt plains environment. When other species are at a similar stage, they will also be on show.

“These creatures can’t stay back of house any more. They need Victorians to care about them and fall in love with them,” says Lowry. “If every zoo focused on its backyard rather than just the iconic species like lions, tigers and elephants, biology would be in a much better place.”

Zoos Victoria’s threatened species biologist, Dan Harley, who has been involved with the program since it started, says the zoo has “close to half” the 20 threatened species in captivity. He and his team spend months researching a species before “collection day”, when they hope to capture the animals. The creatures are then monitored around the clock before they undergo a breeding program. They are eventually reintroduced into the wild.

“There are different time frames on each species as to when we hope to achieve certain goals,” Harley says. “But the overall goal is the same for each species – to produce each animal to the point where we can put it out there and replenish the wild population.”

Lowry has spearheaded two successful Zoos Victoria campaigns. More than 50,000 old mobile phones have been donated to financially support rangers in the Democratic Republic of Congo, where illegal mining of coltan, used in phones, threatens gorilla habitat.

The fight for mandatory labelling of palm oil in food products continues, even though the Truth in Labelling–Palm Oil Bill was rejected by the House of Representatives’ economics committee last year. More than 160,000 people signed a petition to support the bill, which Lowry believes could help save some of the estimated 50 orang-utans that die each week because their habitats are being cleared for palm oil plantations.

“That campaign (Don’t Palm Us Off) had just a $4000 budget and I was hoping for a couple of thousand signatures. But it completely resonated with the community and within a few months it had inspired Senator Nick Xenophon (who supported the parliamentary push).”

In Melbourne Zoo’s 150th year, Sutton-Legaud hopes people dig into their pockets for the world-class conservation work being done in our backyard.

“The zoo has never really been on the radar of many people as to where they would give their donations,” she says. “But everything helps – from buying something in our stores to adopting an animal or becoming a member of the zoo.

“Hundreds of millions of people enter zoos around the world. If we develop campaigns here in Melbourne and take them globally, we’ll be achieving our aim of being world leaders. Conservation is why we exist – if we’re not doing it, we may as well shut our gates.”

Monday, 26 March 2012

Maria Island considered for 'insurance' Devil colony


Tasmania’s Parks and Wildlife Service is considering a proposal to set-up a healthy population of Tasmanian Devils on Maria Island.

The PWS is seeking community comment on the translocation proposal, put forward by the Save the Tasmanian Devil Program.

The Minister for Environment, Parks and Heritage, Brian Wightman, said the proposal would initially release up to 50 devils into Maria Island National Park, to establish a wild, free-ranging, disease-free population.

“Our scientists are thinking creative and working extremely hard to help save this precious iconic species,” Mr Wightman said.

“The Save the Tasmanian Devil Program has identified Maria Island as a potential site because of its size, appropriate habitat, and a large suite of prey species for the Tasmanian devil.

“Other benefits include full-time Parks and Wildlife Service staff, and the fact that the only vehicles on the island are PWS ones – reducing the threat of road-kill,” he said.

The Maria Island National Park Plan of Management requires a comprehensive assessment before introducing a new animal to the island - to examine possible environmental, social and economic impacts, along with possible mitigation efforts.

A Development Proposal and Environmental Management Plan will be advertised on Saturday 24 March. It examines the possible impacts of introducing Tasmanian Devils to the Island, and provides an opportunity for community comment on the proposal.

The Save the Tasmanian Devil Program has been carrying out extensive wildlife monitoring and impact assessments, as well as seeking required approvals under State and Commonwealth legislation.

As the land manager of Maria Island, the PWS also has requirements to follow as part of assessing these type of proposals.

“We make these decisions cautiously, and with extensive research, to ensure it’s the right decision for both the Tasmanian Devils and the environment of Maria Island,” Mr Wightman said.

The Save the Tasmanian Devil Program Manager, Andrew Sharman, said the assessment process being undertaken by the Parks and Wildlife Service is the next step in the assessment and approvals process.

“We have been undertaking wildlife monitoring on the island over the last 18 months to ensure we have the best information available for monitoring long-term impacts on the island’s species,” Mr Sharman said.

“An extensive planning process has been also undertaken which has provided scientific and wildlife expert input. The translocation proposal has also been assessed under the Environment Protection and Biodiversity Conservation Act 1999 and has been approved to proceed,” he said.

Mr Sharman said the proposal is another measure for securing the ongoing survival of the Tasmanian devil in the wild.

“Tasmanian devils are facing a major threat to their long term survival in the wild, with the Devil Facial Tumour Disease (DFTD) resulting in a population decline of more than 80 per cent since the disease was first recorded in 1996,” Mr Sharman said.

“Despite major advances in knowledge about this disease, the only tool currently available to break the transmission cycle of the disease is to place healthy devils in situations where they will not encounter diseased individuals.

“The aim of translocating Tasmanian devils to Maria Island is to establish a wild, breeding, DFTD-free population to preserve important traits that may be required for future introductions of devils back to the Tasmanian mainland.

“Island translocations such as this one could provide an ecologically and economically sustainable solution to managing insurance populations,” he said.

The Development Proposal and Environmental Management Plan is available at the PWS website at www.parks.tas.gov.au.

Hard copies are available at Service Tasmania shops.

The public comment period closes on 27 April, 2012.

Thursday, 15 March 2012

Hunt is on for 'extinct' Javan tiger

A Javan tiger captured on film in 1938.
Meru Betiri National Park officers have installed five trap cameras to establish the existence of Javanese tigers (Panthera tigris sondaica), now believed to be extinct, according to Antara News.

In the past two months, efforts to find Javanese tigers have been stepped up at the national park, according to chairman of the TNMB Bambang Darmadja.

"Many people believe that Javanese tigers are extinct. So we are trying to prove that the endangered animal still exist at Meru Betiri, by installing trap cameras," he said.

The national park covering a total area of 58,000 hectares is located in Jamber and Banyuwangi District, East Java Province.

According to a research conducted in 1997, officers found footprints and dung strongly believed to be that of Javanese tigers.

Tuesday, 6 March 2012

Did dingoes play a role in Thylacine extinction?


A new academic paper is out...

Impact of the dingo on the thylacine (Tasmanian Tigers)

Fillios, Melanie, Mathew S. Crowther, and Mike Letnic. 2012. “The Impact of the Dingo on the Thylacine in Holocene Australia.” World Archaeology 44 (1): 118–134.

"The thylacine (Thylacinus cynocephalus) was one of Australia’s largest predators, but became extinct in mainland Australia soon after the arrival of a new predator, the dingo (Canis lupus dingo) around 3500 bp. Evidence implicating the dingo in the thylacine’s extinction has been equivocal, largely because thylacines are thought to be considerably larger than dingoes. Thus, other concurrent factors, such as shifts in human technology and population increase as well as climate change, have been cited to explain their extinction. Here we present new morphological evidence that female mainland Holocene thylacines were actually smaller than dingoes. We discuss these findings against archaeological and contemporary ecological evidence concerning dingoes’ environmental impacts, and provide evidence that, as novel predators, dingoes induced a trophic cascade that had dramatic impacts on the fauna and economy of Holocene Australia. We suggest that dingoes, owing to their larger brains and body size, were likely a primary agent for the extinction of the thylacine from mainland Australia."

Read more here.

Thursday, 1 March 2012

Turning back extinction clock


The fruit of a narrow-leaved campion, buried in permafrost by a ground squirrel 32,000 years ago on the banks of the Kolyma river in Siberia, has been coaxed into growing into a new plant, which then successfully set seed itself in a Moscow laboratory.

Although this plant species was not extinct, inch by inch scientists seem to be closing in on the outrageous goal of bringing a species back from the dead.

The mammoth is the best candidate for resurrection mainly because flash-frozen ones with well-preserved tissues are regularly found in the Siberian permafrost.

Read more here.

Monday, 23 January 2012

Thylacine hunting 'a waste of money'


People should stop wasting time and money looking for the Tasmanian tiger, according to new Australian research.

Dr Diana Fisher and Dr Simon Blomberg from the University of Queensland's school of biological sciences report their findings in a recent issue of Conservation Biology.

Since the last wild thylacine was captured in 1933, there have been ongoing searches and numerous unconfirmed sightings of the carnivorous marsupial.

But, says Fisher, such efforts are misguided.

"There's been more search efforts for the thylacine than any other mammal globally," she says.

"I think that's just a waste of money."

What do you think?

Monday, 2 January 2012

Dog breed teeters on brink of extinction

http://en.wikipedia.org/wiki/File:Sealyham_terrier_230809.JPG

Normally we only feature news about wild animals on the endangered and extinction lists.

But a rare breed of domestic dog, once popular among royalty and celebrities, is on the brink of extinction and probably deserves a mention.

Sealyham Terriers were first bred for pest control, but are now rarer than endangered species such as giant pandas and tigers!

The breed's popularity soared in the 1920s, when the Kennel Club - the UK's largest dog organisation - registered more than 2000 puppies every year. The breed was exported overseas and bred here in Australia.

The dogs, often described as intelligent and loyal, were favorites with celebrities like Elizabeth Taylor, Cary Grant and Alfred Hitchcock.

Their gregarious personalities and boundless energy, meant they remained sought after for decades, and in 1959 a Sunday newspaper reported, "A notice has been posted in Clarence House and Windsor Castle giving explicit instructions that when Princess Margaret has breakfast in bed, her two Sealyhams must be brought to the room along with her breakfast tray."

But last year only 49 were bred in the UK, the breed's home, putting them on the Kennel Club's top three most endangered native breeds list.

The dramatic change is attributed to new fashions, the availability of a greater number of breeds and the decline of ratting as a form of vermin control.

Sealyham Terriers are believed to be a mix of the now extinct English White Terrier combined with Dandie Dinmont, the Fox Terrier, the West Highland and the Corgi.

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