Monster hunters of the Southern Hemisphere cfzaustralia@gmail.com
Showing posts with label dna. Show all posts
Showing posts with label dna. Show all posts
Saturday, 4 January 2014
Is Prof Sykes putting the nail in the Yeti coffin?
by Andrew Masterson, www.brisbanetimes.com.au
October 2013 will go down as a bittersweet watershed in the curious field of cryptozoology - the study of creatures that probably don't exist.
Cryptozoologists are people who search for animals of folklore and rumour: yowies, bunyips, rogue panthers, ape-men, the Loch Ness monster, the Beast of Buderim, the Goatman of Maryland, Oklahoma Octopus and many more.
In October, though, something really weird happened.
A well-respected mainstream geneticist, Dr Bryan Sykes, from Oxford University, announced that he had done DNA tests on two hair samples collected, centuries apart, by yeti hunters. The samples, he reported, both came from a species unknown to science.
For believers in the Abominable Snowman, that was the good news. The bad followed immediately: the species was not an ape, but some type of bear. The mysterious creature roaming the Himalayas was not so much Yeti as Yogi.
Sykes' research, yet to be published in full, has done little to dampen the enthusiasm of Australia's cryptozoological community. The hunt for our own ape-man, the Yowie, continues unabated.
Prime among the Yowie hunters is Rex Gilroy, 70, self-proclaimed ''father of Australian cryptozoology'', author, naturalist and hunter of improbable beasts.
''The silly sketches of Yowies as giant, hairy apes are all wrong,'' he says. ''Yowies are a living form of [human ancestor] Homo erectus.''
Gilroy claims to have collected a number of fossil hominid skulls - of Homo erectus and the even earlier Australopithecus - which he says proves that human ancestors were living in Australia long before the arrival of Aborigines.
Some of his best specimens were discovered near the Fish River in the central western district of NSW.
''I believe there is a population of Homo erectus still living there,'' he said.
''The Yowie is no gorilla-like monster. It's a fire-making, tool-making hominid. I've found campsites and stone tools, some of them only a few months old.''
Gilroy is also active in the hunt for two perennials of Australian cryptozoology - the thylacine and wild panthers.
This last is a popular target for investigation in Victoria. Reports of big cat sightings appear frequently in country newspapers, blurry video clips crop up on telly, and shots of hideously mauled dead sheep are often cited as evidence of big cat kills.
Indeed, in 2012 one of the first acts of incoming Victorian Premier Denis Napthine was to commission a review of big cat sightings. The review, conducted by the Department of Primary Industries, concluded that feral panthers, jaguars or other feline peak predators were almost certainly not roaming around the state.
However, because it is impossible to prove a negative, the report's findings are unlikely to dampen the spirits of the cryptozoological sleuths. Prime among them is Simon Townsend, of Geelong, who heads a group called Big Cats Victoria.
''We are desperate for actual specimens,'' he said, ''but that's a difficult thing. We think the cats are Malay leopards - black leopards - and there are maybe only a couple of dozen across the state.''
Townsend is careful to separate his pursuit from the windier shores of crypto-research.
''We take this as a totally serious undertaking,'' he said. ''We keep well away from the 'goblin university' folk. They're not very useful when you're after something that kills sheep and eats roos.''
Townsend enjoys a long-term collaboration with crypto-sceptic historian Dr David Waldron, based at Federation University in Ballarat. In 2012 the pair combined to produce a book: Snarls from the Tea-Tree: Big Cat Folklore. Waldron said that while ideas of yowies, bunyips and other fabulous beasts can be traced to the creation myths of different Aboriginal communities, the big cat idea arrived with the Europeans.
''Big cat stories go way back into the 19th century,'' he said.
''Settlers found themselves in an alien landscape, and they had to try to make sense of things such as stock predation and farm failures.
''Their tools for doing this derived from European colonial experience in Africa and Asia - where there were big, dangerous animals, including big cats.''
Some early settlers, he said, were startled that there were no monkeys in Australia. In 1826, settlers visiting Rottnest Island heard sounds in the night, noted dig-marks in the ground, and saw a large shape in the water. They concluded the place was home to hippos.
Big cats in the bush are not, in one sense, mythical at all. There have been several cases, especially in the later 19th century, when lions, pumas and so forth have escaped from travelling menageries and nicked off into the scrub. Waldron has a collection of skeletal remnants lodged in Federation University's library.
The myth kicks in with the idea that these cats somehow survived, bred, and established permanent populations. The usual evidence for this - bizarre stock mutilations - is easily explained.
''Most likely, the mutilations are caused by multiple animals,'' said Waldron. ''A wild dog kills the sheep, then a fox has a go, then birds, rats, and so forth. The result looks unusual.''
Back in NSW, Rex Gilroy, perhaps surprisingly, rejects the idea of wild big cats roaming the bush.
''The panther is a marsupial,'' he says. ''It's a large marsupial, possibly a relation to the extinct marsupial lion. There have been plenty of sightings around Katoomba.''
While many professional scientists dismiss cryptozoology as complete fruit-loopery, Professor Bill Laurence, a distinguished biologist at Queensland's James Cook University, sees great value in the field.
He points out that cryptozoologists have a good record of finding ''Lazarus species'' - types of animals presumed to be extinct but subsequently rediscovered. If the thylacine turns out not to be extinct, it will be a cryptozoologist who finds it, if only because no one else is looking.
''I think there is something similar between cryptozoologists and people who search for aliens, for instance,'' Laurence said. ''There's a desire for mystery, a love of the notion of something out there that we don't understand. It touches something deep in the human spirit.''
As for Sykes' possible Himalayan bear-cum-yeti discovery, Laurence is waiting for the full results to be published.
''A giant bear there would be very remarkable,'' he said. ''What's its food base? I'm a bit leery about it, but it's certainly put the cat among the pigeons.''
Read more: http://www.smh.com.au/lifestyle/where-the-wild-things-arent-20140103-308eu.html#ixzz2pfaz5zAE
Labels:
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black panther,
brian sykes,
david waldron,
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Thylacine,
yeti
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.
Wednesday, 6 March 2013
Australians use ancient DNA to solve 320-year-old Falkland Islands wolf mystery
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| An illustration of the Falklands Islands Wolf by Michael Rothman for Ace Coinage. |
University of Adelaide researchers have found the answer to one of natural history's most intriguing puzzles - the origins of the now extinct Falkland Islands wolf and how it came to be the only land-based mammal on the isolated islands - 460km from the nearest land, Argentina.
Previous theories have suggested the wolf somehow rafted on ice or vegetation, crossed via a now-submerged land bridge or was even semi-domesticated and transported by early South American humans.
The 320-year-old mystery was first recorded by early British explorers in 1690 and raised again by Charles Darwin following his encounter with the famously tame species on his Beagle voyage in 1834.
Researchers from the University's Australian Centre for Ancient DNA (ACAD) extracted tiny pieces of tissue from the skull of a specimen collected personally by Darwin. They also used samples from a previously unknown specimen, which was recently re-discovered as a stuffed exhibit in the attic of Otago Museum in New Zealand.
The findings were published in Nature Communications today and concluded that, unlike earlier theories, the Falkland Islands wolf (Dusicyon australis) only became isolated about 16,000 years ago around the peak of the last glacial period.
"Previous studies used ancient DNA from museum specimens to suggest that the Falkland Islands wolf diverged genetically from its closest living relative, the South American maned wolf (Chrysocyon brachyurus) around seven million years ago. As a result, they estimated that the wolf colonised the islands about 330,000 years ago by unknown means," says Associate Professor Jeremy Austin, Deputy Director of ACAD and co-lead author with Dr Julien Soubrier.
"Critically, however, these early studies hadn't included an extinct relative from the mainland, the fox-like Dusicyon avus. We extracted ancient DNA from six specimens of D. avus collected across Argentina and Chile, and made comparisons with a wide group of extinct and living species in the same family."
ACAD's analyses showed that D. avus was the closest relative of the Falkland Islands wolf and they separated only 16,000 years ago - but the question of how the island colonisation came about remained. The absence of other mammals argued against any land bridge connection to the mainland.
"The Eureka moment was finding evidence of submarine terraces off the coast of Argentina," says study leader Professor Alan Cooper. "They recorded the dramatically lowered sea levels during the Last Glacial Maximum (around 25-18,000 years ago)."
"At that time, there was a shallow and narrow (around 20km) strait between the islands and the mainland, allowing the Falkland Islands wolf to cross when the sea was frozen over, probably while pursuing marine prey like seals or penguins. Other small mammals like rats weren't able to cross the ice."
Tuesday, 23 August 2011
Missing lynx revealed at Weird Weekend 2011
Last week UK news site This is Devon covered an intriguing story that was also the subject of a talk at this year's Weird Weekend: the discovery of a 100-year-old specimen in a museum basement. We'll be featuring the video of the talk by Max Blake and Dr Darren Naish on this blog, but in the meantime here's the story:
The evidence includes the body of a lynx that was shot in mid-Devon just over a century ago, and leopard hairs and plaster-cast paw prints found recently near Woolfardisworthy that have been positively identified by independent experts.
Jonathan Downes, director of CFZ, told the Western Morning News: “We showed the lynx to various people last night and Dr Darren Naish and student Max Blake will be explaining its story this weekend. It is absolutely fascinating and it proves big cats are not a new thing.
“Max discovered the lynx in the archives of Bristol Museum and realised the importance of it,” said Mr Downes. “The animal was shot over 100 years ago in mid-Devon and that’s important because it proves there have been exotic cats in British countryside for many years.
“This animal has provenance – we have the date, time and the name of the person who presented it to the museum. This is a breakthrough,” he added saying that the stuffed body was of an animal smaller than a Euro-Asian lynx.
“It is within size the range normally equated with a Canadian lynx,” said Mr Downes. “So is it a Canadian lynx that was in captivity and escaped? Or it might be something even more interesting? There were no zoos in Devon that it could have escaped from at the time it was shot.
“The Devonshire naturalist HG Hurrell – a respected columnist for the Western Morning News – suggested that lynx were living in parts of Westcountry 50 years ago – as did Professor Bernard Heuvalmann, a noted academic. We know there were lynx living in Britain 1500 years ago, but could some have survived?”
Mr Downes said the next move was to have DNA extracted from the animal’s teeth or bone in an attempt to answer the riddle. CFZ also revealed that hairs found in woods near Woolfardisworthy had been positively identified as those of a leopard.
“We had them DNA tested by Durham University and they confirmed they were leopard. This is proof that there was, as of last summer, at least one leopard apparently wild in the woodlands of North Devon,” said Mr Downes.
“Local sightings have gone back an awful long time which implies there’s a population here. A few years ago a local farmer contacted us saying something had attacked one of his sheep – we saw the carcase and it had been killed in a fashion characteristic of a leopard.”
Given the subject matter and that the name of his organisation’s conference is “The Weird Weekend”, did Mr Downes fear that some people might question the seriousness of the evidence?
“We are not making outrageous claims,” he told the WMN. “We are not talking about sabre-toothed tigers or Loch Ness Monsters. That’s all nonsense. We are simply saying an animal can live here and adapt to the natural conditions.”
Labels:
bristol museum,
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