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Old 05-06-2007, 06:01 AM
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Galapagos Lonesome George may not be last tortoise of his kind

Mon Apr 30, 8:10 PM ET

CHICAGO (AFP) - The Galapagos tortoise known as Lonesome George may lose his ranking as the world's rarest living creature now that scientists have discovered he has a distant cousin, according to a study released Monday.
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George, who has stubbornly refused to mate with the female tortoises from a related subspecies placed in his pen, has been considered the last of his kind since his discovery in 1971.

His wrinkled face became a symbol of how human activity leads to extinction, and the meter-wide, 88-kilo tortoise has long held the Guinness Book of World Records title of "rarest living creature."

Three of the 14 species of Galapagos tortoises - which helped Charles Darwin develop the theory of natural selection - have become extinct because of hunting and competition for food from goats introduced in the 1950's.

The loss of George - the first tortoise found on the island of Pinta since 1906 - would have brought that number to four.

"Even after 35 years, Lonesome George seems uninterested in passing on his unique genes and has failed to produce offspring," said lead author Michael Russello of the University of British Columbia Okanagan who began working with the tortoises as a postdoctoral fellow at Yale.

"The continuing saga surrounding the search for a mate has positioned Lonesome George as a potent conservation icon, not just for Galapagos, but worldwide."

Researchers now hope that another tortoise from George's subspecies - Geochelone abingdoni - may be living the neighboring Galapagos island of Isabela.

A multinational team headed by researchers at Yale has identified a tortoise which has half his genes in common with George and is "clearly a first generation hybrid between the native tortoises from the islands of Isabela and Pinta."

They hope that with further testing they will be able to find a genetically pure Pinta tortoise among the 2,000 tortoises living on Isabela and start a breeding program.

"These findings offer the potential for transforming the legacy of Lonesome George from an enduring symbol or rarity to a conservation success story," said Yale biologist Jeffrey Powell.

It will take a team of about 20 people around two months to do an exhaustive sampling and transmitter-tagging of the tortoises on the volcano and then to find the potential Pinta tortoises and bring them in captivity.

The study was published in the May 1 edition of Current Biology
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Old 05-07-2007, 08:59 PM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

Wow, I didnt know he was the last of his kind. Maybe they can extract his sperm somehow and artificially inseminate it lol.
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Old 05-07-2007, 09:24 PM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

Interesting read... but please name your source.

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Old 05-07-2007, 09:34 PM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

there was an article like it in Nature... and i think there is pretty much the same article on msnbc... but those are just for cross referencing.
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Old 05-07-2007, 09:39 PM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

I'd like to add about how he was getting somewhere until the lady that was helping him ran out of time..lol..this part of an article is interesting

The tragedy of loveless George the tortoise | the Daily Mail
But in the main, George's health is mostly tip-top. For a tortoise in his hundreds, he should be in his sexual prime. Yet George has steadfastly refused to mate. This has not been for the want of trying.

First, females from a different giant tortoise species were put into his enclosure.

He showed no interest, even when the number of females were increased to orgiastic proportions.

The lack of activity in his corral led to all sorts of speculation.

"Visit Lonesome George, the world's oldest gay living turtle", touted one American travel agent.

Then, for four months in 1994, Swiss zoology graduate Sveva Grigioni made it her task to encourage his libido.

She spent days with him in the enclosure, trying to gain his trust.

"He was very shy at the beginning," she explains.

"He is such a big animal and he was so afraid."

To encourage him to loosen up, she smeared herself with female tortoise hormones, or pheromones, a sort of "come-and-get-me" signal.

And she succeeded where nobody has before or since. First she confirmed his sexual anatomy was normal.

Then she got him to show signs of sexual activity.

"Day by day, he became more interested in the females," she wrote. "He started to try copulation but it was like he didn't really know how."

Just as Grigioni and George were getting somewhere, her time at the research centre came to an end.

And George returned to sexual torpor, the state he remains in today as the biggest tourist attraction of the Galapagos.

It would, of course, be wrong if George was simply being used as a commercial ploy to get more funding for the Charles Darwin Research Station on the Galapagos or as a mere bait to attract more visitors who did not fully comprehend his uniqueness and rarity.

But Dr Nicholls believes the research centre is the only chance for George to perpetuate his species.

"Getting George to reproduce is, frankly, a long shot," he admits. "But that doesn't mean we shouldn't try."

"One day, George will give up the tortoise ghost.

"His remains must stay at the research station. Even in death it is here that he will have his greatest audience."

I feel the same about Timothy, and still visit his grave under the purple wisteria at Powderham Castle.

Curiously, like George, he did not mate - unless you accept his attempts to mount the late Lord Devon's wartime helmet.

Lonesome George: The Life And Loves Of The World's Most Famous Tortoise by Henry Nicholls is published by Pan Paperback at £7.99.
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Old 05-10-2007, 12:16 AM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

Quote:
Originally Posted by toker View Post
Interesting read... but please name your source.
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I got it off of Yahoo news.
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Old 05-11-2007, 04:12 AM
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Re: Galapagos Lonesome George may not be last tortoise of his kind

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