Ecuador's Lonesome George not so lonely

2012-11-22 22:31
Lonesome George is thought to be the last Pinta Island sub-species of Galapagos tortoise. (AFP)

Lonesome George is thought to be the last Pinta Island sub-species of Galapagos tortoise. (AFP)

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Quito - When Lonesome George, the last Pinta Island giant tortoise, died in June in the Galapagos, the world mourned the demise of a species. A report on Wednesday, however, says that George was not lonely after all.

There are at least 17 tortoises on the Galapagos Islands that have similar genetic traits to George, including some that may be from his same genus, the Galapagos National Park said in a statement.

George's 24 June death "does not represent the end of the Chelonoidis abingdonii species of Pinta Island giant tortoises," the statement said.

The Galapagos, located some 1 000km off Ecuador's coast, is an archipelago of 13 islands and more than 100 rocks and micro-islands. The islands were uninhabited when Europeans first visited in the 16th century, and today has a population of around 25 000.

Lonesome George, who was believed to be 100 years old when he died, was discovered on Pinta Island in 1972 at a time when tortoises of his type were believed to be extinct.

Research conducted with Yale University experts "identified nine females, three males and five youths with genes of the Pinta Island giant tortoise species," the statement read.

Researchers analysed more than 1 600 DNA samples taken in 2008 from tortoises living on the Wolf Volcano, on Isabella Island, to George's DNA and samples taken from the Pinta tortoise museum.

The results means that there could be "additional hybrids on the Wolf Volcano, and even individuals on Pinta that could be pure," the statement read.

Experts estimate there were once some 300 000 giant tortoises on the remote Pacific archipelago, but the species was decimated by whalers and pirates in the 18th and 19th century, who took them aboard their ships as fresh food and introduced new predators.

World Heritage Site

Today there are about between 30 000 and 40 000 tortoises of 10 different species on the Galapagos.

The Pinta and Floreana island tortoise, and other hybrids, were probably taken to Isabella Island in the 18th century by sailors who threw them overboard when they no longer needed the animals as food, the statement read.

Park authorities have known since 2008 of the existence of hybrids with Pinta Island tortoise genes, but National Park biologist Washington Tapia said in June that he believed there were not enough to bring back Lonesome George's species.

A more complete report on the find will be published in an upcoming issue of the journal Biological Conservation.

The Galapagos became famous when Charles Darwin visited in 1835 to conduct landmark research that led to his revolutionary theories on evolution.

The archipelago has been a Unesco World Heritage Site since 1978 for the unique plant and animal life found both on its land and in the surrounding sea.

In 2007, the organization declared the island chain's environment endangered due to the increase in tourism and the introduction of invasive species.

Read more on:    galapagos islands  |  equador  |  conservation  |  animals
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