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Meet Diego, the macho tortoise

/ 01:14 AM September 15, 2016
STILL AT IT Diego, a tortoise of the endangered “Chelonoidis hoodensis” subspecies from Española Island, is kept at a breeding center at Galapagos National Park on Santa Cruz Island in the Galapagos archipelago, located some 1,000 kilometers off Ecuador’s coast. AFP

STILL AT IT Diego, a tortoise of the endangered “Chelonoidis hoodensis” subspecies from Española Island, is kept at a breeding center at Galapagos National Park on Santa Cruz Island in the Galapagos
archipelago, located some 1,000 kilometers off Ecuador’s coast. AFP

PUERTO AYORA, Ecuador—He’s over 100 years old, but his sex life is the stuff of legend. Diego the Tortoise is his species’ version of the ladies’ man, and his exploits have helped save his kind from extinction.

Diego, a Galapagos giant tortoise, has fathered an estimated 800 offspring, almost single-handedly rebuilding the species’ population on their native island, Española, the southernmost in       the Galapagos Archipelago.

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“He’s a very sexually active male reproducer. He’s contributed enormously to repopulating the island,” said Washington Tapia, a tortoise preservation specialist at Galapagos National Park.

Diego is a Chelonoidis hoodensis, a species found in the wild only on Española.

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Biodiversity

The island is one of the oldest in the Galapagos, the Pacific archipelago made famous by Charles Darwin’s studies of its breathtaking biodiversity.

Around 50 years ago, there were only two males and 12 females of Diego’s species alive on Española, and they were too spread out to reproduce.

Diego has done more than any other tortoise to turn that around—with the help of his mates, of course.

The dominant male of the three assigned to repopulate Española lives at a tortoise breeding center on Santa Cruz Island, one of the largest in the Galapagos.

He shares his enclosure with six females, his partners in the task of saving their species. Tough work, but some tortoise has to do it.

Mysterious Casanova

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On a cloudy morning with chilly wind, Diego timidly peeks his head out from his thick shell, then slowly plods toward some leaves for breakfast.

“Look, look! He came out. How pretty,” said a young girl as she looked on.

Diego weighs about 80 kilograms (175 pounds), is nearly 90 centimeters (35 inches) long and 1.5 meters (5 feet) tall if he really stretches his legs and neck.

He has a mysterious, globe-trotting background to go with his reputation as a Casanova.

Diego was found at San Diego Zoo—hence his name—after

Chelonoidis hoodensis was identified as a species and an international campaign was launched to find more of the rare tortoises.

“We don’t know exactly how or when he arrived in the United States. He must have been taken from Española sometime between 1900 and 1959 by a scientific expedition,” Tapia said.

The 40% dad

After being located at the zoo in California, Diego was brought back to the Galapagos in 1976 and put in the captive breeding program.

Little did scientists realize just how effective he was, until six years ago.

“We did a genetic study and we discovered that he was the father of nearly 40 percent of the offspring released into the wild on Española,” Tapia said.

In all, around 2,000 tortoises have been released on the small island. Thanks to the program, the species is no longer facing extinction.

Extinct

“I wouldn’t say (the species) is in perfect health, because historical records show there probably used to be more than 5,000 tortoises on the island. But it’s a population that’s in pretty good shape—and growing, which is the most important,” Tapia said.

Of the 15 species of giant tortoise known to have originated in the Galapagos, three have gone extinct—victims of 18th-century pirates who plundered the islands’ fragile ecosystem.

Diego’s species has also been introduced on the island of Santa Fe, where a genetically similar one, Chelonoidis spp, disappeared more than 150 years ago.

Not all critically endangered tortoises rise to the challenge as Diego has.

Hopes for another threatened species, Chelonoidis abingdoni, faded when its last known survivor died in 2012 at more than 100 years old.

Known as Lonesome George, he had refused for years to breed in captivity. AFP

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