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Aldabra Giant Tortoise history

In the 1600s, Mauritius was colonized. Settlers from this country often traveled to the Seychelles islands, where four types of giant tortoises were common. The settlers often removed or killed the tortoises, resulting in the extinction of three of the four species. The only remaining species is the Aldabra Tortoise, which lives on a decidedly unfriendly island 700 miles away from Mauritius. The other three species were extinct by 1840. The Aldabra Tortoise was designated an endangered species in the late 1800s, one of the first animals ever to gain this protection. In 1971, an international airport was opened on the Seychelles Islands and it quickly became a popular tourist attraction. Because of the drastically improved economy, the Seychelles Government and the Royal Society of London decided to build a daughter colony in 1977. In 1978, 101 Aldabra Tortoises were tagged and monitored. Ninety-five of the tortoises were eventually released on Curieuse, an island near Mahe, that was designated a National park in 1979 by the Seychelles government. The tortoises adapted well to the island, but a follow up study conducted in 1986 by the Zoological Society of London found some disturbing things. For example, tourists were allowed to roam free on the island and often stood on the tortoises for pictures, which damaged the tortoises. They also left behind litter, hazardous to the tortoises and destroyed nesting areas. The researchers were able to find less than half of the tortoises that had originally been introduced to the island, and the number of hatchlings was very small. While they estimated that 400 tortoises should exist by that time, only 102 were found. They believe that poaching, theft and predation by feral cats and rats is the main cause of the high mortality rate. The most dangerous predator for the babies, are giant crab, which dig into the nests for the eggs. The society hopes to improve the conditions, with either more supervision or a well-managed tortoise nursery. In some areas such as Curieuse, tourists are still allowed to roam free near the tortoises. The good news is that today, because of the level of protection that the Seychelles government has instituted, Aldabra populations are growing.

The Aldabra Tortoise was classified as Geochelone gigantea, today it is more frequently classified as Aldabrachelys gigantea and less frequently as Dipsochelys elephantina.

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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Aldabra_Giant_Tortoise".
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