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Rats Being Eradicated from Galapagos Islands

Rodents & Mice

A helicopter is to begin dropping nearly 22 tons of specially designed bait, developed by Bell Laboratories, as part of an effort eradicated non-native rodents from the famous island.

| November 15, 2012

Ecuadorean authorities say the unique bird and reptile species that make the Galapagos Islands a treasure for scientists and tourists must be preserved — and that means the rats must die, hundreds of millions of them, according to an article on NBCMiami.com.
 
A helicopter is to begin dropping nearly 22 tons of specially designed bait on an island Thursday, launching the second phase of a campaign to clear out by 2020 non-native rodents from the archipelago that helped inspire Charles Darwin's theory of evolution. The bait, developed by Bell Laboratories in the United States, is contained in light blue cubes that attract rats but are repulsive to other inhabitants of the islands. The one-centimeter-square cubes disintegrate in a week or so.

The invasive Norway and black rats, introduced by whalers and buccaneers beginning in the 17th century, feed on the eggs and hatchlings of the islands' native species, which include giant tortoises, lava lizards, snakes, hawks and iguanas. Rats also have depleted plants on which native species feed.

The rats have critically endangered bird species on the 19-island cluster 600 miles (1,000 kilometers) from Ecuador's coast.

"It's one of the worst problems the Galapagos have. (Rats) reproduce every three months and eat everything," said Juan Carlos Gonzalez, a specialist with the Nature Conservancy involved in the Phase II eradication operation on Pinzon island and the islet of Plaza Sur.

Phase I of the anti-rat campaign began in January 2011 on Rabida island and about a dozen islets, which like Pinzon and Plaza Sur are also uninhabited by humans.

The goal is to kill off all nonnative rodents, beginning with the Galapagos' smaller islands, without endangering other wildlife. The islands where humans reside, Isabela and Santa Cruz, will come last.

Previous efforts to eradicate invasive species have removed goats, cats, burros and pigs from various islands.

Source: http://www.nbcmiami.com
 

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