New giant rat species discovered
Monday, September 07 2009 @ 09:29 PM EDT
Contributed by: jkr
LONDON, England (CNN) -- Scientists have discovered a new species of giant rat in a remote rainforest in Papua New Guinea.
Measuring 82 centimeters (32.2 inches) from nose to tail and weighing around 1.5 kilograms (3.3 pounds), the species is thought to be one of the largest rats ever to be found.
The discovery was made by a team from the BBC Natural History Unit inside the crater of Mount Bosavi -- an extinct volcano in the Southern Highlands province of Papua New Guinea.
"This is one of the world's largest rats. It's a true rat, the same kind you find in the city sewers," said Kristofer Helgen, a biologist from the Smithsonian National Museum of Natural History, who was part of the expedition team.
Initial examinations of the rat -- provisionally named the Bosavi woolly rat -- suggest that it belongs to the Mallomys -- a genus of rodents in the muridae family which are the largest living species of rodent.
In 2007, a similar species of giant rat was found in Foja Mountains in Papua New Guinea's Mamberamo Basin.
The team of scientists which made the new discovery included experts on bats, birds, mammals and reptiles found a number of new species.
George McGavin, a Research Associate at the Oxford University Museum of Natural History and The Department of Zoology of Oxford University told CNN: "It's hard to be sure exactly how many new species we have found, but it is more than 30.
"To find new species of insects in this region isn't uncommon, but we found sixteen new frog species, one new bat species and at least three new fish, and this giant bloody rat -- the size of a cat. Amazing!"
McGavin said the inside of the crater -- which he says measures around three kilometers in diameter -- was spectacular.
"The animals inside this crater were unafraid of humans, pretty much because they hadn't seen them very much," McGavin said.
Most local inhabitants, McGavin explained, tend to hunt outside the crater. "They don't really go into the crater to hunt because it's such a trek up and back down from it."
The newly discovered rats aren't the world's largest rodent species. Native to South America, capybaras -- which look more like hairy pigs than rats -- weigh in at around 55 kilograms and can be up to 1.5 meters long.