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Latest Hystricognath rodents Stories

Rodents In The Rainforest Risk Their Lives To Eat
2013-12-18 12:22:08

Smithsonian Tropical Research Institute Hungry rodents that wake up early are much more likely to be eaten than rodents getting plenty of food and shut-eye, according to new results from a study at the Smithsonian Tropical Research Institute in Panama. The study was published in the journal Animal Behavior, early online edition, Dec., 2013. Scientists equipped agoutis, common rainforest rodents, and ocelots, their feline predators, with radio collars and tracked them 24/7 via an...

Fossilized Teeth Point To World’s Oldest Grasslands In Chilean Andes
2012-07-25 05:14:14

Brett Smith for redOrbit.com - Your Universe Online Two newly discovered and ancient rodent species, including the earliest known chinchilla, may have lived in the world´s oldest grasslands about 32.5 million years ago. The discovery and subsequent analysis of the teeth by an international team of researchers, which was published in the journal American Museum Novitates, supports previously collected evidence indicating that these animals once inhabited an open and dry environment...

2012-03-26 09:30:50

From miniature elephants to monster mice, and even Hobbit-sized humans, size changes in island animals are well-known to science. Biologists have long believed that large animals evolving on islands tend to get smaller, while small animals tend to get bigger, a generalization they call "the island rule." A new study by researchers at Duke University and the National Evolutionary Synthesis Center in Durham, NC puts that old idea to the test in island and mainland rodents. "Some of the...

Researchers Discover 41 Million Old Rodent Fossils
2011-10-12 11:51:13

Researchers have discovered the oldest rodent fossils yet along the Ucayali River near Contamana, Peru. The fossils are comprised of the tiny teeth of a mouse-and rat-sized animal that lived at least 41 million years ago. These fossils are about 10 million years older than all previous rodent discoveries made. "This really pushes back the date of the first South American rodents," said Darin Croft, an anatomy professor at Case Western Reserve University School of Medicine, Cleveland,...

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2011-08-05 09:08:17

2 new species discovered Two new rodent fossils were discovered in the arid highlands of southern Bolivia by researchers from Case Western Reserve University School of Medicine and Universidad Aut³noma Tomás Frías. The larger of the two rodents, named Mesoprocta hypsodus, probably looked something like a guinea pig on stilts, said Darin Croft, an anatomy professor at Case Western Reserve. The smaller, Quebradahondomys potosiensis, was a spiny rat. An online article...

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2010-08-25 20:08:16

Wild porcupine might be a tasty treat in countries around the world, but populations of the spiky rodent are coming under threat in Vietnam due to illegal hunting.Research from the University of East Anglia, published in Biological Conservation, has shown that the consumption of the Southeast Asian porcupine (Hystrix brachyura) as a speciality food is having a devastating effect on wild populations.Overhunting has been cited as the porcupine's greatest threat, and the 1990s saw a reported...

2009-01-02 14:57:21

A sudden influx of porcupines to Mountain Village, Colo., has caused more than $100,000 in damage to area landscaping, area residents say. Mountain Village homeowner Vicki Irwin said while porcupines have been routine visitors to the home rule municipality, recent arrivals have taken to gnawing bark off scores of area spruce trees, The Denver Post said Friday. I've seen porcupines around her for years, but they've never been so aggressive, she said. It's all just a mystery. Mountain Village...

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2008-01-17 00:00:00

Uruguayan scientists have uncovered fossil evidence of the biggest species of rodent ever found. This huge creature scurried across wooded areas of South America about 4 million years ago, when the continent was not connected to North America. The research conducted by Andres Rinderknecht and Ernesto Blanco was published Wednesday in this week's issue of biological research journal, Proceedings of the Royal Society B. According to the scientists, a herbivore, the beast may have been...

2007-05-22 08:44:39

DEAL ISLAND, Md. -- Federal trappers charged with ridding Blackwater National Wildlife Refuge of nutria have a new mission now that the invasive rodent is clear from the refuge - rooting it out from the rest of the Eastern Shore. The nutria, a rodent brought to Maryland in the 1940s, has proven a danger to marsh grasses on the Eastern Shore. The South American rodents gobble up marsh grasses from the roots, leaving the land vulnerable to erosion. The rodents destroyed 8,000 acres of marshland...


Latest Hystricognath rodents Reference Libraries

Armored Rat, Hoplomys gymnurus
2012-07-17 14:40:46

The armored rat (Hoplomys gymnurus) is the only species within the Hoplomys genus. It is native to Latin America, with a range that extends from northern Honduras into northwestern Ecuador. It prefers a habitat at altitudes of up to 2,600 feet. It resides in burrows that can be up to 6.6 feet in length, and these burrows are typically located near a water source. The armored rat bears spines across its back, resembling a porcupine, and indeed, they are more related to the porcupine than...

Lowland Paca, Cuniculus paca
2012-06-29 13:23:09

The lowland paca (Cuniculus paca) is a rodent that can be found in tropical and sub-tropical areas of the Americas. Its range extends from East-Central Mexico into northern Argentina. It is sometimes called the spotted paca, or simply the paca, but in most of Central America and Mexico, it is known as tepezcuintle, and it has many other native names within its range. This rodent derives its name from the tupi word for “animal”, which can also mean “alert” or “awaken”. The...

Silvery Mole Rat, Heliophobius argenteocinereus
2012-05-29 12:42:44

The silvery mole rat (Heliophobius argenteocinereus), also known as the silky mole rat or silvery blesmol, is a mole rat that appears in many areas of Africa including southern Kenya, central Malawi and Mozambique, parts of southeastern Zaire, and throughout Tanzania. The only subspecies listed under the genus Heliophobius, the silvery mole rat is an unsociable animal, and very aggressive. Little is known about its behaviors and ecology, but it prefers to inhabit savannah areas and woodlands...

Greater Cane Rat, Thryonomys swinderianus
2012-05-16 12:22:36

The greater cane rat (Thryonomys swinderianus) is one of two species of cane rats found in Africa. They prefer to reside in reed beds or riverbanks south of the Saharan Desert. They have adapted well to urbanization and will also live on plantations. The nocturnal greater cane rat lives in small groups that are led by one alpha male and will make their burrows underground or in grasses. The diet of this cane rat consists of cane plants and grasses. When frightened, the greater cane rat will...

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2007-06-25 10:17:34

The Degu, Octodon degus, is a small caviomorph that is native to Chile. It is sometimes called Brush-tailed Rat (although not related to the rat family) and is also called the Common Degu, to distinguish it from other members of the genus Octodon. Degus are closely related to chinchillas and guinea pigs. Like Chinchillas, Degus can breed any time of the year. At 90 days, they too have a very long gestation period compared to other rodents. Due to this long pregnancy, degu pups are born fully...

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Word of the Day
tessitura
  • The prevailing range of a vocal or instrumental part, within which most of the tones lie.
This word is Italian in origin and comes from the Latin 'textura,' web, structure.