09 Jun 2010
Tags: agricultural pesticides, ‘colony collapse disorde, Cell Phones, Chandigarh’s, claimed, climate change, collapse, Current Science, Disappearance, electropollution, environment, Europe, genetically modified, hives, Honey Bees, Honeybee, mobile telephones, Neelima Kumar, North America, phenomenon, Punjab University, Scientists, Ved Prakash Sharma
The growing use of mobile telephones is behind the disappearance of honey bees and the collapse of their hives, scientists have claimed. Their disappearance has caused alarm throughout Europe and North America where campaigners have blamed agricultural pesticides, climate change and the advent of genetically modified crops for what is now known as ‘colony collapse disorder.’ Britain has seen a 15 per cent decline in its bee population in the last two years and shrinking numbers has led to a rise in thefts of hives.
Now researchers from Chandigarh’s Punjab University claim they have found the cause which could be the first step in reversing the decline: They have established that radiation from mobile telephones is a key factor in the phenomenon and say that it probably interfering with the bee’s navigation senses.
They set up a controlled experiment in Punjab earlier this year comparing the behavior and productivity of bees in two hives – one fitted with two mobile telephones which were powered on for two fifteen minute sessions per day for three months. The other had dummy models installed.
01 Jun 2010
Tags: Cerro del Pueblo, Coahuila, Coahuila desert, Coahuilaceratops magnacuerna, Dinosaur, Fossils, herbivore, jumbled duck-bill dinosaur, Longest Horns, Mexico, Newly, North America, Paleontologists, skeletons, species, Uncovered, US Gulf Coast, Utah Museum of Natural History
A group of US paleontologists said Friday it has unearthed a new species of dinosaurs standing some six feet tall and weighing up to 4.5 tonnes, with the longest horns of all.The 72-million-year-old herbivore, now named Coahuilaceratops magnacuerna, has two large horns above its eyes measuring up to an impressive four feet (1.22 meters) long — the largest of any other species, providing fresh insight into the history of western North America.
Scientists uncovered fossils belonging to both an adult and a juvenile of the rhino-sized tubby creature at the Cerro del Pueblo Formation in Coahuila, Mexico. It measured about 22 feet (6.7 meters) long as an adult, standing six to seven feet (1.8 to two meters) tall at the shoulder and hips.”We know very little about the dinosaurs of Mexico, and this find increases immeasurably our knowledge of the dinosaurs living in Mexico during the Late Cretaceous,” said the study’s lead author Mark Loewen, a paleontologist with the Utah Museum of Natural History.
His team is to release a book next week detailing the find, which took place during expeditions in 2002 and 2003 in the Coahuila desert. The study was funded by the National Geographic Society and the University of Utah.When dinosaurs lived in this corner of Mexico, it was a lush, humid estuary where ocean water mixed with fresh water from rivers, similar to the US Gulf Coast today.
28 May 2010
Tags: Alligator Snapping Turtle, Chinese, Chinese Lake, Dinosaur, ecological system, Jining Fishing Bureau, lake, North America, outhern China's Anhui, Rare, Sun Yongcheng
A fisherman in China was surprised after catching this striking creature, which looks like a cross between a turtle and a dinosaur. The man discovered the alligator snapping turtle, which is not native to the country, in Weishan Lake, in southern China’s Anhui province.
The species is only native to North America and was probably someone’s pet before being dumped in the lake, the local fishing department said. The creature’s alien status meant that it could have posed a danger to the local ecological system, they added.
Fisherman Sun Yongcheng said he was surprised when he netted the alligator turtle, which measures 76cm long and 30cm wide and weighs 7kg.
02 Mar 2010
Tags: 145 million, 99 million, Brooks Britt, Colorado, concrete saws., Dinosaur, Dinosaur National Monument, Discovered, discovery, DNM, Fossils, jackhammers, Jim Kirkland, journal, Lower Cretaceous, Naturwissenschaften., North America, Paleontologists, Rare, sauropods, Science, science journal, species, Utah Rock, Utah-Colorado border, Years, Young University
Fossils of a previously undiscovered species of dinosaur have been found in slabs of Utah sandstone that were so hard that explosives had to be used to free some of the remains, scientists said Tuesday. The bones found at Dinosaur National Monument belonged to a type of sauropod — long-necked plant-eaters that were said to be the largest animal ever to roam land.
The discovery included two complete skulls from other types of sauropods — an extremely rare find, scientists said.The fossils offer fresh insight into lives of dinosaurs some 105 million years ago, including the evolution of sauropod teeth, which reveal eating habits and other information, said Dan Chure, a paleontologist at the monument that straddles the Utah-Colorado border.
“You can hardly overstate the significance of these fossils,” he said.Of the 120 or so known species of sauropods, complete skulls have been found for just eight. That’s mostly because their skulls were made of thin, fragile bones bound by soft tissue that were easily destroyed after death.
26 Feb 2010
Tags: Andy Davis, Butterflies, COSTA RICA, elongated wings, endangered phenomenon, enhance flight, Environmental, Evolution, Evolved, female monarch butterflies, Hawaii, insect species, Long-Distance Migration Shapes Butterfly Wings, migratory, monarch migration, National Science Foundation, non-migratory, North America, Odum Associate, Odum School of Ecology, PUERTO RICO, Sonia Altizer, South Florida, Uga, University of Georgia, Warnell School of Forestry and Natural Resources
A University of Georgia study has found that monarch butterflies that migrate long distances have evolved significantly larger and more elongated wings than their stationary cousins, differences that are consistent with traits known to enhance flight ability in other migratory species.
07 Feb 2010
Tags: Amur Leopard, Andalusia, Bengal tigers., Black Lion, China, Europe, Fujian, golden tabby tiger, golden tiger, Iberian Lynx, Kruger National Park, Maltese Tiger, North America, Oklahoma Zoo, Sir Henry Layard, South Chinese tiger, strawberry tiger, The World’s Rarest Cats, Timbavati Game Reserve, White Lion
The 21st century is marked not only by new technologies but also by an ever growing number of extinct and endangered animals. Apart from the extinct animals we will never see, these rare felines are so few since they are either threatened by loss of habitat or they have suffered from rare color mutation. Take a look at the rarest animals in the world!
The Maltese Tiger
The Blue tiger was reported mostly from the Fujian Province of China, being characterized by a bluish fur with dark stripes. The Maltese tigers have been reported as a subspecies of the South Chinese tiger, that is critically endangered. A blue tiger cub was born in 1964, in the Oklahoma Zoo, but died in its infancy. There are no blue tigers in zoos or private collections, and no known blue tiger pelts.
The Golden Tabby Tiger
The golden tiger has its white coat and gold patches due to an extremely rare colour variation caused by a recessive gene. Around 30 tigers are believed to exist in the world but many more are carriers of the gene. Records of the golden or strawberry tiger date back to the 1900s, in India. The first golden tiger cub born in captivity was in 1983 and this came from standard colored Bengal tigers.
07 Feb 2010
Tags: A Novel Way, Amy Casselman, Animals Sense, Animals Sense Earth’s Magnetic Field, Butterflies, Cryptochrome (Cry1) molecule, Higgins Family Professor of Neuroscience, Lauren Foley, Mexico, Monarch, North America, Robert Gegear, Steven Reppert, University of Massachusetts Medical School (UMMS)
Building on prior investigation into the biological mechanisms through which monarch butterflies are able to migrate up to 2,000 miles from eastern North America to a particular forest in Mexico each year, neurobiologists at the University of Massachusetts Medical School (UMMS) have linked two related photoreceptor proteins found in butterflies to animal navigation using the Earth’s magnetic field.
The work by Steven Reppert, MD, professor and chair of neurobiology at UMMS; Robert Gegear, PhD, research assistant professor of neurobiology; Lauren Foley, BS; and Amy Casselman, PhD, was recently described in the journal Nature.
The research team used fruit flies engineered to lack their own Cryptochrome (Cry1) molecule, a UV/blue-light photoreceptor already known to be involved in the insects’ light-dependent magnetic sense. By inserting into those deficient flies butterfly Cry1, a homolog of the fly protein, or the related butterfly protein Cry2, the researchers found that either form can restore the flies’ magnetic sense in a light-dependent manner, illustrating a role for both Cry types in magnetoreception. “Because the butterfly Cry2 protein is closely related to the one in vertebrates, like that found in birds which use the Earth’s magnetic field to aid migration,” states Dr. Reppert, “the finding provides the first genetic evidence that a vertebrate-like Cry can function as a magnetoreceptor.”