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UCLA study sheds new light on island evolution
Evolution of genetically distinct species that live exclusively on land can be slowed by over-water dispersal following tropical storms, according to a UCLA study. Lizards long thought to be evolving independently on Caribbean Islands in fact exchange genetic material, suggesting classic theories of island evolution need an overhaul. (2003-12-03)

Researchers find a pattern in evolution of lizard groups
Biologists at Washington University in St. Louis have proposed a general pattern among groups in the timing of evolutionary diversification. (2003-08-14)

Introduced marine species get larger in the invaded region
The transport of species outside their native region through human activities often has a dramatic impact on the ecosystems into which these species are introduced and on the surrounding economies. The consequences of introduction are less recognized. In Ecology Letters, August, Grosholz found most marine invertebrate species increase in size in non-native regions, with little evidence of decreases found in other taxa. These size increases may have implications for the impact on native ecosystems. (2003-08-13)

Biologists find unexpected rapid evolution in Caribbean lizards
Biologists at Washington University in St. Louis have documented unprecedented levels of speciation and diversification in Caribbean Anolis lizards. The discovery is completely unexpected and challenges the way evolutionary biologists think of evolution. (2003-07-14)

Cooperation between unrelated male lizards adds a new wrinkle to evolutionary theory
Most examples of cooperative behavior in animals involve cooperation between genetically related individuals, which is explained by the theory of (2003-06-19)

Human lymph disease could tail off thanks to gecko
Many lizards shed their tails, and then regrow them, as a survival mechanism - and now researchers from the University of Adelaide in Australia believe understanding this act could also help them treat a lymphatic condition in humans. (2003-01-15)

Insect yields clues to evolution of species
Studies of a California insect, the walking stick, are helping to illuminate the process of evolution of new species, according to research published in this week's issue of Nature. (2002-05-22)

Lizards and salamanders may use lungs to hear, study says
Certain species of salamanders and lizards can actually hear through their lungs, according to a new study at Ohio State University. The research extends previous studies showing that some types of earless frogs and toads use their lungs to pick up sound vibrations. (2002-03-04)

Proliferation of Argentine ants in California linked to decline in coastal horned lizards
The pesky Argentine ant, which has proliferated throughout the coastal regions of California, invading homes and displacing native species of ants, is also contributing to a sharp decline in the state's population of coastal horned lizards. (2002-02-26)

World's smallest lizard discovered in Caribbean
The world's smallest lizard has been discovered on a tiny Caribbean island off the coast of the Dominican Republic. The newly discovered species not only ranks as the smallest lizard, but it also is the smallest of all 23,000 species of reptiles, birds, and mammals. (2001-12-03)

World's smallest lizard discovered in the Caribbean
The world's smallest lizard has been discovered on a tiny Caribbean island off the coast of the Dominican Republic. The newly discovered species not only ranks as the smallest lizard, but it also is the smallest of all 23,000 species of reptiles, birds, and mammals, according to a paper published in the December issue of the Caribbean Journal of Science. (2001-12-03)

Lyme disease ticks follow rivers in midwest
Ticks capable of carrying the bacterium that causes Lyme disease have been slowly migrating along rivers in the Midwest, a trend that may help predict future areas at risk for the disease, say researchers from the University of Illinois, Urbana. They report their results today at 50th Annual Meeting of the American Society of Tropical Medicine and Hygiene in Atlanta. (2001-11-14)

Society for Vertebrate Paleontology to hold annual meeting in Montana in October
The world's largest group of scientists that studies dinosaurs and other prehistoric creatures will meet in Bozeman, Mont., Oct. 3-6 to talk about the latest discoveries. (2001-09-20)

Mysteries of the stumpy lizard revealed
Can you imagine giving birth to a child the size of a six-year-old? Or not being able to eat or breathe properly for the last third of pregnancy? Welcome to the unique world of the Australian stumpy-tailed lizard! (2001-09-02)

Dinosaurs had a "rostral nostril," says Science researcher
New research suggests that the fleshy nostril of dinosaurs may have been perched far forward within the bony nostril, not placed towards the back of the bony nostril as previously suggested. (2001-08-02)

Study shows top predator makes prey population vulnerable in catastrophe
Biologists at the University of California, Davis, and Washington University in St. Louis have completed a unique study of lizard populations on tiny islands in the Bahamas that shows what happens when a natural catastrophe devastates both predator and prey species. On islands devoid of predators, the prey species rebound more quickly. (2001-07-11)

Study illustrates diversification, speciation in biological "islands"
Lizard species on large Caribbean islands are more numerous than those on smaller islands because there is more evolution going on. Jonathan Losos, biology professor at Washington University in St. Louis, has shown that the bigger the island, the faster species proliferate and diversity. His study complements the famed (2000-12-13)

Game of life allows all mating strategies
Biologists at Cornell University and University of California at Santa Cruz say highly competitive mating strategies follow rules of the (2000-12-04)

Venomous dinosaurs really existed
The poison-spitting dinosaurs in Jurassic Park were pure fiction. But now the first evidence that venomous dinosaurs may really have existed has been revealed from a tooth found in Mexico with a groove down the back, like the venom- delivering teeth of poisonous snakes. (2000-11-14)

Fragmented Forest, Fragmented Food
A team of scientists working in Austrailia has discovered that forest fragments may not offer enough food for some songbirds. (2000-06-05)

New fossil snake with legs, reported in Science
A 95 million year-old fossil snake with legs may overturn a current theory that places the origin of snakes in the sea. The fossil is the second snake with limbs from the site, and researchers now think that these two snake species are closely related to modern snakes like the python and boa. (2000-03-16)

Lizards do really learn to recognize people
Despite their cold-blooded demeanor, lizards can form personal relationships with people. Researchers in Pennsylvania have shown that iguanas recognize their human handlers and greet them differently, compared with strangers. (1999-06-30)

Sustainable Harvest Of Caiman Falls Short Of Potential
Sustainable harvest is touted as a way for wildlife to pay for its own conservation. But how successful is it really? In the case of the caiman harvest in Venezuela, there's lots of room for improvement, say John Thorbjarnarson of the Wildlife Conservation Society in Bronx, New York and Alvaro Velasco of PROFAUNA in Caraca, Venezuela. (1999-03-30)

A Real Smart Asp: Snakes Show Surprising Ability To Learn
A University of Rochester neuroscientist has found that snakes have a much greater capacity for learning than most earlier studies have indicated. The scientist tests snakes not in a maze but in an arena that more closely resembles a situation they're likely to encounter in the natural world. (1999-02-05)

New Study Offers A Twist On Evolution Of Animal Postures
A new Ohio University study of how alligators walk is putting an unusual twist on the theory that animals with erect postures, such as birds and mammals, evolved from crawling on their bellies to walking erect. (1998-11-06)

New Studies Shed Light On Facial Features Of Popular Dinosaurs
Studies by an Ohio University paleontologist suggest that contrary to popular belief, Tyrannosaurus rex probably didn't have lips and Triceratops most likely didn't have cheeks. The assertion could have implications for scientists who study these extinct animals and the toy manufacturers, movie set designers and artists whose recreations of dinosaurs now seem inaccurate. (1998-10-01)

Study 'Gone With The Wind' Provides Stellar Ecological Example
Biologists at Washington University in St. Louis and the University of California, Davis received a windfall from Hurricane Lili in 1996. Through a quirk of fate, the scientists saw one study metamorphose into a completely different one that graphically reveals how natural forces can tip the balance of nature. (1998-07-30)

Hurricane's Perfect Timing Brings A Scientific Bonanza
Hurricane Lili was a stroke of extraordinary fortune for three American scientists -- a catastrophe that created in hours the natural conditions they had speculated about for 20 years. The resulting information may answer long-standing questions about catastrophic impacts on ecosystems, and could help conservationists plan better ways to preserve natural habitat. (1998-07-30)

Caribbean Lizards Evolve Independently
A genetic family tree has helped biologists at Washington University in St. Louis to discover that remarkably similar lizard communities have evolved independently on different Caribbean islands. The study reveals a perfect example of convergence of entire communities. Each component of the community on the different islands is identical. (1998-03-26)

Scientists Discover Smallest Frog
A new frog discovered in Cuba by scientists funded by the National Science Foundation is the smallest in the Northern Hemisphere, and is tied for the world record with the smallest frog in the Southern Hemisphere, says a biologist from Pennsylvania State University in a paper published in the December issue of the journal Copeia (1996-12-18)

Scientists Discover Smallest Frog
A new frog discovered in Cuba is the smallest in the Northern Hemisphere and is tied for the world record with the smallest frog in the Southern Hemisphere, say a team of biologists from Cuba and Penn State. The one-centimeter-long frog also is the smallest tetrapod. (1996-11-25)

Evolution On The Fast Track
A dramatic discovery, reported by a University of Wisconsin scientist in the Nov. 21 Nature, shows that altering a handful of genes can quickly send an animal down the road to becoming a new species. The finding helps explain biological diversity, and seasonal and geographic variation in animal appearance (1996-11-20)

Page 13 of 13 | 512 Results
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