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Tag: "lizards" at biology news

Falling ants glide back to trunk to avoid dangers of forest floor

...hrough the forest, from flying squirrels to flying lizards and frogs, and even ?frightening as it sounds ?sna...nd gliding creatures ranging from hummingbirds and lizards to moths and bees. "Apparently, it's fairly common among a lot of tropical canopy ants." Yanoviak, ...

Small species back-up giant marsupial climate change extinction claim

...vered 44 species, ranging from land snails, frogs, lizards and small mammals to giant wombats and kangaroos including many species previously unknown to have occurred in the Darling Downs fossil record. The results suggest that the extinction of Darling Downs megafauna was caused by a massive shift in clima...

Researchers reveal secrets of flying snakes

...t. All other gliders, such as flying squirrels or lizards or gliding birds, maintain a constant wing structure, unlike these flying snakes that whip their bodies through the air. "Although all of these other animals may make small adjustments while gliding, none are as dramatic, rhythmic and dynamic as the ...

Geckos: It's not always about sex

...n. There, Kearney, Autumn and Rebecca Wahl put the lizards through their paces on a state-of-the-art lizard treadmill. As the geckos walked in the lab at Lewis & Clark, the researchers precisely controlled the lizard's speed, body temperature, and measured how much energy the four-footers used to walk. W...

Newly discovered birdlike dinosaur is oldest raptor ever found in South America

...uch as the abundant burrowing snakes, mammals, and lizards that have been discovered alongside Buitreraptor. The remarkable dinosaur was discovered in northwestern Patagonia about 700 miles southwest of Buenos Aires. Although Buitreraptor is rather small, the paleontological team needed 10 days to chisel ou...

Missing fossil link 'Dallasaurus' found

...urner's fossil as the origin of an extinct line of lizards with an evolutionary twist: a land-dwelling specie...arth warmed and the seas rose, small land-dwelling lizards took to the oceans and developed increasing levels of seagoing capabilities, and over 30 million yea...

Nice guys do finish first in lizards' evolutionary race

...d altruism in evolutionary biology. Side-blotched lizards spend their year on earth looking to reproduce, an...udy's lead author) has been studying side-blotched lizards of the Central Valley of California, funded by the National Science Foundation. Males break down int...

Pressured by predators, lizards see rapid shift in natural selection

... a population's needs change. In a study of island lizards exposed to a new predator, the scientists found th...ree and exhaustively counted, marked, and measured lizards on all 12 isles. Anolis sagrei spends much of its time on the ground, but previous research has s...

LSU professor discovers new species

... said Austin. "One of the best methods for finding lizards in the rainforest is to look under logs. We found two individuals of the new species under one log and two more under another." With more than 15 years of fieldwork experience behind him, Austin knew immediately that he had found a new species. After...

Why do cold animals make bigger babies?

...ds (Sceloporus undulatus), which revealed that the lizards in colder environments produce larger offspring than lizards in warmer environments. So why do animals in colder climates produce larger offspring? One theory...

Lizards 'shout' against a noisy background

...ross, UC Davis researchers have found. Male anole lizards signal ownership of their territory by sitting up ...exaggerated the movements of the lizards. Anole lizards are interesting to evolutionary biologists because different species are found on different islands ...

Despite their heft, many dinosaurs had surprisingly tiny genomes

... moderately sized genomes, akin to those of living lizards and crocodilians. We aren't sure about the genomes of the long-necked sauropods yet." Organ and Edwards say the clear-cut dichotomy in dinosaur genomes is likely due to different amounts of repetitive and non-coding DNA in the two groups' genetic ...

Invasion of the island bats

...tudies of birds of the South Pacific and Caribbean lizards uncovered at least three separate cases of island-to-continent colonization. Then again, these few instances could be interpreted as the exceptions that prove the rule, anomalies easily explained by the unique circumstances of each case. Analysis...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

A comprehensive survey of lizards on islands around the world has confirmed what isl...imate change may have devastating consequences for lizards and other animals that inhabit islands because their ecosystems are much more sensitive than those o...

Study shows lizard moms dress their children for success

..., Santa Cruz, have found that female side-blotched lizards are able to induce different color patterns in the...the researchers reported that female side-blotched lizards give an extra dose of the hormone estradiol to their eggs in certain social circumstances. The extra...

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