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Tag: "lizard" at biology news

Study shows lizard moms dress their children for success

...said. Lancaster began by treating side-blotched lizard eggs with an array of different hormones. That rev...ents in breeding enclosures, each holding one male lizard and three females. The numbers of orange- and yellow-throated females in each enclosure were experim...

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

...ing. Jetz and Buckley gathered 643 estimates of lizard abundance from around the world for their survey, ...umbers of predators and competitors accompany high lizard densities on islands across the world. The two biologists concluded that an average acre of mainlan...

UBC researchers reveal dwarf aquatic plants' hidden ancestry

..., this is like finding something you thought was a lizard is actually a living dinosaur." Graham led the project with researchers from the Royal Botanic Gardens in Sydney, Australia, the University of Zurich, Harvard University, and the University of California, Davis. "This provides a major piece i...

Lizards 'shout' against a noisy background

...ing a colorful throat pouch. They can spot a rival lizard up to 25 meters away, said Terry Ord, a postdoctoral researcher at UC Davis who is working with Judy Stamps, professor of evolution and ecology. The lizards' signals need to be strong enough for a rival to see, but not vivid enough to say "eat me"...

LSU professor discovers new species

...cal sciences, recently discovered a new species of lizard while conducting field research in Borneo. Aust...mbined to confirm the original hypothesis that the lizard was, in fact, an entirely new species. Austin spent the entire summer of 2006 in New Guinea, his g...

Pressured by predators, lizards see rapid shift in natural selection

... Losos and colleagues studied populations of the lizard Anolis sagrei on minuscule islands, or cays, in th...ntroduced to six of these cays a larger, predatory lizard (Leiocephalus carinatus) commonly found on nearby islands and known as a natural colonizer of small ...

Nice guys do finish first in lizards' evolutionary race

... discovered follow "rock-paper-scissors" cycles of lizard lust. Orange-throated lizards are the big bullies, roaming far from home to raid female territories and mate. They generally beat blue-throated lizards, the stay-at-home dad types. The blues stick close to home to protect females and have a buddy s...

Lizard 'third eye' sheds light on evolution of color vision

Published in the March 17 issue of Science, their lizard study describes how the "side-blotched" lizard's ... photoreceptors as well as the lateral eyes of the lizard - those on the sides of its head. But when the lizard's third eye sees green light, the green pigmen...

Missing fossil link 'Dallasaurus' found

...exas. They describe Dallasaurus, a three-foot long lizard who lived 92 million years ago in the shallow seas and shores of what was then a stretch of Texas mostly under water, and also used the fossil to better understand the mosasaur family tree. Polcyn and Bell painstakingly pieced together an understandi...

Weapon performance determines mating success in the collared lizard

...klahoma State University) use the eastern collared lizard (Crotaphytus collaris ), a sexually dimorphic lizard in which the jaws of males function as a weapon in fights, to test the hypothesis that weapon perfor...

Geckos: It's not always about sex

... lizards through their paces on a state-of-the-art lizard treadmill. As the geckos walked in the lab at Lewi...a similar study of another kind of parthenogenetic lizard from the deserts of the United States showed the opposite pattern." Added Autumn: "If there was an ...

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

...mp voluntarily," Kaspari said. "The last view of a lizard chasing a Cephalotes ant may be that ant dropping toward the ground and spiraling back to the tree, safe from both the litter below and the predator above." All told, Yanoviak has dropped about 60 species of ants from the treetops, and has found som...

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