PHILADELPHIA, March 31 (UPI) -- U.S. biologists have finished a study started in 1915, determining snail shells can significantly increase in size during a relatively short period of time.
Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body. The finding, ...
... wave exposure, which can affect not only shell shape but also size.
Why have snails gotten bigger? Within ... thicken and then, once defended against shell-crushing predators, grow in length to a size ...
... shell patterns that make beachcombing so popular.
"The model gives us a remarkable ability ... reactions among chemicals diffusing through the snail shell, is that it required different chemical reactions ...
... . Isotopic measurements performed on fossil land snail shells resulted in oxygen isotope ratios ... highly moisture-sensitive land snails.
Land snail shells are abundant and sensitive to environmental ...
Isotopic measurements performed on fossil land snail shells found in ancient soils on the subtropical eastern Canary Islands resulted in oxygen isotope ratios that suggest the Spanish archipelago off ...
Shape matters, even in hearing. Specifically, it is the shape of the cochlea - the snail-shell-shaped organ in the inner ear that converts sound waves into nerve impulses that the brain deciphers - ...
... considered to be the limit of this wetter region.
The researchers measured the isotopic composition of snail shells taken from two sites in the fossil river channels and from the shells of planktonic ...
... with so-called spiral microlasers, which have a tiny notch that resembles the outer opening of a snail shell. Certain experiments have shown that light tends to propagate in a single direction from ...
... ears of many animals. They are within the ear's cochlea, which is the spiral, snail-shell-shaped cavity where incoming sound vibrations are converted into nerve impulses and sent to the ...
... between collagen fibers.
His idea came from examining how crystals form in nature. "Eggshells and abalone [sea snail] shells are very strong and intriguing," Dr. Tay says. " ...
... by throwing the food chain out of whack. Terrapin are voracious snail eaters who use their strong jaws to break through snail shells.
"Our work along the Cedar Point marsh on ...
... to be the first time managed to measure and record the elusive electrical activity of the type II neurons in the snail-shell-like structure called the cochlea. And it turns ...
