Quantcast
Last updated on April 21, 2014 at 9:11 EDT

Latest Insect winter ecology Stories

23c3f221d253f774828bd84bdb9b49d01
2009-12-15 07:24:15

Scientists have identified a novel antifreeze molecule in a freeze-tolerant Alaska beetle able to survive temperatures below minus 100 degrees Fahrenheit. Unlike all previously described biological antifreezes that contain protein, this new molecule, called xylomannan, has little or no protein. It is composed of a sugar and a fatty acid and may exist in new places within the cells of organisms. "The most exciting part of this discovery is that this molecule is a whole new kind of antifreeze...

cd0be91faf926fc87e6778aff2c490b11
2009-11-24 08:48:11

Water expands when it freezes. Anyone who has ever left a can of soda or bottle of water in the freezer too long has witnessed this first hand. So how do plants and animals survive severe temperatures? Insects exposed to subzero temperatures can adapt to the extreme climate to survive freezing temperatures, but until now, antifreeze molecules had not been isolated from freeze-tolerant animals. The NSF-supported study, published in the November 24 issue of Proceedings of the National Academy...