Posts Tagged ‘fish’
Earth & Environment - Nov 11, 2009 18:09 - 1 Comment
Pacific white sharks stick to familiar waters
STANFORD (US)—The white shark may be the ultimate loner of the ocean, cruising thousands of miles in a solitary trek, but a team of researchers has discovered that white sharks in the northeastern Pacific Ocean have separated themselves into a population genetically distinct from sharks elsewhere in the world. (more…)
Earth & Environment, Health & Medicine - Oct 26, 2009 12:07 - 0 Comments
Zebrafish do it. Why can’t we?
U. MICHIGAN (US)—Biologists long have marveled at the ability of some animals to re-grow lost body parts—newts regrow legs and zebrafish re-grow fins—and even repair damaged heart and eye tissue. Now researchers have discovered that some of the same genes underlie the process in different types of tissues. (more…)
Best of 2009 - Oct 22, 2009 14:09 - 12 Comments
BEST OF 2009: Fish switch it up to get the blues
EMORY (US)—Researchers have discovered the first example of an animal deleting a molecule to change its visual spectrum, linking evolution to functional changes and the possible environmental factors driving them. (more…)
Earth & Environment - Oct 13, 2009 18:46 - 0 Comments
Cuckolds with evolutionary know-how
YALE (US)—Evolutionary biology theory predicts that males usually won’t invest a lot of time raising offspring when there is a good chance they are not the fathers. Researchers have found a notable exception—a male fish in the Mediterranean that is more likely to be paternal when there is grave doubt about the offsprings’ parentage. (more…)
Science & Technology - Oct 5, 2009 12:34 - 0 Comments
Flip of switch illuminates cell function
UC BERKELEY (US)—A new way to select and switch on one cell type in an organism using light has helped answer a long-standing question about the function of one class of enigmatic nerve cells in the spinal cord. (more…)
Earth & Environment - Oct 1, 2009 11:44 - 1 Comment
Electric fish come equipped with dimmer
TEXAS-AUSTIN (US)—Electric fish communicate by quickly plugging special channels into their cells to generate electrical impulses, according to new research. And, like all good consumers, they conserve energy by turning their electrical signals up and down. (more…)
Earth & Environment - Aug 19, 2009 14:56 - 0 Comments
Global fisheries launch a comeback
The cowcod rockfish population collapsed in the 1980s but is now showing signs of recovery. (Courtesy: Stanford University)
Earth & Environment - Jun 8, 2009 13:50 - 1 Comment
Don’t let these fish be the ones that got away
Ocean core sampling could help identify the cause of forage fish depletion.
Earth & Environment, Health & Medicine - Apr 23, 2009 14:13 - 2 Comments
Toxic ticks spread illness as planet warms
YALE (US)—A new study suggests fighting infectious disease could prove more challenging on a warming planet. Scientists have made a link between climate and the severity of Lyme disease in certain regions of the United States. Rising temperatures may lead to stronger, more persistent strains of the tick-borne illness, according to the findings. (more…)
Science & Technology - Mar 12, 2009 14:28 - 0 Comments
Tags shed light on dwindling fish populations
CORNELL (US)—New advances in tagging technology are allowing marine scientists to collect real-world data on the health of fish populations directly from the source—the fish themselves.
