Hormones may lead penguins to kidnapping
April 20, 2006
A French researcher says hormones might help explain why female emperor penguins that have lost a baby sometimes kidnap a chick from another penguin.
The snatching behavior -- seen briefly in the Oscar-winning movie "March of the Penguins" -- has long puzzled scientists.
"The kidnapping lasts for a few hours or a week at most," Olivier Chastel, a biologist at Paris's French National Center for Scientific Research, told National Geographic News. After that time the kidnapper penguin seemingly loses interest and abandons her stolen chick.
"The abandoned hungry chicks usually die from the cold or predation," said Chastel. "There is no clear evolutionary advantage. In other words the kidnapping practice doesn't seem to help chicks survive and therefore pass on their genes to the next generation."
However, NGN says a new study indicates a hormone that influences the penguins' parenting urges might be driving the birds to steal chicks.
Scientists detail that hypothesis in this week's Journal of Experimental Biology.
Copyright 2006 by United Press International
-
Engineers build first sub-10-nm carbon nanotube transistor
Feb 01, 2012 |
4.9 / 5 (31) |
30
-
Something old, something new: Evolution and the structural divergence of duplicate genes
Jan 31, 2012 |
4.6 / 5 (7) |
1
-
The hidden nanoworld of ice crystals: Revealing the dynamic behavior of quasi-liquid layers
Jan 30, 2012 |
5 / 5 (3) |
1
-
Stock market network reveals investor clustering
Jan 27, 2012 |
3.9 / 5 (23) |
8
-
Of microchemistry and molecules: Electronic microfluidic device synthesizes biocompatible probes
Jan 26, 2012 |
5 / 5 (1) |
0
More news stories
A frank discussion of the power law and linking correlation to causation
(PhysOrg.com) -- Michael Stumpf a mathematics professor at Imperial College in London, and Mason Porter a lecturer at Oxford have teamed together to write and publish a perspective piece in Science regarding the in ...
Feb 10, 2012 |
5 / 5 (5) |
10
|
Employers feel no love for unscrupulous practice of 'service sweethearting'
A new study led by two Florida State University marketing professors finds that some frontline service employees who are rewarded for hikes in customer loyalty and satisfaction also may engage in "service ...
Other Sciences / Economics & Business
Feb 10, 2012 |
3.3 / 5 (3) |
11
US workers are 'giving away the store,' costing firms billions
Nearly 70 percent of the nation's service employees give away free goods and services – from hamburgers to cable TV – costing companies billions of dollars a year, according to a groundbreaking study.
Other Sciences / Economics & Business
Feb 09, 2012 |
3.5 / 5 (4) |
10
New insights into how to correct false knowledge
The abundance of false information available on the Internet, in movies and on TV has created a big challenge for educators.
Other Sciences / Social Sciences
Feb 07, 2012 |
4.9 / 5 (7) |
9
|
Neanderthal demise due to many influences, including cultural changes: study
As an ice age crept upon them thousands of years ago, Neanderthals and modern human ancestors expanded their territory ranges across Asia and Europe to adapt to the changing environment.
Other Sciences / Archaeology & Fossils
Feb 07, 2012 |
4.4 / 5 (5) |
8
|
Latin America mining boom clashes with conservation
Latin America is experiencing a mining boom as prices rise fuelled by a hike in global demand, but the region is also being hit by a wave of violent protests, strikes and rallies by environmentalists.
Love a click away in Indonesia's Twitter Republic
He was a geeky kid from Yogyakarta, she a glamorous city girl in Jakarta. In a country with one of the world's most vibrant social networking scenes they fell in love on Twitter.
Walney offshore wind farm is world's biggest (for now)
(PhysOrg.com) -- The Walney wind farm on the Irish Sea--characterized by high tides, waves and windy weather--officially opened this week. The farm is treated in the press as a very big deal as the Walney ...
GPS court ruling leaves US phone tracking unclear
A US Supreme Court decision requiring a warrant to place a GPS device on the car of a criminal suspect leaves unresolved the bigger issue of police tracking using mobile phones, legal experts say.
Europeans protest controversial Internet pact
Tens of thousands of people marched in protests in more than a dozen European cities Saturday against a controversial anti-online piracy pact that critics say could curtail Internet freedom.
Europe stakes billion-dollar bet on new rocket
A pencil-slim rocket is scheduled to lift into space from South America on Monday, carrying a billion-dollar bet that Europe can grab a juicy slice of the market to place satellites in low orbit.
