News tagged with monarch butterflies
Female monarch butterflies on 30-year decline in eastern North America
Sep 23, 2009 |
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(PhysOrg.com) -- Female monarch butterflies in eastern North America have significantly declined over the past 30 years, a new study by a University of Georgia researcher reveals.
Genetic basis for migration
Mar 31, 2009 |
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Scientists studying Eastern North American monarch butterflies (Danaus plexippus) have uncovered a suite of genes that may be involved in driving the butterflies to migrate towards Mexico for the winter. Their research, publis ...
Search results for monarch butterflies
Tree-eating bugs threaten Monarch butterfly in Mexico
Nov 21, 2009 |
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The mysterious Monarch butterfly, which migrates en masse annually between Canada and Mexico, is now facing a new peril: another insect thriving in Western Mexican forests.
Booming Monarch Butterfly Population Faces Obstacles, Expert Says
Biology /
Sep 06, 2006 |
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Monarch butterfly followers can expect an unusually large population of the winged insects this season they make their way to their winter home in Mexico, but a University of Kansas professor says there may be trouble ahead.
Migrating monarch butterflies 'nose' their way to Mexico
Sep 24, 2009 |
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The annual migration of monarch butterflies from across eastern North America to a specific grove of fir trees in Mexico has long fascinated scientists who have sought to understand just how these delicate ...
Monarchs fly south for the winter
Sep 12, 2005 |
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As many as 300 million monarch butterflies are now flying south from Canada and the northern United States to winter in Mexico and Southern California.
Butterfly payload to launch Nov. 16 on space shuttle
Space & Earth / Space Exploration
Nov 10, 2009 |
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When NASA's space shuttle Atlantis launches for the International Space Station on Nov. 16 it will carry a University of Colorado at Boulder butterfly experiment that will be monitored by thousands of K-12 ...
Researchers find natural section favors parasite fitness over host health
Biology /
May 12, 2008 |
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Why do parasites harm their hosts? Classic evolutionary theory predicts that parasites become more virulent because they must transmit themselves between hosts, yet scientists have found little data to support this idea, ...
British butterflies need summer boost
Biology /
Apr 25, 2008 |
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British conservationists said 2007 was the worst summer for butterflies in more than 25 years.
Monarch butterflies with a heavy load
Jul 24, 2009 |
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(PhysOrg.com) -- Scientists have succeeded for the first time in fitting monarch butterflies with a radio transmitter and in tracking them from an aircraft over a long distance on their flight northwards during ...
Continental plan to protect the monarch's migratory journey
Jun 28, 2008 |
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Canada, Mexico and the United States are joining forces to protect and conserve the Monarch butterfly, which has become a symbol of North America's shared environment.
Monarch butterflies help explain why parasites harm hosts
Biology /
May 14, 2008 |
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It’s a paradox that has confounded evolutionary biologists since Charles Darwin published On the Origin of Species in 1859: Since parasites depend on their hosts for survival, why do they harm them?
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