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Last updated on April 19, 2014 at 18:42 EDT

Latest Todd LaJeunesse Stories

DNA Analysis Can Help In Classifying Single-celled Algae
2012-09-20 12:28:58

For nearly 260 years -- since Carl Linnaeus developed his system of naming plants and animals -- researchers classified species based on visual attributes like color, shape and size. In the past few decades, researchers found that sequencing DNA can more accurately identify species. A group of single-celled algae -- Symbiodinum -- that live inside corals and are critical to their survival -- are only now being separated into species using DNA analysis, according to biologists....

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2010-02-16 12:52:24

Penn State researchers and their international collaborators have discovered a diversity of corals harboring unusual species of symbiotic algae in the warm waters of the Andaman Sea in the northeastern Indian Ocean.  "The existence of so many novel coral symbioses thriving in a place that is too warm for most corals gives us hope that coral reefs and the ecosystems they support may persist "” at least in some places "” in the face of global warming," said the team's leader,...

2009-09-10 12:53:00

A U.S.-led scientific team has found a rare photosynthetic alga might be able to save certain colonies of coral from the damaging effects of global warming. The team, led by Pennsylvania State University Assistant Professor Todd LaJeunesse, evaluated corals -- and the photosynthetic algae that live inside their cells -- before, during and after a period in 2005 when global warming caused Caribbean Ocean sea-surface temperatures to rise. Symbiodinium trenchi is normally a rare species of...

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2009-09-10 08:20:00

Scientists take advantage of 'experiment of nature' to discover new insights into coral bleaching A rare opportunity has allowed a team of scientists to evaluate corals--and the essential, photosynthetic algae that live inside their cells--before, during, and after a period in 2005 when global warming caused sea-surface temperatures in the Caribbean to rise. The team, led by Penn State biologist Todd LaJeunesse, found that a rare species of algae that's tolerant of stressful environmental...