At depths of 26 to 39 feet, the scientists collected dead coral from five different locations. At two sites where removing coral is prohibited, the scientists collected man-made sampling devices that had been left in the water for one year. Combined, the coral and devices had a surface area of just 6.3 square meters (20.6 square feet), yet 525 different species of crustaceans were found living on them.
Crustaceans collected for the survey were only those the scientists could see, and ranged from 0.2 to 1.9 inches long. All animals from which DNA was sequenced were preserved so they could be examined later by taxonomists.
"Given the complexity and extent of the world's coral reefs, the survey covered only a very limited depth and habitat range," said Plaisance. "And yet we have so many more species than we ever expected."
Present estimates of species diversity in reefs are 600,000 to more than 9 million species worldwide. "We cannot give a new estimate today, but we may be able to in a few years," Plaisance said. Using man-made sampling structures at some 50 sites around the world, Plaisance is now working with the Smithsonian and the National Oceanographic and Atmospheric Administration on another survey that will include all of the many organisms that live on coral reefs.
John Gibbons | EurekAlert!
Waste in the water – New purification techniques for healthier aquatic ecosystems
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Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
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Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
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Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
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