Thursday, February 4, 2010

Water Movements Can Shape Fish Evolution

Studies done at the University of Minnisota's Institute of Technology discovered that the hydrodynamic environment of fish can shape the evolution of their physical form and their swimming style. Two sets of robotic fish were made. The first set was shaped like a mackerel but one swam like a mackerel and the other swam like an eel. The other set was built like an eel but one beat its tail like a mackerel and the other the other swam like an eel. They then placed the fish at standing starts and raced them and recorded the results.
The results indicated that the shape and swimming style of fish were based off of the speeds at which they swam, further giving hints to the evolutionary histories of particular species.

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