Tuesday, June 4, 2013

A Fairly Annoynig Example of Evolution


Cockroaches are a versatile group of insects.  They can go weeks without food, tolerate 15 times the radiation that humans can and are resistant to many pesticides.
  Cockroaches have historically relied heavily on glucose as a food source but in the span of the last few decades, many cockroaches have evolved  to reject glucose because it is so commonly used as a bait in insect traps.  Researchers have found that in many modern cockroaches it stimulates the neurons that sense bitter foods, making glucose unattractive as a food. Because these glucose-averse cockroaches have become so common, traps that use glucose as a bait have become ineffective.

An article about this topic can be found here.

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