woolybanana Posted May 13, 2011 Share Posted May 13, 2011 It seems that these cicadas only come out every 13 or 17 years and then hibernate underground. What possible logic can Nature have seen in this?http://uk.news.yahoo.com/us-cicadas-invade-south-13-sleep-152022967.html Link to comment Share on other sites More sharing options...
Alex H Posted May 13, 2011 Share Posted May 13, 2011 A couple of suggestions here http://en.wikipedia.org/wiki/Magicicada and loads of info here http://www.magicicada.org/magicicada_xix.phpincluding"Periodical cicadas achieve astounding population densities, as high as 1.5 million per acre""Magicicada population densities are so high that predators apparently eat their fill without significantly reducing the population (a phenomenon called "predator satiation"), and the predator populations cannot build up in response because the cicadas are available as food above ground only once every 13 or 17 years." Link to comment Share on other sites More sharing options...
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