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View Diary: The Daily Bucket: Why does the Horse Lubber cross the road? (82 comments)

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  •  Are such high concentrations considered swarming? (8+ / 0-)

    I was wondering when I discovered that swarm behavior is what distinguishes grasshoppers from locusts.

    From wiki

    There is no consistent taxonomic distinction between locust and grasshopper species; the basis for the definition is whether a species forms swarms under intermittently suitable conditions.

    The plural of anecdote is NOT data

    by Dr Arcadia on Sat Oct 05, 2013 at 12:46:13 PM PDT

    [ Parent ]

    •  I read that. Now I'm curious (9+ / 0-)

      Browsing Wiki

      Locusts are the swarming phase of the short-horned grasshoppers of the family Acrididae
      Research at Oxford University has identified that swarming behavior is a response to overcrowding. Increased tactile stimulation of the hind legs causes an increase in levels of serotonin.[5] This causes the locust to change color, eat much more, and breed much more easily. The transformation of the locust to the swarming variety is induced by several contacts per minute over a four-hour period.[6]
      So, I think that the event in 1959 could be considered a swarm of locusts.

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