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Sunday Night Movie: Driver Ants Mating

February 28, 2010 by myrmecos

A short clip from the BBC program “Ant Attack”

Driver ant males are astoundingly strange creatures. They are larger, more muscular, more exaggerated than most other male ants. The reason is likely linked to the behavior shown in the above video: males must first be accepted by a gauntlet of choosy workers.

A classic paper by Franks and Hoelldobler (1987) describes the theory. This preference of workers for bulkier males- and a corresponding slaughter of smaller or otherwise unsuitable ones- drives an evolutionary trajectory towards increasing monstrosity. It’s an ant version of the peacock’s tail.

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Posted in Ants, fun, Nature | Tagged BBC, Dorylus, Evolution | 3 Comments

3 Responses

  1. on February 28, 2010 at 6:27 pm JasonC.

    Wow. I watched the full show just yesterday! It was sort of slow though; I didn’t think it was actually exciting until when they started invading the termite nest.

    I nearly laughed when I saw how bulky the male was, really. Looked like if you took a male ant and infused its genes somehow with some scarab genes. It almost looks like it can’t fly.


  2. on March 2, 2010 at 10:26 am Caspar

    Hi Alex,
    the “sexual selection” scenario proposed by Franks & Hölldobler is plausible but there is also another, simpler explanation. Daniel Kronauer and Koos Boomsma suggested that males need to have a similar size as queens in order to be able to mate. Otherwise they would not be able to hold the queen during the copulation. Check out the paper
    http://www.springerlink.com/content/y24185726x4u2770/
    Cheers,
    Caspar


    • on March 2, 2010 at 6:44 pm myrmecos

      Thanks Caspar- I hadn’t seen that paper.



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