Wednesday, October 1, 2014

Ephemeroptera

Photo Credit: Neil Rettig ©John Downer Productions

Mayflies fascinate me. Even their classification, Order Ephemeroptera. It comes from the Greek word ephermoros, literally meaning "living or lasting for one day." and from which we also get ephemeral.

Their greatest tragedy is not that they live for but one day-- well, half an hour to twenty-four hours depending on the species. They actually live a quite a long time, because of the nymph stage of their lifespans: a year, but even two to three years in some species. Compare this to the life-span of some other insects, such as the monarch butterfly (one month larva, 4-52 weeks adult) or even the short-lived dragonfly (two years nymph, 16 weeks adult).

After completing the nymph stage, the mayfly becomes a sub-imago; essentially an undeveloped and sexually premature adult that will undergo one more molting to reach the adult form.

(This might be fanciful, but I don't think it's an accident that the adult form from the mayfly is called "imago", the latin word for "image." The original meaning is "a likeness." And the pre-adult stage: sub-imago, something even less. )

In a huge cloud of insects, mayflies from the sub-imago stage rise out of the water simultaneously, and after maturing, they mate and die simultaneously. I hope to be able to see this wonder one day. Below is one of my favorite (and highly informative) videos of the phenomenon, as well as a poem.



4 comments:

  1. I'm very curious how you came up with the post title--but your poem is very clever. The parallel between sections of the poem and life stages of a mayfly was clever, and ironic. Yesterday I saw a small brown mayfly on the back of my house, despite the cold winds, weakly clinging to the wall surface. When did you last see a mayfly?

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  2. I love the photo, and the video was very informative and interesting. I like your poem a lot, Nicholas. Cool images in the fourth part (and nice allusion to "Ozymandias" in the third).

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  4. You guys, both, Even and Nicholas, why are you not in bug bio?
    I loved this blog post, maybe especially because we have a bio exam tomorrow, and mayflies is one of the orders we need to learn. So this was a great review of vocab and life cycle for me:D Thank you!
    I agree with Even, I really liked the poem and how it's divided into life phases. The part about the soldier was interesting, and the rhyme in the last section made it feel like a rap. The video was also cool. A few weeks ago Mr. Stone actually showed us something very similar in class. The Mayflies' life cycle is quite fascinating.
    Great blog post!

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