Image of the Humped Bladderwort.

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An image taken with a microscope shows a cross section of the trap of a humped bladderwort (Utricularia gibba). Those spiky discs are friendly algae that hitch a ride inside. Photo: Igor Siwanowicz
We get a lot of press releases about photo contests, but this winning image from the Olympus BioScapes Imaging Competition (which I didn’t even know existed) stood out for a few reasons:
1. The image itself is really neat.
2. What’s actually happening in the image is also neat:
Apparently this is like a microscopic aquatic version of a Venus’ flytrap — it sucks little microinvertebrates into its trap a millisecond after they trigger its hairs.
3. It’s called a humped bladderwort, or Utricularia gibba if you wanna get technical. It’s a flowering plant that grows in ponds and lakes all over the world. (Earnest bladderwort explainer video.)
4. Speaking of technical, the process is interesting. According to press-release jargon, “Igor Siwanowicz, a neurobiologist at the Howard Hughes Medical Institute’s Janelia Farm Research Campus … magnified the plant 100 times using a laser scanning confocal microscope and used cellulose-binding fluorescent dye Calcofluor White to visualize the cell walls of the plant.”
Siwanowicz began photographing about 10 years ago, and has a much larger collection of similar images — which you won’t regret checking out.
See and read more via And The Winner Is: The Humped Bladderwort : The Picture Show : NPR.

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