Daphnia

Images made through a microscope. All subject types.

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Olympusman
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Daphnia

Post by Olympusman »

Image

57 shots in Zerene drunk on 10% grain alcohol (the daphnia, not me). Immobilized but the heart was still beating.
Sequential drive mode in an Olympus E-420.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Litonotus
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Post by Litonotus »

nice (: what did you do to avoid vibrations when stacking?
my FB page

I'm looking for the the extemely rare V-IM magnification changer for the E800 scope. If you have seen a listing or have one for sale please let me know.

vasselle
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Post by vasselle »

superbe cliché :smt038

carlos.uruguay
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Post by carlos.uruguay »

Nice photo Michael

Olympusman
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Daphnia stacking

Post by Olympusman »

Vasselle,
I shoot in Sequential Drive Mode at about 3 frames per second -- it is the same as a motor drive in the 35mm days.
I hold down the shutter release on the USB remote control and focus through the stack while the drive is running so I can capture the whole stack in just a few seconds.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

actinophrys
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Post by actinophrys »

Hi Michael,
If I might offer an ID, this looks like it is a Ceriodaphnia, which have no tail spine and a rounder head. I figured it might be worth pointing out because of another difference, which is not always easy to see but your image shows very well: the markings on the carapace. In most Daphnia they form a grid, while here they are a hexagonal tiling. I think that's actually what the name Ceriodaphnia refers to, from Greek for honeycomb.

Jacek
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Post by Jacek »

Very nice

Olympusman
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Daphnia

Post by Olympusman »

Thank you all for your kind comments and to Actinophrys for the ID. A note on this recent pond dip.
I have another local pond that last summer was rich in desmids and midge larvae and damselfly nymphs. Latest dip -- nothing. However, the banks and shallows were absolutley black with tadpoles for two feet outward, so I suspect they have been eating all of the micro fauna and flora. I mean, not a single microsterias when last summer they were cluttering up my samples?
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

piermicro
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Post by piermicro »

Very nice.

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