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RogelioMoreno
Joined: 20 Nov 2009
Posts: 1524
Location: Panama
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 Posted: Sun Jul 01, 2012 7:29 pm Post subject: Water flea - Polarized (image added) |
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Here is a set of a specimen that looks like water flea and has some kind of birefrigent.
10x polarized:
20x polarized
Rogelio
Last edited by RogelioMoreno on Thu Jul 05, 2012 3:51 am; edited 2 times in total |
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abpho
Joined: 17 Aug 2011
Posts: 691
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| Posted: Sun Jul 01, 2012 7:30 pm Post subject: |
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| Tripping. Crazy images. Thanks |
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Jacek
Joined: 02 Oct 2011
Posts: 893
Location: Poland
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| Posted: Sun Jul 01, 2012 9:23 pm Post subject: |
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 wow |
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Charles Krebs
Joined: 01 Aug 2006
Posts: 4074
Location: Issaquah, WA USA
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| Posted: Sun Jul 01, 2012 9:28 pm Post subject: |
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Very bizarre!
Looks like it overdosed on vitamin C 
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hayath
Joined: 03 Apr 2012
Posts: 32
Location: Bangalore, India
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| Posted: Mon Jul 02, 2012 2:38 am Post subject: |
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| Crazy colors and details..loved these |
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arturoag75
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Cactusdave
Joined: 09 Jun 2009
Posts: 963
Location: Bromley, Kent, UK
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| Posted: Mon Jul 02, 2012 2:59 am Post subject: |
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It does indeed look like something birefringent has crystallized on the surface of this Cladoceran in thin plates. A calcium salt perhaps? Fascinating and attractive. Do you have a DIC or brightfield image that might help with ID and working out what the structure is that's producing the optical effect.
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Litonotus
Joined: 20 Jun 2011
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Location: Poland
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| Posted: Mon Jul 02, 2012 4:14 am Post subject: |
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I love #2 and #4 images (:
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RogelioMoreno
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harisA
Joined: 03 Jul 2011
Posts: 149
Location: Greece
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| Posted: Mon Jul 02, 2012 9:03 am Post subject: |
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| amazing pictures. |
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pwnell
Joined: 18 Dec 2009
Posts: 551
Location: Surrey, Canada
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| Posted: Mon Jul 02, 2012 10:17 am Post subject: |
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| That is remarkable. I will remember to play with the polarizer next time I find a water flea. |
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Cactusdave
Joined: 09 Jun 2009
Posts: 963
Location: Bromley, Kent, UK
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| Posted: Mon Jul 02, 2012 11:10 am Post subject: |
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Thanks for the link. My thoughts would be that as water evaporates under the coverslip, salts, probably calcium carbonate, precipitate from solution in the water probably as soluble calcium bicarbonate, in the form of thin transparent birefringent plates. The rough surface of the waterflea carapace would provide suitable crystallization nuclei from which the crystallization process would be initiated.
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RogelioMoreno
Joined: 20 Nov 2009
Posts: 1524
Location: Panama
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| Posted: Mon Jul 02, 2012 12:31 pm Post subject: |
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| Cactusdave wrote: | | Thanks for the link. My thoughts would be that as water evaporates under the coverslip, salts, probably calcium carbonate, precipitate from solution in the water probably as soluble calcium bicarbonate, in the form of thin transparent birefringent plates. The rough surface of the waterflea carapace would provide suitable crystallization nuclei from which the crystallization process would be initiated. |
Normally I inspect the sample without the coverslip if I find something interesting then I cover it, I remember to have seen the thin birefringent plates on the surface of the waterflea carapace before putting the coverslip.
Thank you for your comments.
Rogelio
Last edited by RogelioMoreno on Mon Jul 02, 2012 12:34 pm; edited 1 time in total |
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RogelioMoreno
Joined: 20 Nov 2009
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Location: Panama
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| Posted: Mon Jul 02, 2012 12:33 pm Post subject: |
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harisA and Waldo,
Thank you for your comments.
Rogelio |
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discomorphella
Joined: 01 Oct 2006
Posts: 291
Location: NW USA
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| Posted: Mon Jul 02, 2012 12:34 pm Post subject: |
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Thing o' beauty. Are we sure that the birefringent structures are completely external? Could they be some kind of fungal hyphae that have enough of a layered structure to provide sufficient birefringence to generate the effect? I admit they don't look exactly like any fungal structures I've ever seen before, but they do have a sort of "bud-like" or segmented structure. Really unique and beautiful.
David |
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