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Myxomycete Dictydium cancellatum

 
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Walter Piorkowski



Joined: 14 Aug 2006
Posts: 684
Location: South Beloit, Ill

PostPosted: Wed Jul 09, 2008 1:12 pm    Post subject: Myxomycete Dictydium cancellatum Reply with quote



Image 1 - Cluster of emerging Dictydium fruiting bodies.



Image 2 - Dictydium fruiting bodies in transition.

Image 1- 20mm Canon Macro lens at f/5.6, 1) 30mm tube
Horizontal F.O.V. 4.0 mm
Image stack, 51 images at .001 inch increments
Diffused dome, fiber optic illumination

Image 2 -20mm Canon Macro lens at f/5.6, 1) 30mm tube
Horizontal F.O.V. 4.0 mm
Image stack, 66 images at .001 inch increments
Diffused dome, fiber optic illumination

Canon 10D
Combine ZM and Photoshop processing.

Although one of my reference guides considers Dictydium cancellatum to be a common myxomycete this is my first encounter with it. I was most fortunate again to capture it upon it’s emergence. It’s appearance at that stage bears no resemblance to its spore release phase which can be seen if you like in the my post of this subject in the Photography through the Microscope gallery. Image 2 shows the result hours later of the sporangia having become stalked. Further changes will transform the ball shaped portion into the distinctive cage like structure of the sporangium that makes identification easier than most others.

Walt
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Ken Ramos



Joined: 27 Jul 2006
Posts: 7079
Location: lat=35.4005&lon=-81.9841

PostPosted: Wed Jul 09, 2008 6:34 pm    Post subject: Reply with quote

Both of these are great there Walt, especially the first. I have yet to come across this species, though the mountains are rich in slime mould populations. Wonder why? Maybe I am just not looking hard enough I suppose. Think
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lauriek
Site Admin


Joined: 25 Nov 2007
Posts: 2404
Location: South East UK

PostPosted: Thu Jul 10, 2008 2:17 am    Post subject: Reply with quote

Agreed, that first one is superb - looks like drops of oil! Nice lighting...
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Walter Piorkowski



Joined: 14 Aug 2006
Posts: 684
Location: South Beloit, Ill

PostPosted: Thu Jul 10, 2008 6:57 am    Post subject: Reply with quote

These are really small Ken and easily overlooked. I actually found them scanning a log for remnants of stemonitis. If you would be so kind, take another look at image #2 in the upper right corner. There is a small bush or coral like entity there that I have been trying to get a good image of at much higher magnifications. Have you ever seen one? It appears to be fungal in nature with spore capsules at the tips that resemble pharmacutical capsules.

Thanks lauriek, people always prefer the fresh fruiting bodies. It was a bear to light and I have to work fast with these specimens as they deteriorate in less tha 10 minutes.

Walt
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