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Creeping Yellow

Creeping Yellow
Photo Information
Copyright: Steve Reekie (LordPotty) Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1381 W: 144 N: 3872] (12503)
Genre: Protoctista
Medium: Color
Date Taken: 2005-02-27
Categories: Rain Forest
Exposure: f/2.8, 1/80 seconds
More Photo Info: [view]
Photo Version: Original Version
Theme(s): Slime moulds - Myxomycetes - Protoctista [view contributor(s)]
Date Submitted: 2007-08-12 7:58
Viewed: 4296
Points: 10
[Note Guidelines] Photographer's Note
Plasmodium of unknown slime mold.

I dug out this old shot from my days up at Pirongia for Felipe who is on a quest to categorise all the TN posts on true slime molds.
This is also a great example of how NOT to take macros up towards the light in a dark location.
(In Felipes last post 'Looking Up' he has given us an excellent tutorial on how to do it properly)

At one time the slime molds were thought to belong to the animal kingdom and at another to the kingdom of fungi, but they are now acknowledged to be a seperate kingdom entirely,that of Protoctista.
The yellow plasmodium you can see is the feeding stage of the slime mold.
It is a collction of flagellated cells fused together into a mass of protoplasm,which moves about feeding on bacteria,spores and other organic matter,much like an amoeba.
Plasmodium can be several hundred millimetres in diameter and can cover move 10mm within an hour.
This particular one was nearly a metre across and growing on the underside of a gigantic bracket fungus (Ganoderma applanatum).
When conditions are right the plasmodium will form one or more fruiting bodies,which may or may not produce spores,depending on the species.
I'm not sure about the droplets on this one,but the yellow blob on the left edge could well be a fruiting body forming.I hardly noticed it when I took the photo.
There are around 500 known species of true slime molds and many are brightly coloured like this yellow one.

(Information from Clives website 'The Hidden Forest')

bobcat08, extramundi, haraprasan, Matt-Bird has marked this note useful
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ThreadThread Starter Messages Updated
To batu: Big bracket fungusLordPotty 1 08-12 21:03
To haraprasan: Suggestion.extramundi 2 08-12 18:54
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Critiques [Translate]

Hi Steve,

Pfffoe!! What's that!!!!!!!!!! My first ractio then I saw the thumbnail: : "Steve has made a painting". But no it's.........something out of the darkness. The underworld I suppose. But it's wonderful when you see the complete photo. Amazing Steve. How can it grow? Wonderful colors. Very sharp and a lot of details. I shall take a look on Clives website. Thanks for sharing this interesting species. Regards and TFS Bob

  • Great 
  • batu Gold Star Critiquer/Gold Star Workshop Editor/Gold Note Writer [C: 1079 W: 293 N: 4497] (16383)
  • [2007-08-12 8:32]
  • [+]

Hallo Steve,
thank you for posting the 'unusual' which is obviously not an easy object for a photographer. I always like to see NEW things at TN giving the chance to learn something as is the case here by the picture and your interesting note.
I would like to know the seize of the bracket fungus.
Best wishes, Peter

You are always too critic with yourself, I agree the exposure is not perfect, but the structure is very well seen.
Recently I saw in TV an experiment with this kind of yellow plasmodium. They made a sort of labyrinth for the plasmodium to grow with some rich food at the end. Several paths lead to the price. At first, the plasmodium growed through all possible paths, but when reached the food and discovered the shortest path to get it, the plasmodium retired quickly from the long paths and concentred all cells in the short way to the food :)
Does this demostrate some kind of "inteligence"? At least it demostrates Sime moulds are practical :D
Best regards, MF.

I just found this: http://www.riken.go.jp/lab-www/frontier-div/NEWSLETTER/feb2001/ameboid_e.htm

Hi Steve,
Very interesting and YES unusual subject. Great idea however and a very different pov. You really managed to get some fine details here.

Namastay Steve,
Sorry I am unable to understand what are these but the yellow veins looks very good to my eyes just like some egg of an ET from Alien movie. Color composition is excellent and good details. Thanks a lot for sharing.

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