Pond Life: Ostracoda

Ostracoda: Cypris, a "bean animalcule".

These are very busy little creatures scuttling around amongst weed and pond debris. The species are difficult to differentiate without close study of dissected specimens. As with nearly all my pictures, these were photographed alive.

Cypris
Cypris

Projectina Microscope
Objective: 10x macro
Ocular: Wild x10 photo
Substage condenser with top lens removed
DG wheelstop
Sample from DP1 Warnham 19-Feb-2004

Here is a link to a video (.AVI) file of Cypris (1.14MB) This is a chase around the slide, and isn't great quality, but I think is quite fun!

Cypris

Cypris

Zeiss GFL Microscope
Objective: Zeiss x10 plan
Ocular: Watson x8 Compensating
Rheinberg illumination
Sample from wetland under boardwalk at Warnham Millpond 07 November 2004
Camera: Canon Powershot S50
ISO 50, F8.0, 1/1500 sec
Combination of 7 images (CombineZ)

Ostracoda in Near IR

Microscope: Zeiss Standard GFL
Ocular: Olympus P15
Objective: Zeiss Plan x1.6 - 5
Illumination: 940 nm IR LED
Camera: Aiptek 3 Mega Cam modified by removal of the internal UV/IR filter
Sample from Warnham Nature Reserve 15 Jan 2006

Using near-IR was a attempt to see through the shell of the Ostracod. It seems partially successful.

And here is a specimen found with the shell partly removed, revealing the interior:

Microscope: Zeiss standard GFL
Ocular: Zeiss Kpl W10x/18
Objective: Leitz NPL Fluotar x15 ICT
Substage: Leitz ICT
Stack of ~35 images/Helicon Focus
Sample from Basingstoke Canal

 

 

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