Unknown marine eggs

Images made through a microscope. All subject types.

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Charles Krebs
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Unknown marine eggs

Post by Charles Krebs »

Finally got around to dragging the plankton net again. Nowhere near as much plankton as I get in the late spring and summer (water temp is only about 45 degree F this time of year... increasing to a "sizzling" 56 or so in summer). I did find a fair number of these eggs (at least I think that is what they are), but no idea what they are from. I thought Franz had posted something like this a while back but I could not find it.

Typically there were 3 or 5 eggs in each circular mass. In a profile (side view) each egg mass was shaped sort of like a derby hat (or UFO :wink:) Each individual egg was just about 150 micron in diameter.

Image

Image

Jacek
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Post by Jacek »

Great photos, wow !

arturoag75
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Post by arturoag75 »

hi Charlie,
first is really incredible! :lol:
what objective did you used for it?
best
arturo

Charles Krebs
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Post by Charles Krebs »

Arturo,

The first is the Olympus 10/0.40 S Plan Apo. (The second is the 40/0.95).

RogelioMoreno
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Post by RogelioMoreno »

Charles,

Wow, very nice!

Did you remember at what flash power you did shoot with the 40x?

Rogelio

Jean-marc
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Post by Jean-marc »

Hi,

Incredible detail on the first one !

Best regards

JM

Charles Krebs
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Post by Charles Krebs »

Thanks all!

Rogelio..
Did you remember at what flash power you did shoot with the 40x?
These were actually shot with continuous light, but with the 40X I will typically be about 2 stops under full power (DIC). With the 60X and 100X I'm at full or maybe -1 stop (with DIC lighting).

Wim van Egmond
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Post by Wim van Egmond »

Nice! It could be the egg of Littorina. It's a flat disk. isn't it?

Wim

Charles Krebs
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Post by Charles Krebs »

I do believe you have it Wim. Flat on one side with a shallow "dome" on the other... as in Fig. 7, 8. Thanks!

Image
from:http://sabella.mba.ac.uk/882/01/The_bre ... toides.pdf

Peter De Smidt
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Post by Peter De Smidt »

Super cool photos!

carlos.uruguay
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Post by carlos.uruguay »

Absolutely perfect!

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