Water flea

Images made through a microscope. All subject types.

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Olympusman
Posts: 4890
Joined: Sun Jan 15, 2012 12:31 pm

Water flea

Post by Olympusman »

Image
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Clado
Posts: 98
Joined: Mon Feb 13, 2012 12:07 pm
Location: The Netherlands

Post by Clado »

Hello Olympusman,

Nice picture.
This water flea is Picripleuroxus denticulatus. Came from North America to Europe last century.

Olympusman
Posts: 4890
Joined: Sun Jan 15, 2012 12:31 pm

Water flea

Post by Olympusman »

Clado,
Thanks for the ID. What is your resource for identifying water fleas?
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

Clado
Posts: 98
Joined: Mon Feb 13, 2012 12:07 pm
Location: The Netherlands

Post by Clado »

My main resource is a German book:
Die Haplopoda und Cladocera (ohne Bosminidae) Mitteleuropas.
Von Dietrich Flößner.
ISBN 90-5782-057-9
2000 Backhuys Publishers, Leiden, The Netherlands.

Olympusman
Posts: 4890
Joined: Sun Jan 15, 2012 12:31 pm

References

Post by Olympusman »

Danke,
I'm afraid my limited German that got me around Hamburg for a business meeting a few years ago couldn't handle a scientific text.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

75RR
Posts: 714
Joined: Thu May 22, 2014 12:38 pm
Location: Estepona

Post by 75RR »

Hi Olympusman,
Is this done with your new 60x objective?
The resolution is very good.

Olympusman
Posts: 4890
Joined: Sun Jan 15, 2012 12:31 pm

Resolution

Post by Olympusman »

The new 60x objective is unusable. It is marked for a 0.17 cover slip thickness, but it cannot even clear that thickness. I may try it with a 0.11 cover slip which is not practical for my techniques or test it on a blood smear.
What has changed is that I was going through some various eyepieces I had and found one marked Ph 2.5 bit when I tested it before it was not parfocal with my eyepieces. Out of curiosity I set up the micrometer slide and slowly raised the eyepiece up and got parfocality and very good image quality. So I used black electrical tape to lock it into position and have been very happy with it.
Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA

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