Baby Oedogonium

[tlansing]

Today I found a number of new Oedogonium which had germinated from zoospores. These baby Oedogonium have a holdfast at one end of the filament to attach to some kind of substrate. I show a couple of photos I took to illustrate a few of the baby Oedogonium that I obeserved.
Zeiss Protomicroscope III, 40x Neofluar objective, optovar 1.25x, flash. Camera is a Canon 1300D

IMG_0005-1.JPG (73.15 KiB) Viewed 695 times

IMG_0006-1.jpg (66.02 KiB) Viewed 695 times

IMG_0008-1.JPG (65.67 KiB) Viewed 695 times

[Wes]

Hi Tim,
Great images, occasionally I also stumble upon newly hatched Oedogonium tethered to the coverslip via the holdfast structure. Have you observed the motile zoospore stage?

Also I find it interesting that you achieve such high magnification with the 40x neofluar. What % of the F.O.V. do you cover with your current photo adaptation?

[tlansing]

Hi Wes,

Thanks for your comment on the pictures! I have not knowingly seen a motile zoospore but your question made me wonder if one of the swimming green things I have seen might be a zoospore rather than some kind of euglenoid that I assumed it was. I will need to carefully examine the collections that have many of these newly sprouted Oedogonium to see if I can find one.

With respect to your question about the % of the field of view that I cover with my current setup, it is about 50%. The width of the field observed through the eyepiece (12.5x eyepiece, optovar 1.25x) is about 380 um and the view on the camera sensor is about 200 um.

Tim