Prorocentrum hoffmannianum, 100x (slow motion)

[Topcode]

So, I am fairly certain I have finally nailed down what species of prorocentrum is living in my seawater samples, and it seems to be Prorocentrum hoffmannianum.

I was able to get a good view of its pores with my 100x objective, which seem to strongly match with images of this species, particularly this amazing SEM image.


In both, the pores are spaced out similarly, and the darker pores show up at relatively the same frequency in both. My resolution obviously isn't as good as a SEM, but its good enough to show that they match up really well, in shape, pore sizes, shape and distribution, and basically everything else that I can tell.

Well, now that we know what we are looking at, lets look at this thing.

this is the first slow motion ive really done at 100x, its binned 3x, ~1350fps, played back at 25.

different one here, also 100x but binned 2x, ~1450fps, also played back 25

Welp, that's all for today

[Chas]

Really nice videos I have been confused by there being two distinct mechanisms for 'powering' flagella; one for prokaryotes and another for eukaryotes,
Eukayotes: https://www.youtube.com/watch?v=9nZYlyFGm50
Prokaryotes: https://www.youtube.com/watch?v=L-vprX2kpds about 3 1/2 minutes in

Via a very strange and random route I came across an early pioneer of high speed photography; a school teacher (Ashley Gordon Lowndes) who taught amongst others J.Z.Young. Here is one of his articles:

https://sci-hub.st/https://doi.org/10.1038/1351006a0

[MichaelG.]

Excellent work, Topcode

… I’ve hoped for a long time [and thus-far failed] to to capture motion like this.

MichaelG.
.
@Chas … many thanks for sharing that 1935 article from Nature !