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Licmophora sp. (revised id: Climacosphenia moniligera)
Posted: Thu Aug 08, 2019 6:18 pm
by 75RR
Plan 40x/0.65, DIC, all three are around 280µm, stacked and stitched in Photoshop, Marine sample, Alboran Sea.
Note: images are of Girdle (top) and Valve view (bottom)
Re: Licmophora sp. (more)
Posted: Thu Aug 08, 2019 7:43 pm
by Sauerkraut
Truly amazing. Thanks for sharing.
Your images look much nicer than the ones online too.
Re: Licmophora sp. (more)
Posted: Thu Aug 08, 2019 8:02 pm
by MicroBob
Hi Glen,
great images, and thank you for the explanation! Often diatoms are to be found in one position in a slide, a couple in the sideways orientation and very few in between this makes it difficult to get a proper idea of the shape of the diatom.
Bob
Re: Licmophora sp. (more)
Posted: Thu Aug 08, 2019 9:14 pm
by Hobbyst46
Superb! an image of a live valve view must be rare.
Re: Licmophora sp. (more)
Posted: Fri Aug 09, 2019 5:13 am
by 75RR
Many thanks Sauerkraut, MicroBob and Hobbyst46
I had spent some time trying to identify the second image without any luck before coming across that diagram while looking for a species ID on the first image!
I suppose it should have occurred to me given that both appeared on the same sample slide and were in many cases the same length. :)
Re: Licmophora sp. (more)
Posted: Fri Aug 09, 2019 5:13 pm
by Wes
Excellent photos!
Any idea what the round green-brown structures are? Chloroplasts, storage granules?
Re: Licmophora sp. (more)
Posted: Fri Aug 09, 2019 6:38 pm
by 75RR
Thanks Wes
Any idea what the round green-brown structures are? Chloroplasts, storage granules?
They would seem to be chloroplasts
https://www.researchgate.net/publicatio ... a_SE_Spain
Re: Licmophora sp. (more)
Posted: Sat Aug 10, 2019 1:05 am
by KurtM
I suppose it should have occurred to me...
Now there's a great big lurking "gotcha" in diatom study right there: keeping on your toes for the valve view vs. girdle view thing. If I had a dollar for every time I've been bamboozled by that one I could buy a new bottle of Pleurax.
Re: Licmophora sp. (more)
Posted: Sat Aug 10, 2019 5:25 am
by 75RR
Now there's a great big lurking "gotcha" in diatom study right there: keeping on your toes for the valve view vs. girdle view thing. If I had a dollar for every time I've been bamboozled by that one I could buy a new bottle of Pleurax. 8-)
In my defense there were a variety of diatoms on the sample slide ... still a rookie mistake though!
Re: Licmophora sp. (more)
Posted: Sat Aug 10, 2019 2:19 pm
by Francisco
Nice pictures and pretty diatoms
Re: Licmophora sp. (more)
Posted: Sat Aug 10, 2019 2:23 pm
by 75RR
Thank you Francisco
perhaps you can venture an opinion on its ID, see this link:
viewtopic.php?f=13&t=7851
Re: Licmophora sp. (more)
Posted: Sun Aug 11, 2019 2:23 pm
by Francisco
My knowledge about diatoms is scarce. I'm sorry I can't help you
Re: Licmophora sp. (more)
Posted: Sun Aug 11, 2019 3:13 pm
by Hobbyst46
If it were possible to catch a small mass of such diatoms, and perform cleaning that preserves the valve, then at least the no of stria per 10um could be verified even with optical microscopy. This might help the ID. I have seen stalks of Limophoras on Ulva leaves, at my side of the Sea.