Licmophora sp. (more)

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75RR
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Licmophora sp. (more)

#1 Post by 75RR » Thu Aug 08, 2019 6:18 pm

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)

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Licmophora(1).jpg
Licmophora(1).jpg (221.58 KiB) Viewed 1038 times
Licmophora(2).jpg
Licmophora(2).jpg (141.99 KiB) Viewed 1038 times
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Sauerkraut
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Re: Licmophora sp. (more)

#2 Post by Sauerkraut » Thu Aug 08, 2019 7:43 pm

Truly amazing. Thanks for sharing.

Your images look much nicer than the ones online too.

MicroBob
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Re: Licmophora sp. (more)

#3 Post by MicroBob » Thu Aug 08, 2019 8:02 pm

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

Hobbyst46
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Re: Licmophora sp. (more)

#4 Post by Hobbyst46 » Thu Aug 08, 2019 9:14 pm

Superb! an image of a live valve view must be rare.
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75RR
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Re: Licmophora sp. (more)

#5 Post by 75RR » Fri Aug 09, 2019 5:13 am

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. :)
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Wes
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Re: Licmophora sp. (more)

#6 Post by Wes » Fri Aug 09, 2019 5:13 pm

Excellent photos!

Any idea what the round green-brown structures are? Chloroplasts, storage granules?

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75RR
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Re: Licmophora sp. (more)

#7 Post by 75RR » Fri Aug 09, 2019 6:38 pm

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
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Re: Licmophora sp. (more)

#8 Post by KurtM » Sat Aug 10, 2019 1:05 am

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. 8-)
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75RR
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Re: Licmophora sp. (more)

#9 Post by 75RR » Sat Aug 10, 2019 5:25 am

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!
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Francisco
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Re: Licmophora sp. (more)

#10 Post by Francisco » Sat Aug 10, 2019 2:19 pm

Nice pictures and pretty diatoms

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Re: Licmophora sp. (more)

#11 Post by 75RR » Sat Aug 10, 2019 2:23 pm

Thank you Francisco

perhaps you can venture an opinion on its ID, see this link:

viewtopic.php?f=13&t=7851
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Francisco
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Re: Licmophora sp. (more)

#12 Post by Francisco » Sun Aug 11, 2019 2:23 pm

75RR wrote:Thank you Francisco

perhaps you can venture an opinion on its ID, see this link:

viewtopic.php?f=13&t=7851
My knowledge about diatoms is scarce. I'm sorry I can't help you

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Re: Licmophora sp. (more)

#13 Post by Hobbyst46 » Sun Aug 11, 2019 3:13 pm

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.
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